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Sample records for acidic potassium permanganate

  1. Acid-permanganate oxidation of potassium tetraphenylboron

    Scoping experiments have been performed which show that potassium tetraphenylboron (KTPB) is rapidly oxidized by permanganate in acidic solutions at room temperature. The main Products are CO2, highly oxidized organic compounds related to tartaric and tartronic acids, boric acid, and potassium phosphate (when phosphoric acid is used as the source of acid). One liter of 0.6M NaMnO4/2.5M H3PO4 solution will destroy up to 8 grams of KTPB. The residual benzene concentration has been measured to be less than the RCRA limit of 0.5 ppm. Approximately 30% of the organic material is released as CO2 (trace CO) and 0.16% as benzene vapor. The reaction is well behaved, no foaming or spattering. Tests were performed from .15M to near 1M permanganate. The phosphoric acid concentration was maintained at a concentration at least three times that of the permanganate since an excess of acid was desired and this is the ratio that these two reagents are consumed in the oxidation

  2. Oxidation kinetics of crystal violet by potassium permanganate in acidic medium

    Khan, Sameera Razi; Ashfaq, Maria; Mubashir; Masood, Summyia

    2016-05-01

    The oxidation kinetics of crystal violet (a triphenylmethane dye) by potassium permanganate was focused in an acidic medium by the spectrophotometric method at 584 nm. The oxidation reaction of crystal violet by potassium permanganate is carried out in an acidic medium at different temperatures ranging within 298-318 K. The kinetic study was carried out to investigate the effect of the concentration, ionic strength and temperature. The reaction followed first order kinetics with respect to potassium permanganate and crystal violet and the overall rate of the reaction was found to be second order. Thermodynamic activation parameters like the activation energy ( E a), enthalpy change (Δ H*), free energy change (Δ G*), and entropy change (Δ S*) have also been evaluated.

  3. The effect of copper sulfate, potassium permanganate, and peracetic acid on Ichthyobodo necator in channel catfish

    Ichthyobodo necator is a single celled biflagellate that can cause significant mortalities in fish, particularly young, tank-reared fish. Copper sulfate (CuSO4), potassium permanganate (KMnO4) and peracetic acid (PAA) were evaluated for effectiveness against Ichthybodosis in juvenile channel catfis...

  4. Advances in the use of acidic potassium permanganate as a chemiluminescence reagent: A review

    Adcock, Jacqui L.; Barnett, Neil W.; Barrow, Colin J.; Francis, Paul S., E-mail: psf@deakin.edu.au

    2014-01-07

    Graphical abstract: -- Highlights: •Analytical applications of acidic potassium permanganate chemiluminescence. •Discussion of emitting species and light-producing reaction pathways. •Influence of enhancers such as polyphosphates, formaldehyde and sulfite. •Clinical, forensic, food science, agricultural and environmental applications. -- Abstract: We review the analytical applications of acidic potassium permanganate chemiluminescence published since our previous comprehensive review in mid-2007 to early 2013. This includes a critical evaluation of evidence for the emitting species, the influence of additives such as polyphosphates, formaldehyde, sulfite, thiosulfate, lanthanide complexes and nanoparticles, the development of a generalized reaction mechanism, and the use of this chemistry in pharmaceutical, clinical, forensic, food science, agricultural and environmental applications.

  5. Investigation on surface structure of potassium permanganate/nitric acid treated poly(tetrafluoroethylene)

    Fu, Congli; Liu, Shuling; Gong, Tianlong; Gu, Aiqun; Yu, Zili

    2014-10-01

    In the previous articles concerning the treatment of poly(tetrafluoroethylene) (PTFE) with potassium permanganate/nitric acid mixture, the conversion of a hydrophobic to a hydrophilic surface was partially assigned to the defluorination of PTFE and then the introduction of carbonyl and hydroxyl groups into the defluorinated sites. In the present work, PTFE sheets were treated with potassium permanganate/nitric acid, and the surfaces before and after treatment were comparatively characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The surface sediments of the treated PTFE were also determined by atomic absorption spectroscopy (AAS). The results indicate that the conversion of the hydrophobicity to the hydrophilicity on the modified PTFE surface is mainly due to the deposition of hydrophilic manganese oxides which covered the fluorocarbon surface, and no detectable chemical reactions of PTFE occur in the treating process.

  6. Investigation of the Influence of Potassium Permanganate on Denim Jeans Processing During Acid Wash

    Elias Khalil

    2015-01-01

    Denim Jeans finishing is one of the most important value added activities in the washing plant to meet buyer requirements. It is done by creating numerous effects on it. Potassium Permanganate (PP) is a strong oxidizing agent used to make vintage look with acid stone wash. This present investigation deals with the simultaneous effect of processing time and concentration of PP on the physical and mechanical properties of denim garments. Three 100% cotton denim jeans were separately treated wit...

  7. Oxidative Precipitation of Manganese from Acid Mine Drainage by Potassium Permanganate

    Regeane M. Freitas; Perilli, Thomaz A. G.; Ladeira, Ana Claudia Q.

    2013-01-01

    Although oxidative precipitation by potassium permanganate is a widely recognised process for manganese removal, research dealing with highly contaminated acid mine drainage (AMD) has yet to be performed. The present study investigated the efficiency of KMnO4 in removing manganese from AMD effluents. Samples of AMD that originated from inactive uranium mine in Brazil were chemically characterised and treated by KMnO4 at pH 3.0, 5.0, and 7.0. Analyses by Raman spectroscopy and geochemical mode...

  8. A Neat Trick Using Oxalic Acid Dihydrate and Potassium Permanganate and Other Experiments with Small Organic Amine or Oxygenated Compounds

    Kelland, Malcolm A.

    2011-01-01

    Solid potassium permanganate (KMnO[subscript 4]) is shown to react in a variety of ways with small organic amines or oxygenated compounds depending on whether they are liquids or solids and whether water is present. In particular, its reaction with solid oxalic acid dihydrate can be initiated by the moisture in one's breath, making an intriguing…

  9. 75 FR 51112 - Potassium Permanganate From China

    2010-08-18

    ... COMMISSION Potassium Permanganate From China AGENCY: United States International Trade Commission. ACTION: Scheduling of an expedited five-year review concerning the antidumping duty order on potassium permanganate... whether revocation of the antidumping duty order on potassium permanganate from China would be likely...

  10. Investigation on surface structure of potassium permanganate/nitric acid treated poly(tetrafluoroethylene)

    Highlights: • A new transformation (conversion) mechanism of PTFE surface from a hydrophobicity to a hydrophilicity was proposed through the treatment of KMnO4/HNO3. • Chemical reactions or defluorination of PTFE described in the reported paper was testified to be a misconceived conclusion by the combination of several testing measurements (IR, XPS, XRD and so on) in our present work. • Deposition of manganese oxide and/or manganese hydroxide on PTFE surface contributed to the hydrophilic property of the modified PTFE with KMnO4/HNO3 treated. • The deposition thickness on the modified PTFE surface was about 5 μm, which was significantly helpful in enhancing the adhesive strength of PTFE with other materials. - Abstract: In the previous articles concerning the treatment of poly(tetrafluoroethylene) (PTFE) with potassium permanganate/nitric acid mixture, the conversion of a hydrophobic to a hydrophilic surface was partially assigned to the defluorination of PTFE and then the introduction of carbonyl and hydroxyl groups into the defluorinated sites. In the present work, PTFE sheets were treated with potassium permanganate/nitric acid, and the surfaces before and after treatment were comparatively characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The surface sediments of the treated PTFE were also determined by atomic absorption spectroscopy (AAS). The results indicate that the conversion of the hydrophobicity to the hydrophilicity on the modified PTFE surface is mainly due to the deposition of hydrophilic manganese oxides which covered the fluorocarbon surface, and no detectable chemical reactions of PTFE occur in the treating process

  11. Investigation on surface structure of potassium permanganate/nitric acid treated poly(tetrafluoroethylene)

    Fu, Congli; Liu, Shuling; Gong, Tianlong; Gu, Aiqun; Yu, Zili, E-mail: ziliyu@scu.edu.cn

    2014-10-30

    Highlights: • A new transformation (conversion) mechanism of PTFE surface from a hydrophobicity to a hydrophilicity was proposed through the treatment of KMnO{sub 4}/HNO{sub 3}. • Chemical reactions or defluorination of PTFE described in the reported paper was testified to be a misconceived conclusion by the combination of several testing measurements (IR, XPS, XRD and so on) in our present work. • Deposition of manganese oxide and/or manganese hydroxide on PTFE surface contributed to the hydrophilic property of the modified PTFE with KMnO{sub 4}/HNO{sub 3} treated. • The deposition thickness on the modified PTFE surface was about 5 μm, which was significantly helpful in enhancing the adhesive strength of PTFE with other materials. - Abstract: In the previous articles concerning the treatment of poly(tetrafluoroethylene) (PTFE) with potassium permanganate/nitric acid mixture, the conversion of a hydrophobic to a hydrophilic surface was partially assigned to the defluorination of PTFE and then the introduction of carbonyl and hydroxyl groups into the defluorinated sites. In the present work, PTFE sheets were treated with potassium permanganate/nitric acid, and the surfaces before and after treatment were comparatively characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The surface sediments of the treated PTFE were also determined by atomic absorption spectroscopy (AAS). The results indicate that the conversion of the hydrophobicity to the hydrophilicity on the modified PTFE surface is mainly due to the deposition of hydrophilic manganese oxides which covered the fluorocarbon surface, and no detectable chemical reactions of PTFE occur in the treating process.

  12. Status of potassium permanganate - 2008

    This is a brief overview of the Technical Sections completed and being worked on for the New Animal Drug Application (NADA) for potassium permanganate will be presented. Initial Label Claim (Columnaris on catfish/HSB): 1) Human Food Safety - Complete for all fin fish (June 1999). A hazard charac...

  13. 75 FR 23298 - Potassium Permanganate From China

    2010-05-03

    ... potassium permanganate from China (70 FR 35630). The Commission is now conducting a third review to... permanganate from China (64 FR 66166). Following second five-year reviews by Commerce and the Commission... COMMISSION Potassium Permanganate From China AGENCY: United States International Trade Commission....

  14. Acidic Potassium Permanganate Chemiluminescence for the Determination of Antioxidant Potential in Three Cultivars of Ocimum basilicum.

    Srivastava, Shivani; Adholeya, Alok; Conlan, Xavier A; Cahill, David M

    2016-03-01

    Ocimum basilicum, a member of the family Lamiaceae, is a rich source of polyphenolics that have antioxidant properties. The present study describes the development and application of an online HPLC-coupled acidic potassium permanganate chemiluminescence assay for the qualitative and quantitative assessment of antioxidants in three cultivars of O. basilicum grown under greenhouse conditions. The chemiluminescence based assay was found to be a sensitive and efficient method for assessment of total and individual compound antioxidant potential. Leaves, flowers and roots were found to be rich reserves of the antioxidant compounds which showed intense chemiluminescence signals. The polyphenolics such as rosmarinic, chicoric, caffeic, p-coumaric, m-coumaric and ferulic acids showed antioxidant activity. Further, rosmarinic acid was found to be the major antioxidant component in water-ethanol extracts. The highest levels of rosmarinic acid was found in the leaves and roots of cultivars "holy green" (14.37; 11.52 mM/100 g DW respectively) followed by "red rubin" (10.02; 10.75 mM/100 g DW respectively) and "subja" (6.59; 4.97 mM/100 g DW respectively). The sensitivity, efficiency and ease of use of the chemiluminescence based assay should now be considered for its use as a primary method for the identification and quantification of antioxidants in plant extracts. PMID:26803763

  15. Determination of catecholamines by ion chromatography coupled to acidic potassium permanganate chemiluminescence detection

    Hong Wei Wu; Mei Lan Chen; Dan Shou; Yan Zhu

    2012-01-01

    A simple,fast,sensitive,highly selective and eco-friendly analytical method for the determination of catecholamines in human urine by ion chromatography (IC) with chemiluminescence (CL) detection was described in this paper.Using 12 mmoi/L H2SO4 without any organic additive as eluent,three catecholamines including epinephrine (EP),norepinephrine (NE) and dopamine (DA)were well separated on a cation-exchange column.The CL detection was based on the reaction of analytes with acidic potassium permanganate in the presence of formaldehyde as an enhancer.The absence of methanol and acetonitrile in eluent made the proposed method more sensitive and eco-friendly.Under the optimal conditions,the linear range of the proposed method was in the range of 0.02-0.5 μg/mL.The limit of detection (LOD) was in the range of 0.6 and 5.1 μg/L.The relative standard deviations (RSD) for 0.1 μg/mL mixed standard solution were in the range of 0.8-1.9% (n =11).The method has been applied to the determination of catecholamines in human urine successfully.Excellent spiked recoveries were achieved for catecholamines ranged from 91.2% to 112.7%.

  16. Oxidative Precipitation of Manganese from Acid Mine Drainage by Potassium Permanganate

    Regeane M. Freitas

    2013-01-01

    Full Text Available Although oxidative precipitation by potassium permanganate is a widely recognised process for manganese removal, research dealing with highly contaminated acid mine drainage (AMD has yet to be performed. The present study investigated the efficiency of KMnO4 in removing manganese from AMD effluents. Samples of AMD that originated from inactive uranium mine in Brazil were chemically characterised and treated by KMnO4 at pH 3.0, 5.0, and 7.0. Analyses by Raman spectroscopy and geochemical modelling using PHREEQC code were employed to assess solid phases. Results indicated that the manganese was rapidly oxidised by KMnO4 in a process enhanced at higher pH. The greatest removal, that is, 99%, occurred at pH 7.0, when treated waters presented manganese levels as low as 1.0 mg/L, the limit established by the Brazilian legislation. Birnessite (MnO2, hausmannite (Mn3O4, and manganite (MnOOH were detected by Raman spectroscopy. These phases were consistently identified by the geochemical model, which also predicted phases containing iron, uranium, manganese, and aluminium during the correction of the pH as well as bixbyite (Mn2O3, nsutite (MnO2, pyrolusite (MnO2, and fluorite (CaF2 following the KMnO4 addition.

  17. Status of potassium permanganate label claim - 2007

    A brief overview of the Technical Sections completed and being worked on for the New Animal Drug Application (NADA) for potassium permanganate will be presented. Various aspects of these technical sections will be open for discussion. Potassium Permanganate Initial Label Claim (Columnaris on cat...

  18. Suicidal Ingestion of Potassium Permanganate Crystals: A Rare Encounter

    Karthik, Ravikanti; Veerendranath, Hari Prasad Kanakapura; Wali, Siddraj; Mohan, Murali N T; Kumar, Praveen A. C.; Trimurty, Gaganam

    2014-01-01

    Potassium permanganate poisoning is not common. Although Symptoms of potassium permanganate ingestion are gastrointestinal and Complications due to ingestion of potassium permanganate include cardiovascular depression, hepatic and renal damage, upper airway obstruction, bleeding tendency and methemoglobinemia. Gastric damage due to potassium permanganate has rarely been reported previously. We are reporting a 34-year old female patient who presented to our Emergency Department after suicidal ...

  19. Characterization of tropical starches modified with potassium permanganate and lactic acid

    Fabiano Franco Takizawa

    2004-11-01

    Full Text Available In the present work some tropical starches were modified by an oxidative chemical treatment with potassium permanganate and lactic acid. The native and modified samples were evaluated by mid-infrared spectroscopy, differential dyeing, pH, expansion power, solubility and swelling power, clarity of the pastes, susceptibility to syneresis, carboxyl content and reducing power. All modified samples presented dark blue color, higher expansion power (except corn starch, carboxyl content and reducing power. The solubility of the modified starch granules was very high at 90ºC. At this temperature, it was not possible to measure their swelling power. The viscographic analysis showed decrease in peak viscosity and higher degree of cooking instability. The principal component analysis of the mid-infrared spectra allowed separation between native and modified samples due to the presence of carboxyl groups. The expansion was inversely related with amylose content of the starches.No presente trabalho alguns amidos tropicais foram modificados por tratamento oxidativo com permanganato de potássio e ácido lático. Amidos nativos e modificados foram avaliadas por espectroscopia na região do infravermelho médio, coloração diferencial, pH, propriedade de expansão, poder de inchamento e solubilidade, claridade das pastas, susceptibilidade a sinérese, teor carboxilas e poder redutor. Todas as amostras modificadas adquiriram intensa coloração azul quando suspensas em azul de metileno, maiores valores de expansão (exceto o amido de milho, teor de carboxilas e poder redutor. A solubilidade dos grânulos dos amidos modificados foi muito alta a temperatura de 90°C, não tendo sido possível medir o poder de inchamento. A análise viscográfica mostrou um decréscimo no pico de viscosidade e alta instabilidade ao cozimento. A análise dos componentes principais dos espectros de infravermelho médio permitiu a separação entre as amostras nativas e modificadas

  20. Potassium permanganate ingestion as a suicide attempt

    Tuba Cimilli Ozturk; Ozlem Guneysel; Onur Yesil; Sebnem Eren Cevik

    2012-01-01

    Potassium permanganate is a highly corrosive, water-soluble oxidizing antiseptic. A 68- year-old female patient was admitted to our Emergency Department after ingestion of 3 tablets of 250 mg potassium permanganate as a suicide attempt. The physical exam revealed brown stained lesions in the oropharynx. Emergency endoscopy was performed by the gastroenterologist after the third hour of ingestion. Emergency endoscopy revealed multiple superficial (Grade I-II) lesions on the esophagus and cardi...

  1. Potassium Permanganate Poisoning: A Nonfatal Outcome

    Eteiwi, Suzan M.; Al-Eyadah, Abdallah A.; Al-Sarihin, Khaldon K.; Ahmad A. Al-Omari; Rania A. Al-Asaad; Haddad, Fares H.

    2015-01-01

    Acute poisoning by potassium permanganate is a rare condition with high morbidity and mortality. Diagnosis of the condition relies on a history of exposure or ingestion and a high degree of clinical suspicion. Oxygen desaturation and the presence of methemoglobin are also helpful indicators. Since no specific antidote is available, treatment is mainly supportive. Few cases have been reported in the literature following potassium permanganate ingestion, whether intentional or accidental, and m...

  2. Wet carbon-based solid acid/potassium permanganate as an efficient heterogeneous reagents for oxidation of alcohols under mild conditions

    Arash Shokrolahi; Abbas Zali; Mohammad Hossein Kes

    2008-01-01

    Wet carbon-based solid acid and potassium permanganate were used as new reagents for oxidation of alcohols to their corresponding aldehydes and ketones in heterogeneous mixtures.The experiments were done moderately at mild condition and high yields in suitable times were obtained.

  3. Effectiveness of copper sulfate, potassium permanganate, and peracetic acid to reduce mortality and infestation of Ichthyobodo nector in channel catfish Ictalurus punctatus (Rafinesque 1818)

    Ichthyobodo necator is a single celled bi-flagellate parasite, and in high density can causes significant mortality in young fish. Copper sulfate (CuSO4), potassium permanganate (KMnO4) and peracetic acid (PAA) were evaluated for effectiveness against ichthyobodosis. Treatments were: untreated con...

  4. Potassium permanganate ingestion as a suicide attempt

    Tuba Cimilli Ozturk

    2012-01-01

    Full Text Available Potassium permanganate is a highly corrosive, water-soluble oxidizing antiseptic. A 68- year-old female patient was admitted to our Emergency Department after ingestion of 3 tablets of 250 mg potassium permanganate as a suicide attempt. The physical exam revealed brown stained lesions in the oropharynx. Emergency endoscopy was performed by the gastroenterologist after the third hour of ingestion. Emergency endoscopy revealed multiple superficial (Grade I-II lesions on the esophagus and cardia, which were considered secondary to the caustic substance. The mainstay in the treatment of potassium permanganate is supportive and the immediate priority is to secure the airway. Emergency endoscopy is an important tool used to evaluate the location and severity of injury to the esophagus, stomach and duodenum after caustic ingestion. Patients with signs and symptoms of intentional ingestion should undergo endoscopy within 12 to 24 h to define the extent of the disease.

  5. Potassium Permanganate Poisoning: A Nonfatal Outcome.

    Eteiwi, Suzan M; Al-Eyadah, Abdallah A; Al-Sarihin, Khaldon K; Al-Omari, Ahmad A; Al-Asaad, Rania A; Haddad, Fares H

    2015-07-01

    Acute poisoning by potassium permanganate is a rare condition with high morbidity and mortality. Diagnosis of the condition relies on a history of exposure or ingestion and a high degree of clinical suspicion. Oxygen desaturation and the presence of methemoglobin are also helpful indicators. Since no specific antidote is available, treatment is mainly supportive. Few cases have been reported in the literature following potassium permanganate ingestion, whether intentional or accidental, and most of the patients in these cases had unfavorable outcomes, which was not the case in our patient. Our patient, a 73-year-old male, purchased potassium permanganate over the counter mistaking it for magnesium salt, which he frequently used as a laxative. Several hours after he ingested it, he was admitted to the endocrine department at King Hussein Medical Center, Jordan, with acute rapidly evolving shortness of breath. During hospitalization, his liver function tests deteriorated. Since he was diagnosed early and managed promptly he had a favorable outcome. PMID:26366264

  6. Flow-injection chemiluminescence determination of tryptophan using galangin-potassium permanganate-polyphosphoric acid system

    Hui Chen; Li Li; Min Zhou; Yong Jun Ma

    2008-01-01

    A high sensitive flow-injection chemiluminescence (FI-CL)method for the determination of tryptephan has been developed.The method is based on the chemiluminescence reaction of galangin-potassium perrnanganate-tryptophan in polyphosphoric acid (PPA)media.Under the optimized conditions,tryptophan was determined in the range 0.05-10 μg/mL with the detection limit (30)of 5.0× 10-3 μg/mL.The relative standard deviation (RSD)was 1.0% for 11 replicate determinations of 1.0 μg/mL tryptophan.Three synthetic samples were determined selectively with recoveries in the range from 99.6% to 102.0% in the presence of other amino acids.

  7. A novel system of galangin-potassium permanganate-polyphosphoric acid for the determination of tryptophan and its chemiluminescence mechanism.

    Li, Li; Guo, Ruibin; Zhang, Dongxia; Du, Xinzhen

    2015-08-01

    A novel galangin-potassium permanganate (KMnO4)-polyphosphoric acid (PPA) system was found to have an outstanding response to tryptophan (Trp). Trp determination using this KMnO4 -PPA system was enhanced significantly in the presence of galangin. A highly sensitive flow-injection chemiluminescence (CL) method to determine Trp was developed based on the CL reaction of galangin-KMnO4 -Trp in PPA media. The presence of galangin, a member of the flavonol class of flavonoid complexes, greatly increased the luminous intensity of Trp in KMnO4 -PPA systems. Under optimized conditions, Trp was determined in the 0.05-10 µg/mL range, with a detection limit (3σ) of 5.0 × 10(-3)  µg/mL. The relative standard deviation (RSD) was 1.0% for 11 replicate determinations of 1.0 µg/mL Trp. Two synthetic samples were determined selectively with recoveries of 98.4-100.1% in the presence of other amino acids. The possible mechanism is summarized as follows: excited states of Mn(II)(*) and Mn(III(*) types are the main means of generating chemical luminescent species, and Trp concentration and luminescence intensity have a linear relationship, which enables quantitative analysis. PMID:25271024

  8. Visible Spectrophotometric determination of Chlorpheniramine maleate and Diphenhydramine hydrochloride in raw and dosage form using Potassium permanganate

    Mohammed Al Bratty

    2016-01-01

    Two simple, rapid and sensitive spectrophotometric methods developed for Chlorpheniramine Maleate (CPM) and Diphenhydramine Hydrochloride (DPH) determination in pure and pharmaceutical preparation using Potassium Permanganate. The solvent system used was potassium permanganate. The method developed by adding a known amount of permanganate to CPM and DPH in acid and alkaline medium, the unreacted permanganate was determined at 550 nm; method A and bluish green colour of Manganate at 610 nm; me...

  9. Potassium Permanganate Poisoning: A Nonfatal Outcome

    Suzan M. Eteiwi

    2015-07-01

    Full Text Available Acute poisoning by potassium permanganate is a rare condition with high morbidity and mortality. Diagnosis of the condition relies on a history of exposure or ingestion and a high degree of clinical suspicion. Oxygen desaturation and the presence of methemoglobin are also helpful indicators. Since no specific antidote is available, treatment is mainly supportive. Few cases have been reported in the literature following potassium permanganate ingestion, whether intentional or accidental, and most of the patients in these cases had unfavorable outcomes, which was not the case in our patient. Our patient, a 73-year-old male, purchased potassium permanganate over the counter mistaking it for magnesium salt, which he frequently used as a laxative. Several hours after he ingested it, he was admitted to the endocrine department at King Hussein Medical Center, Jordan, with acute rapidly evolving shortness of breath. During hospitalization, his liver function tests deteriorated. Since he was diagnosed early and managed promptly he had a favorable outcome.

  10. 75 FR 65448 - Potassium Permanganate From the People's Republic of China: Continuation of Antidumping Duty Order

    2010-10-25

    ... reasonably foreseeable future. See Potassium Permanganate From China Determination, 75 FR 63856 (October 18... International Trade Administration Potassium Permanganate From the People's Republic of China: Continuation of... the antidumping duty order on potassium permanganate from the People's Republic of China...

  11. Hg (II) Catalysed Oxidation of D-Arabinose and D-Mannose by Acidic Solution of Potassium Permanganate: Kinetics and Mechanism

    R. Naz; *R. Azmat; Qamar, N; 3N. I. Siddiqi

    2014-01-01

    The kinetics of Hg (II) catalyzed oxidation of D-Arabinose (Ara) and D-Mannose (Man) by potassium permanganate in acidic medium have been studied spectrophotometrically in the temperature range 30-50oC. The reactions exhibit first order kinetics with respect to [Man] and [MnO4-] while second order with [Ara]. The reaction rates were found to be unaffected by the change in [H+]. It has been observed that Hg (II) catalyzed the reaction but as the [Hg(II)] increases, reaction rate becomes indepe...

  12. Oxidation of As(Ⅲ) by potassium permanganate

    Li Na; Fan Maohong; Van Leeuwen Johannes; Saha Basudeb; YANG Hongqun; HUANG C.P.

    2007-01-01

    The oxidation of As(Ⅲ) with potassium permanganate was studied under conditions including pH, initial As(Ⅲ) concentration and dosage of Mn(Ⅶ). The results have shown that potassium permanganate was an effective agent for oxidizing of As(Ⅲ) in a wide pH range. The pH value of tested water was not a significant factor affecting the oxidation of As(Ⅲ) by Mn(Ⅶ). Although theoretical redox analyses suggest that Mn(Ⅶ) should have better performance in oxidization of As(Ⅲ) within lower pH ranges, the experimental results show that the oxidation efficiencies of As(Ⅲ) under basic and acidic conditions were similar, which may be due to the adsorption of As(Ⅲ) on the Mn(OH)2 and MnO2 resulting from the oxidation of As(Ⅲ).

  13. Synthesis and characterisation of manganese oxides from potassium permanganate and citric acid mixtures

    Burhanuddin, Syazwani; Yarmo, Ambar; Yamin, Bohari M.

    2013-11-01

    Reaction of KMnO4 and citric acid at different stoichiometric ratio found to give black precipitate after calcined at 500 %C. The black precipitate are classified as two type of manganese oxides mineral namely as bixbyite and hollandite. IR and XRD data were in agreement with the literature report.

  14. 75 FR 63856 - Potassium Permanganate From China Determination

    2010-10-18

    ... COMMISSION Potassium Permanganate From China Determination On the basis of the record \\1\\ developed in the... antidumping duty order on potassium permanganate from China would be likely to lead to continuation or....2(f)). Background The Commission instituted this review on May 3, 2010 (75 FR 23298) and...

  15. Extracting silica from rice husk treated with potassium permanganate

    As an agro-waste material the rice husk is abundantly available is rice growing areas. In many areas rice husk after burning involves disposal problems because of higher quantities of silica present in it. Rice husk contains about 20 per cent silica, which is present in hydrated amorphous form. On thermal treatment the silica converts into crystobalite, which is a crystalline form of silica. However amorphous silica can be produced under controlled conditions ensuring high reactivity and large surface area. Leaching the rice husk with organic acids and alkalies removes the metallic impurities from its surface. How a dilute solution of potassium permanganate affects the rice husk is the subject of this research paper. The rice husk was treated with the dilute solution of potassium permanganate at room temperature and then analyzed by SEM, TGA and the ash by analytical treatment after burning under controlled temperature. The SEM results revealed that the protuberances of the rice husk were eaten away by the solution of potassium permanganate. Pyrolysis of rice husks showed that the thermal degradation of the treated rice husk was faster than the untreated rice husk where as analytical results confirmed the presence of more amorphous silica than untreated rice husk. (author)

  16. Detection of pyrrolizidine alkaloids using flow analysis with both acidic potassium permanganate and tris(2,2'-bipyridyl)ruthenium(II) chemiluminescence

    For the first time, analytically useful chemiluminescence was elicited from the reactions of the pyrrolizidine alkaloids. Heliotrine, retronecine, supinine, monocrotaline and echinatine N-oxide yielded chemiluminescence upon reaction with tris(2,2'-bipyridyl)ruthenium(II) whilst lasiocarpine, its N-oxide and supinine elicited light upon reaction with acidic potassium permanganate. Detection limits for heliotrine were 1.25 x 10-7 M and 9 x 10-9 M for tris(2,2'-bipyridyl)ruthenium(III) perchlorate with flow injection analysis (FIA) and the silica-immobilised reagent (4-[4-(dichloromethylsilanyl)-butyl]-4'-methyl-2,2'-bipyridine)bis (2,2'-bipyridyl)ruthenium(II) with sequential injection analysis (SIA), respectively. Lasiocarpine was detectable at 1.4 x 10-7 M using acidic potassium permanganate with FIA. Additionally, the silica-immobilised reagent was optimised with respect to the oxidant (ammonium ceric nitrate) concentration and the aspiration times which afforded a detection limit for codeine of 5 x 10-10 M using SIA

  17. Shrink-resistance of cashmere yarn with acidic potassium permanganate%山羊绒纱线酸性高锰酸钾防缩工艺

    杨丹; 李龙; 王卫

    2011-01-01

    The shrink-proofing treatment of cashmere yarn was treated with acidic potassium permangament solution. The breaking strength, felt shrinkage percentage and the whiteness of the treated cashmere yams were tested , and the effects of treatment temperature, time, pH value, the content of potassium permanganate and sodium pyrophosphate on all the above properties of the cashmere yarn were analysed. By an orthogonal test and comprehensive analysis, the optimal shrink-resisstance treatment condition was obtained as folio wings: the temperature 40t .potassium permanganate concentration 2% (o. W. F) , sodium pyrophosphate content 3% (o. W. F) , pH value 4, the time 30min.%利用高锰酸钾在酸性条件下的强氧化性对山羊绒纱线进行氧化处理,研究山羊绒纱线防缩工艺.以纱线断裂强力、毡缩率和白度为测试指标,分析温度、时间、高锰酸钾用量、pH值和焦磷酸钠用量等对处理后山羊绒纱线各项性能的影响.通过正交实验确定了山羊绒纱线酸性高锰酸钾防缩处理最佳工艺为:温度40℃,处理时间30min,KMnO4浓度2%(o.w.f),pH值4,焦磷酸钠浓度3%(o.w.f).

  18. Spectrophotometric Determination of Pipazethate HCl and Dextromethorphan HBr using Potassium Permanganate

    Gouda, Ayman Abou El-Fetouh; El-Sheikh, Ragaa; El Shafey, Zeineb.; Hossny, Nagda.; El-Azzazy, Rham

    2008-01-01

    Rapid, simple and sensitive validated spectrophotometric methods have been described for the assay of pipazethate HCl (PiCl) and dextromethorphan HBr (DEX) either in pure form or in pharmaceutical formulations. The proposed methods were based on the oxidation of the studied drugs by a known excess of potassium permanganate in acidic medium and estimating the unreacted permanganate with amaranth dye (method A), acid orange II (method B), indigocarmine (method C) and methylene blue (method D), ...

  19. Flow injection determination of diclofenac sodium based on its sensitizing effect on the chemiluminescent reaction of acidic potassium permanganate-formaldehyde.

    Song, Jingjing; Sun, Pulv; Ji, Zhongling; Li, Jianguo

    2015-02-01

    A sensitive and simple chemiluminescent (CL) method for the determination of diclofenac sodium has been developed by combining the flow injection technique and its sensitizing effect on the weak CL reaction between formaldehyde and acidic potassium permanganate. A calibration curve is constructed for diclofenac sodium under optimized experimental parameters over the range 0.040-5.0 µg/mL and the limit of detection is 0.020 µg/mL (3σ). The inter-assay relative standard deviation for 0.040 µg/mL diclofenac sodium (n = 11) is 2.0%. This method is rapid, sensitive, simple, and shows good selectivity and reproducibility. The proposed method has been successfully applied to the determination of the studied diclofenac sodium in pharmaceutical preparations with satisfactory results. Furthermore, the possible mechanism for the CL reaction has been discussed in detail on the basis of UV and CL spectra. PMID:24802238

  20. Optimization and evaluation of alkaline potassium permanganate pretreatment of corncob.

    Ma, Lijuan; Cui, Youzhi; Cai, Rui; Liu, Xueqiang; Zhang, Cuiying; Xiao, Dongguang

    2015-03-01

    Alkaline potassium permanganate solution (APP) was applied to the pretreatment of corncob with a simple and effective optimization of APP concentration, reaction time, temperature and solid to liquid ratio (SLR). The optimized pretreatment conditions were at 2% (w/v) potassium permanganate with SLR of 1:10 treating for 6h at 50°C. This simple one-step treatment resulted in significant 94.56% of the cellulose and 81.47% of the hemicellulose recoveries and 46.79% of the lignin removal of corncob. The reducing sugar in the hydrolysate from APP-pretreated corncob was 8.39g/L after 12h enzymatic hydrolysis, which was 1.44 and 1.29 folds higher than those from raw and acid pretreated corncobs. Physical characteristics, crystallinity and structure of the pretreated corncob were analyzed and assessed by SEM, XRD and FTIR. The APP pretreatment process was novel and enhanced enzymatic hydrolysis of lignocellulose by affecting composition and structural features. PMID:25585256

  1. Hg (II Catalysed Oxidation of D-Arabinose and D-Mannose by Acidic Solution of Potassium Permanganate: Kinetics and Mechanism

    *1R. Naz

    2014-09-01

    Full Text Available The kinetics of Hg (II catalyzed oxidation of D-Arabinose (Ara and D-Mannose (Man by potassium permanganate in acidic medium have been studied spectrophotometrically in the temperature range 30-50oC. The reactions exhibit first order kinetics with respect to [Man] and [MnO4-] while second order with [Ara]. The reaction rates were found to be unaffected by the change in [H+]. It has been observed that Hg (II catalyzed the reaction but as the [Hg(II] increases, reaction rate becomes independent. Negligible effect of ionic strength (μ on the rate of oxidation has also been noted which supports the presence of at least one neutral specie in the rate determining step. The rate of oxidation was influenced by the change in temperature. Various activation parameters have been calculated. Formic acid and erythronic acid were identified as main oxidation product in case of arabinose while for mannose formic acid and arabinonic acid were identified. A mechanism consistent with the above findings has also been proposed.

  2. 高锰酸钾氧化法制备3,5-吡啶二甲酸%The Preparation of 3,5-Pyridinedicarboxylic acid with Potassium permanganate by Oxidation

    黄昌龙; 王宏胜; 李公春; 田孝旭

    2012-01-01

    3,5-Pyridinedicrboxylic acid was prepared by oxidation with 3,5-dimethylpyridine as raw material,potassium permanganate as oxidizing agent.The recation yield was more than 60%.%采用KMnO4作氧化剂,3,5-二甲基吡啶为原料,通过氧化反应制备了3,5-吡啶二甲酸,产率达到60%以上。

  3. Potassium Permanganate as an Alternative for Gold Mining Wastewater Treatment

    Ordiales, M.; Fernández, D.; Verdeja, L. F.; Sancho, J.

    2015-09-01

    The feasibility of using potassium permanganate as a reagent for cyanide oxidation in wastewater was experimentally studied. Both artificial and production wastewater from two different gold mines were tested. The experiments had three goals: determine the optimum reagent concentration and reaction time required to achieve total cyanide removal, obtain knowledge of the reaction kinetics, and improve the management of the amount of reagent. The results indicate that potassium permanganate is an effective and reliable oxidizing agent for the removal of cyanide from gold mining wastewater.

  4. Screening of cannabinoids in industrial-grade hemp using two-dimensional liquid chromatography coupled with acidic potassium permanganate chemiluminescence detection.

    Pandohee, Jessica; Holland, Brendan J; Li, Bingshan; Tsuzuki, Takuya; Stevenson, Paul G; Barnett, Neil W; Pearson, James R; Jones, Oliver A H; Conlan, Xavier A

    2015-06-01

    Widely known for its recreational use, the cannabis plant also has the potential to act as an antibacterial agent in the medicinal field. The analysis of cannabis plants/products in both pharmacological and forensic studies often requires the separation of compounds of interest and/or accurate identification of the whole cannabinoid profile. In order to provide a complete separation and detection of cannabinoids, a new two-dimensional liquid chromatography method has been developed using acidic potassium permanganate chemiluminescence detection, which has been shown to be selective for cannabinoids. This was carried out using a Luna 100 Å CN column and a Poroshell 120 EC-C18 column in the first and second dimensions, respectively. The method has utilized a large amount of the available separation space with a spreading angle of 48.4° and a correlation of 0.66 allowing the determination of more than 120 constituents and mass spectral identification of ten cannabinoids in a single analytical run. The method has the potential to improve research involved in the characterization of sensitive, complex matrices. PMID:25845561

  5. Research into Uncertainty in Measurement of Seawater Chemical Oxygen Demand by Potassium Iodide-Alkaline Potassium Permanganate Determination Method.

    Zhang, Shiqiang; Guo, Changsong

    2007-01-01

    Using the glucose and L-glutamic-acid to prepare the standard substance according to the ratio of 1:1, and the artificial seawater and the standard substance to prepare a series of standard solutions, the distribution pattern of uncertainty in measurement of seawater COD is obtained based on the measured results of the series of standard solutions by the potassium iodide-alkaline potassium permanganate determination method. The distribution pattern is as follows: Uncertainty in measurement is...

  6. Experimental improvement of preparation for adipic acid through oxidation of potassium permanganate%高锰酸钾氧化制备己二酸的实验改进

    徐翔宇

    2011-01-01

    通过改变高锰酸钾氧化环己醇制备己二酸的方法,使制备己二酸的实验变得简便、过程简单、反应时间缩短、产率提高、实验效果理想.%Through changing the method of the preparation for adipic acid of the potassium permanganate oxidizing cyclohexanol, the experiment of preparation for adipic acid becomes more simple and convenient. The whole process is simple, the reaction time is shortened, the yield is increased and the experimental results are very ideal.

  7. Inhibiting and healing effects of potassium permanganate for silane films

    In this study, the inhibiting and healing effects of potassium permanganate for silane films were investigated, and the optimal mole ratio of MnO4−/Cl− was also obtained. The inhibiting process and healing mechanism were studied by electrochemical measurements and scanning electron microcopy coupled with energy dispersive spectroscopy. Results demonstrated that the introduction of potassium permanganate to electrolyte could stop the development of corrosion process and the optimal inhibiting mole ratio of MnO4−/Cl− is 2 × 10−1 with a protective efficiency about 99.24%. According to its high protective efficiency and the nice results of long-term immersion test, potassium permanganate as an inhibitor could prolong the lifetime of silane films and expand its scope of application. - Highlights: • Healing sol–gel film was obtained by adding KMnO4 into electrolyte. • An optimal inhibitor mole ratio of MnO4−/Cl− for Si sol–gel was 2 × 10−1. • The best protective efficiency was approximately 99.24%. • The inhibiting effect may be due to production of insoluble manganese hydroxide/oxide

  8. Inhibiting and healing effects of potassium permanganate for silane films

    She, Zuxin; Li, Qing, E-mail: liqingswu@yeah.net; Wang, Shaoyin; Luo, Fei; Chen, Funan; Li, Longqin

    2013-07-31

    In this study, the inhibiting and healing effects of potassium permanganate for silane films were investigated, and the optimal mole ratio of MnO{sub 4}{sup −}/Cl{sup −} was also obtained. The inhibiting process and healing mechanism were studied by electrochemical measurements and scanning electron microcopy coupled with energy dispersive spectroscopy. Results demonstrated that the introduction of potassium permanganate to electrolyte could stop the development of corrosion process and the optimal inhibiting mole ratio of MnO{sub 4}{sup −}/Cl{sup −} is 2 × 10{sup −1} with a protective efficiency about 99.24%. According to its high protective efficiency and the nice results of long-term immersion test, potassium permanganate as an inhibitor could prolong the lifetime of silane films and expand its scope of application. - Highlights: • Healing sol–gel film was obtained by adding KMnO{sub 4} into electrolyte. • An optimal inhibitor mole ratio of MnO{sub 4}{sup −}/Cl{sup −} for Si sol–gel was 2 × 10{sup −1}. • The best protective efficiency was approximately 99.24%. • The inhibiting effect may be due to production of insoluble manganese hydroxide/oxide.

  9. New phenomenon of potassium permanganate treatment effect in polymer irradiated with heavy ions

    Background: Nuclear track membranes offer distinct advantages over conventional membranes due to their precisely determined structure. Their pore size, shape and density can be controlled intentionally so that a membrane with the required characteristics can be produced. The track etching technology plays an important role in the production of nuclear track membranes. Purpose: The effect of potassium permanganate solution pretreatment on the etching rate for polyethylene terephthalate film (PET) is studied in this work. Methods: The conductivity method is used in this research. Under different conditions, the PET films were pretreated for 1 h, 2 h, 3 h, 4 h, 5 h and 6 h by potassium permanganate solution. 5%, 15%, 25%, 35% of 2-mol·L-1 sulfuric acid solutions were added in 0.1 mol·L-1 potassium permanganate solution. Results: Track etching rate reached a peak at 2 h, Afterwards, with the pretreatment time increasing, the track etching rate declined, and the longer of the pretreatment time, the smaller of the bulk etching rate. Half cone angle either. Adding to sulfuric solution, the experimental results show that the effect on track etching rate is small, with the amount of sulfuric acid increasing, bulk etching rate becomes larger, the same change with half cone angle. In addition, the DC voltage used in the conductivity method also has impact on the track etching rate. Conclusion: The experiment has provided a method to improve the etching rate. (authors)

  10. Kinetics studies of oxidation of niacinamide by alkaline potassium permanganate

    Sandipsingh Gour; Sayyed Hussain; Mazahar Farooqui

    2012-01-01

    The oxidation of niacinamide in alkaline media is carried out using potassium permanganate as a oxiding agent. The reaction was monitored using UV-Visible spectrophotometer at 525 nm. It was found to be zero order with respect to oxidant,, fractional order with respect to hydrogen ion concentration and first order with respect to substrate. The thermodynamic parameters(were determinied . The average (?G#) was found to be 87.60 KJ/mol. The values ?S# was found to be -0.2132 K...

  11. 21 CFR 250.108 - Potassium permanganate preparations as prescription drugs.

    2010-04-01

    ... tablets of potassium permanganate constitute safe dosage forms for use in self-medication. It is the... for use in self-medication are aqueous solutions containing not more than 0.04 percent potassium permanganate. Such solutions are safe for use in self-medication only by external application to the skin....

  12. 75 FR 52509 - Potassium Permanganate from the People's Republic of China: Final Results of Expedited Sunset...

    2010-08-26

    ... International Trade Administration Potassium Permanganate from the People's Republic of China: Final Results of... initiation of the sunset review of the antidumping duty order on potassium permanganate from the PRC pursuant... (``Sunset'') Review, 75 FR 23240 (May 3, 2010). On May 6, 2010, the Department received a notice of...

  13. Separation and characterization of ciprofloxacin, difloxacin, lomefloxacin, norfloxacin, and ofloxacin oxidation products under potassium permanganate treatment in acidic medium by UPLC-MS/MS.

    Hubicka, Urszula; Zmudzki, Paweł; Zuromska-Witek, Barbara; Zajdel, Paweł; Pawłowski, Maciej; Krzek, Jan

    2013-05-15

    A simple, sensitive and reproducible ultra-performance liquid chromatography method for determination of ciprofloxacin, difloxacin, lomefloxacin, norfloxacin and ofloxacin oxidation stability under permanganate treatment in acidic conditions at pH from 3.0 to 6.0, was developed. Chromatographic separations were carried out using the Acquity UPLC BEH C18 column; (2.1×100 mm, 1.7 μm particle size). The column was maintained at 40°C, and eluted under isocratic conditions using 83% of eluent A and 17% of eluent B over 6.5 min, at a flow rate of 0.3 mL min(-1). Eluent A: water/formic acid (0.1 v/v%); eluent B: acetonitrile/formic acid (0.1 v/v%). An oxidation process followed kinetic of the second order reaction and depended upon solution acidity. Oxidation of fluoroquinolones proceeded at piperazine moiety yielding respective hydroxy and oxo analogs, and remaining the quinolone fragment intact. Structures of products formed were assigned on a basis of UPLC/MS/MS fragmentation pathways. PMID:23618144

  14. Kinetics studies of oxidation of niacinamide by alkaline potassium permanganate

    Sandipsingh Gour

    2012-04-01

    Full Text Available The oxidation of niacinamide in alkaline media is carried out using potassium permanganate as a oxiding agent. The reaction was monitored using UV-Visible spectrophotometer at 525 nm. It was found to be zero order with respect to oxidant,, fractional order with respect to hydrogen ion concentration and first order with respect to substrate. The thermodynamic parameters(were determinied . The average (?G# was found to be 87.60 KJ/mol. The values ?S# was found to be -0.2132 KJ/mole and energy of activation was found to be 23.95 KJ/mole. A suitable mechanism is proposed based on the experimental conditions.

  15. Kinetics and Mechanism of Oxidation of Phenyl Acetic Acid and Dl-Mandelic Acid by Permanganate in Acid Medium

    B. Syama Sundar; P.S.Radhakrishna murti

    2014-01-01

    Kinetics of oxidation of phenyl acetic acid and DL- Mandelic acid by potassium permanganate in aqueous acetic acid and perchloric acid mixture reveals that the kinetic orders are first order in oxidant, first order in H+ and zero order in substrate for phenyl acetic acid. DL-Mandelic acid exhibits first order in oxidant and zero order in substrate. The results are rationalised by a mechanism involving intermediate formation of mandelic acid in case of Phenyl acetic acid and ester formation wi...

  16. Luminol-potassium permanganate chemiluminescence system for the determination of three anthracycline antibiotics

    2010-01-01

    Objective To establish a flow-injection chemiluminescence method for the determination of doxorubicin,epirubicin and mitoxantrone and study its reaction mechanism.Methods In alkaline medium,chemiluminescence of luminol-potassium permanganate system could be inhibited obviously by anthracycline antibiotics.Combined with flow-injection technique,a new chemiluminescence method for determining the anthracycline antibiotics was set up.The chemiluminescence mechanism of the luminol-potassium permanganate system w...

  17. Reactivity of potassium permanganate and tetraethylammonium chloride with mismatched bases and a simple mutation detection protocol.

    Lambrinakos, A; Humphrey, K E; Babon, J J; Ellis, T P; Cotton, R G

    1999-01-01

    Many mutation detection techniques rely upon recognition of mismatched base pairs in DNA hetero-duplexes. Potassium permanganate in combination with tetraethylammonium chloride (TEAC) is capable of chemically modifying mismatched thymidine residues. The DNA strand can then be cleaved at that point by treatment with piperidine. The reactivity of potassium permanganate (KMnO4) in TEAC toward mismatches was investigated in 29 different mutations, representing 58 mismatched base pairs and 116 mis...

  18. Degradation of progestagens by oxidation with potassium permanganate in wastewater effluents

    Fayad, Paul B; Zamyadi, Arash; Broseus, Romain; Prévost, Michèle; Sauvé, Sébastien

    2013-01-01

    Background This study investigated the oxidation of selected progestagenic steroid hormones by potassium permanganate at pH 6.0 and 8.0 in ultrapure water and wastewater effluents, using bench-scale assays. Second order rate constants for the reaction of potassium permanganate with progestagens (levonorgestrel, medroxyprogesterone, norethindrone and progesterone) was determined as a function of pH, presence of natural organic matter and temperature. This work also illustrates the advantages o...

  19. Potassium permanganate poisoning--a rare cause of fatal self poisoning.

    K L Ong; Tan, T H; Cheung, W L

    1997-01-01

    Attempted suicide by self poisoning is common because of the ready availability of drugs, whether prescribed or bought over the counter. In some cases, the ingestion of seemingly innocuous household products or chemicals can result in death. Potassium permanganate is an example. Poisoning with potassium permanganate can be fatal when a significant amount is ingested, as shown by a patient who suffered both the corrosive and systemic toxic effects of this chemical.

  20. Haemorrhagic pancreatitis--a cause of death in severe potassium permanganate poisoning.

    Middleton, S J; Jacyna, M.; McClaren, D.; Robinson, R; Thomas, H C

    1990-01-01

    Severe potassium permanganate poisoning (more than 10 g of potassium permanganate) is invariably associated with massive systemic upset and death. Multiple organ damage has been recognized as an inevitable consequence of such an overdose, although pancreatitis has not been previously reported. Death due to cardiovascular collapse and profound hypotension is a common end point in those who reach hospital, but the pathogenesis is uncertain. We report a case of haemorrhagic pancreatitis followin...

  1. Effect of Processing Time and Concentration of Potassium Permanganate on Physico-Mechanical Properties of Denim Jeans During Stone Washing

    Elias Khalil

    2015-01-01

    Three 100% cotton denim jeans were treated with stone acid wash with the variation of processing time (1.5, 2 & 2.5 minutes) and concentration (1.5, 2 & 2.5g/l) of potassium permanganate after typical enzyme bleach wash. Various physical and mechanical properties (Hand feel, Weight, EPI, and PPI, Tensile strength, Shrinkage, Seam strength, Count & stiffness) were investigated before and after each treatment (concentration and respective time) according to standard test methods. It...

  2. Spectrophotometric Determination of Pipazethate HCl and Dextromethorphan HBr using Potassium Permanganate.

    Gouda, Ayman Abou El-Fetouh; El-Sheikh, Ragaa; El Shafey, Zeineb; Hossny, Nagda; El-Azzazy, Rham

    2008-12-01

    Rapid, simple and sensitive validated spectrophotometric methods have been described for the assay of pipazethate HCl (PiCl) and dextromethorphan HBr (DEX) either in pure form or in pharmaceutical formulations. The proposed methods were based on the oxidation of the studied drugs by a known excess of potassium permanganate in acidic medium and estimating the unreacted permanganate with amaranth dye (method A), acid orange II (method B), indigocarmine (method C) and methylene blue (method D), in the same acid medium at a suitable λmax=521, 485, 610 and 664 nm, respectively. Beer's law is obeyed in the concentration range of 2.0-16 and 2.0-15 μg mL(-1) for PiCl and DEX, respectively with correlation coefficient (n=6) ≥ 0.9993. The apparent molar absorptivity and sandell sensitivity values are in the range 1.062-1.484 × 10(4), 3.35-4.51 × 10(4) L mol(-1) cm(-1) and 29.36-41.03, 8.21-11.06 ng cm(-2) for PiCl and DEX, respectively. Different variables affecting the reaction were studied and optimized. The proposed methods were applied successfully to the determination of the examined drugs either in a pure or pharmaceutical dosage forms with good accuracy and precision. No interferences were observed from excipients and the results obtained were in good agreement with those obtained using the official methods. PMID:23675101

  3. Spectrophotometric Determination of Aminoglycoside Antibiotics Based on their Oxidation by Potassium Permanganate

    A rapid, simple and sensitive validated spectrophotometric methods have been described for the assay of neomycin and streptomycin either in pure form or in pharmaceutical formulations. The proposed methods were based on the oxidation of the studied drugs by a known excess of potassium permanganate in acidic medium and estimating the unreacted permanganate with amaranth dye (method A), acid orange II (method B), indigocarmine (method C), and methylene blue (method D), in the same acid medium at a suitable λmax=521, 485, 610 and 664 nm, respectively. Beer's law is obeyed in the concentration range of 5-10 and 2-7 mg mL-1 for neomycin and streptomycin, respectively. The apparent molar absorptivity and sandell sensitivity values are in the range 5.47-6.20x104, 2.35-2.91x105 L mol-1 cm-1 and 7.57-8.59, 5.01-6.2 ng cm-2 for neomycin and streptomycin, respectively. Different variables affecting the reaction were studied and optimized. The proposed methods were applied successfully to the determination of the examined drugs either in a pure or pharmaceutical dosage forms with good accuracy and precision. No interferences were observed from excipients and the results obtained were in good agreement with those obtained using the official methods

  4. Potassium permanganate toxicity: A rare case with difficult airway management and hepatic damage

    Vijay Kumar Agrawal; Abhishek Bansal; Ranjeet Kumar; Bhanwar Lal Kumawat; Parul Mahajan

    2014-01-01

    Potassium permanganate (KMnO 4 ) is rarely used for suicidal attempt. Its ingestion can lead to local as well as systemic toxicities due to coagulation necrosis and damage, caused by free radicals of permanganate. We recently managed a case of suicidal ingestion of KMnO 4 in a lethal dose. She had significant narrowing of upper airway leading to difficult intubation as well as hepatic dysfunction and coagulopathy as systemic manifestation. We suggest to keep ourselves ready to handle difficul...

  5. Visible Spectrophotometric determination of Chlorpheniramine maleate and Diphenhydramine hydrochloride in raw and dosage form using Potassium permanganate

    Mohammed Al Bratty

    2016-05-01

    Full Text Available Two simple, rapid and sensitive spectrophotometric methods developed for Chlorpheniramine Maleate (CPM and Diphenhydramine Hydrochloride (DPH determination in pure and pharmaceutical preparation using Potassium Permanganate. The solvent system used was potassium permanganate. The method developed by adding a known amount of permanganate to CPM and DPH in acid and alkaline medium, the unreacted permanganate was determined at 550 nm; method A and bluish green colour of Manganate at 610 nm; method B. In method A decrease in absorbance or method B increase in absorbance as concentrations of CPM and DPH was measured. Beer’s law was obeyed at a range of 2.5 to 20 μg / ml in both the methods A and B. The method was validated as per International Council for Harmonisation guideline. The proposed methods were effectively used for the determination of CPM and DPH in commercially available syrup. The average percentages of recoveries of CPM were 99.20 ± 1.29% (method A, 100.6% ± 1.43% (method B; DPH 98.50 ± 1.29% (method A and 100.20 ± 1.43% (method B. The methods were efficiently validated and used for quantitative determination of Chlorpheniramine maleate and Diphenhydramine Hydrochloride in pure and syrup preparations.

  6. Effect of Potassium Permanganate Nano-Zeolite and Storage Time on Physicochemical Properties of Kiwifruit (Hayward

    H Mirzaee Moghaddam

    2016-04-01

    Full Text Available In this research, kiwifruits (Hayward were selected in two mass ranges (large and small. They were placed in one-liter glass bottles in the vicinity of the polyethylene sachets containing potassium permanganate nano-zeolite (0, 0.2, 0.4 and 0.8 g and were stored in a germinator (5°C temperature and 30% relative humidity. Then, the physicochemical properties of the fruits (soluble solid content, pH, moisture content and fruit firmness and potassium permanganate nano-zeolite color (L, Hue angle, Chroma and E were measured after t 0, 2, 4 and 6 weeks of storage. The factorial treatment structure based on completely randomized block design was used for analyzing the obtained data. The results of analysis showed that potassium permanganate nano-zeolite had a significant effect on the measured physicochemical properties, except for the moisture content (P

  7. Effect of Potassium Permanganate Nano-Zeolite and Storage Time on Physicochemical Properties of Kiwifruit (Hayward)

    H Mirzaee Moghaddam; M.H Khoshtaghaza; M Barzegar Bafroee; Salimi, A

    2016-01-01

    In this research, kiwifruits (Hayward) were selected in two mass ranges (large and small). They were placed in one-liter glass bottles in the vicinity of the polyethylene sachets containing potassium permanganate nano-zeolite (0, 0.2, 0.4 and 0.8 g) and were stored in a germinator (5°C temperature and 30% relative humidity). Then, the physicochemical properties of the fruits (soluble solid content, pH, moisture content and fruit firmness) and potassium permanganate nano-zeolite color (L, Hue...

  8. Flow injection-chemiluminescence determination of phenol using potassium permanganate and formaldehyde system

    Cao, Wei; Mu, Xuemin; Yang, Jinghe; Shi, Wenbo; Zheng, Yongcun

    2007-01-01

    It is found that phenol can react with potassium permanganate in the acidic medium and produce chemiluminescence, which is greatly enhanced by formaldehyde. The optimum conditions for this chemiluminescent reaction are in detail studied using a flow injection system. The experiments indicate that under optimum conditions, the chemiluminescence intensity is linearly related to the concentration of phenol in the range 5.0 × 10 -9 to 1.0 × 10 -6 g mL -1 with a detection limit (3 σ) of 3 × 10 -9 g mL -1. The relative standard deviation is 1.2% for 4.0 × 10 -7 g mL -1 phenol solution in 11 repeated measurements. This method has the advantages of simple operation, fast response and high sensitivity. The method is successfully applied to the determination of phenol in the waste water.

  9. L-酪氨酸-高锰酸钾-硫酸化学发光体系研究%Chemiluminescent System of L-Tyrosine-Potassium Permanganate-Sulfuric Acid

    朱昌青; 李永新; 王伦

    2001-01-01

    The reaction between L-tyrosine and potassium permanganate in thesufuric acid medium gave intensive chemiluminescence. A new analytical method for determination of L-tyrosine was proposed.The linear relationship between the intensity of chemiluminescence and the concentration of L-tyrosine is in the range of 4.0×10-6~2.8×10-5 mol/L with detection limit of 8.8×10-7 mol/L. The RSD for measurement of 1.0×10-5 mol/L L-tyrosine (n=10) is 2.7 %. The method was applied to the determination of L-tyrosine in injection of amino-acid with satisfactory results.%在硫酸介质中,L-酪氨酸与高锰酸钾反应能产生较强的化学发光,据此建立了测定L-酪氨酸的分析方法。该法线性范围为4.0×10-6~2.8×10-5mol/L;检出限为8.8×10-7mol/L;对1.0×10-5mol/L的L-酪氨酸进行连续10次平行测定,相对标准偏差为2.7%。该法已应用于测定医用氨基酸注射液中的L-酪氨酸。

  10. Kinetics of oxidation of dimethyl trisulfide by potassium permanganate in drinking water

    XiaoyanMA; Shifei HU; Hongyu WANG; Jun LI; Jing HUANG; Yun ZHANG; Weigang LU; Qingsong LI

    2012-01-01

    Metabolites of algae such as geosmin, 2- methylisoborneol etc. are reported to induce pungent odors into drinking water and attract additional scientifc attention. Recently, in China, taste and odor outbreaks in drinking water supply have become increasingly common. In source water affected by eutrophication, dimethyl trisulfide, speculated to be produced by decayed algae, was found to be the source of taste and odor issues and can be removed effectively by usual oxidation agents. In this experimental study, batch scale tests were carried out focusing on the removal of dimethyl trisulfide. Reaction kinetics of dimethyl trisulfide oxidized by potassium permanganate in water had been studied; influence factors such as pH, organic substrate, other existed taste, and odor contaminant in equivalent concentration were also dis- cussed. Results showed that dimethyl trisulfide can be removed by potassium permanganate efficiently; the ratio can reach more than 70% with oxidant dosage of 4 mg. L~ and contact time prolonged to 120 min. The dimethyl trisulfide decomposition followed a second-order kinetics pattern with a rate constant k -- 0.00213 L.(min.mg)-1. Typically, the degradation rate of dimethyl trisulfide was increased with the increasing KMnO4 dosage, but dramatically dropped with the increasing levels of humic acid (1.8-4.5 mg. L-1) and other odor-causing compounds (e.g. fl-cyclocitral, 0-1886.0 pg.L-1). Solution pH (5.2- 9.0) and initial dimethyl trisulfide concentration did not significantly affected the degradation. This study demon- strates that KMnO4 oxidation is an effective option to remove dimethyl trisulfide from water.

  11. Treating a natural outbreak of columnaris in channel catfish with copper sulfate and potassium permanganate

    An F. Columnare-exclusive epizootic occurred in fingerling channel catfish (Ictalurus punctatus) during normal tank culture practices at SNARC. Fish were transferred to the ultra low-flow system and 2.1 mg/L copper sulfate or 3 mg/L potassium permanganate was administered; an untreated control was ...

  12. Effects of Smallmouth Buffalo and Potassium Permanganate Treatment on Plankton ans Pond Water Quality

    Removal of intermediate hosts is one option for control of disease in channel catfish production systems. We evaluated use of predaceous fish (smallmouth buffalo) and chemical treatment (potassium permanganate) to remove snails that serve as hosts protecting Dero worms. Both methods of treatment r...

  13. Preparation and Analysis of Solid Solutions in the Potassium Perchlorate-Permanganate System.

    Johnson, Garrett K.

    1979-01-01

    Describes an experiment, designed for and tested in an advanced inorganic laboratory methods course for college seniors and graduate students, that prepares and analyzes several samples in the nearly ideal potassium perchlorate-permanganate solid solution series. The results are accounted for by a theoretical treatment based upon aqueous…

  14. Effectiveness of copper sulfate and potassium permanganate on channel catfish infected with Flavobacterium columnare

    Copper sulfate (CuSO4) and potassium permanganate (KMnO4) were evaluated for their effectiveness to curtail mortality and decrease bacterial load in fish tissues and water in channel catfish Ictalurus punctatus naturally infected with Flavobacterium columnare, the causative agent of columnaris. Fis...

  15. Potassium permanganate is not an effective pond disinfectant to control Dero digitata

    Proliferative gill disease (PGD) is a major problem in cultured channel catfish, Ictalurus punctatus. This parasite requires Dero digitata to complete its life cycle. It is believed potassium permanganate disinfects ponds and reduces D. digitata populations, but this practice has not been verified...

  16. XPERT DESIGN AND DIAGNOSTICS' (XDD) IN-SITU CHEMICAL OXIDATION PROCESS USING POTASSIUM PERMANGANATE (KMNO4)

    Xpert Design and Diagnostic's (XDD)potassium permanganate in situ chemical oxidation (ISCO) process was evaluated under the EPA Superfund Innovative Technology Evaluation (SITE) Program at the former MEC Building site located in Hudson, New Hampshire. At this site, both soil and ...

  17. Comparison of tank treatments with copper sulfate and potassium permanganate for sunshine bass with ichthyobodosis

    The biflagellated single-cell parasite Ichthyobodo nectator can cause significant losses among fish populations, particularly those cultured in tanks. Potassium permanganate and CuSO4 treatments were evaluated against a naturally-occurring I. nectator infestation on sunshine bass raised in tanks. F...

  18. Phase-transfer catalysis applied to the oxidation of nonaqueous phase trichloroethylene by potassium permanganate

    Seol, Yongkoo; Schwartz, Franklin W.

    2000-07-01

    The use of potassium permanganate to oxidize chlorinated solvents has been demonstrated as an effective process for treating nonaqueous phase liquids in ground-water systems. This study evaluates the effectiveness of phase-transfer catalysts (PTCs) in enhancing the degradation rate. PTCs work by transferring permanganate ion into the nonaqueous phase where it initiates oxidative decomposition. We studied the oxidation of trichloroethylene (TCE) by potassium permanganate, conducting kinetic batch experiments in conjunction with three PTCs that varied in terms of their extraction constants and molecular structures. Using the same batch technique, we examined whether PTCs could enhance the aqueous solubility of TCE. Solubilization could also increase oxidation rates in the aqueous phase. Rates of TCE oxidation in solutions containing the PTCs and a blank were estimated separately by measuring chloride concentration and UV-Vis absorbance in the aqueous phase. The enhanced rate of TCE destruction by the PTCs was reflected by an increase in the rate of consumption of permanganate ion and production of chloride ion. There was no tendency for the PTCs, however, to solubilize TCE in the aqueous phase. Therefore, the PTCs increased the rate of TCE decomposition by catalyzing permanganate oxidation in the organic phase. This study suggests that there is significant potential for testing this scheme under field conditions.

  19. Total Antioxidant Capacity of Serum Determined Using the Potassium Permanganate Agar Method Based on Serum Diffusion in Agar

    Ying Zhou; Meijuan Zhang; Hui Liu

    2015-01-01

    Objectives. To develop a new method for determining total antioxidants in serum and to evaluate the total antioxidant capacity of organisms. Design and Methods. Sodium hyposulfite (Na2S2O3) and serum were used to evaluate the linearity and precision of the potassium permanganate agar method. The area of serum diffusion in samples from 30 intensive care unit (ICU) patients compared with 44 healthy subjects was determined by the potassium permanganate agar method. Results. The linearity (R 2 in...

  20. Potassium permanganate as an in situ probe for B-Z and Z-Z junctions.

    Jiang, H; Zacharias, W; Amirhaeri, S

    1991-01-01

    The availability of DNA structural probes that can be applied to living cells is essential for the analysis of biological functions of unusual DNA structures adopted in vivo. We have developed a chemical probe assay to detect and quantitate left-handed Z-DNA structures in recombinant plasmids in growing E. coli cells. Potassium permanganate selectively reacts with B-Z or Z-Z junction regions in supercoiled plasmids harbored in the cells. Restriction enzyme recognition sites located at these j...

  1. 1,4-Diketones from Cross-Conjugated Dienones: Potassium Permanganate-Interrupted Nazarov Reaction.

    Kwon, Yonghoon; Schatz, Devon J; West, Frederick G

    2015-08-17

    A domino potassium permanganate-interrupted Nazarov reaction to yield syn-2,3-disubstituted 1,4-diketones via a decarbonylative cleavage of the Nazarov oxyallyl intermediate, believed to be without precedent, is presented. This process allows syn substituents to be established stereospecifically on the 2-carbon bridge connecting the ketone carbonyl carbons, and the formation of one carbon-carbon and two carbon-oxygen bonds. Two carbon-carbon bonds are cleaved in this process. PMID:26138361

  2. Kinetic Determination of Acarbose and Miglitol in Bulk and Pharmaceutical Formulations Using Alkaline Potassium Permanganate

    Ibrahim, F. A.; Ali, F. A.; Ahmed, S. M.; Tolba, M. M.

    2007-01-01

    A simple and sensitive kinetic spectrophotometric method was established for the determination of acarbose and miglitol in bulk and in their pharmaceutical preparations using alkaline potassium permanganate as an oxidizing agent. The method involves determination of acarbose and miglitol by kinetic studies of their oxidation at room temperature for a fixed time of 15 minutes for acarbose and 25 minutes for miglitol. The absorbance of the colored manganate ion was measured at 610 nm. Alternati...

  3. Kinetics and Mechanism of Oxidation of Phenyl Acetic Acid and Dl-Mandelic Acid by Permanganate in Acid Medium

    B.Syama Sundar

    2014-06-01

    Full Text Available Kinetics of oxidation of phenyl acetic acid and DL- Mandelic acid by potassium permanganate in aqueous acetic acid and perchloric acid mixture reveals that the kinetic orders are first order in oxidant, first order in H+ and zero order in substrate for phenyl acetic acid. DL-Mandelic acid exhibits first order in oxidant and zero order in substrate. The results are rationalised by a mechanism involving intermediate formation of mandelic acid in case of Phenyl acetic acid and ester formation with Mn (VII in case of DL-Mandelic acid. The following order of reactivity is observed: DL-Mandelic acid > Phenyl acetic acid. The high reactivity of DL-Mandelic acid over phenyl acetic acid may be due to different mechanisms operating with the two substrates and benzaldehyde is the final product in both the cases.

  4. Present Situation and Prospect of Potassium Permanganate Production Development%高锰酸钾生产发展现状及展望

    李天杰

    2013-01-01

    The development process of potassium permanganate production is introduced in this paper, the present situation of potassium permanganate industry is analyzed too, and the development trend of potassium permanganate industry is prospected.%对高锰酸钾生产的发展过程进行了介绍,分析了高锰酸钾工业目前的形式,对今后高锰酸钾工业走向进行了展望.

  5. Chemiluminescence behavior of sodium hydrogen carbonate in the potassium permanganate-hydrogen peroxide reaction

    2010-01-01

    Chemiluminescence (CL) phenomenon of hydrogen peroxide with potassium permanganate in the presence of sodium hydrogen carbonate was reported.Effects of the surfactant on the CL system were investigated.Nonionic surfactants could effectively increase the CL signal.Radical scavengers and organic reagents such as nitro blue tetrazolium chloride (NBT),cytochrome c,sodium azide,ascorbic acid,thiourea,tert-butanol and dimethyl sulphoxide were used to study the emitting species.CL emission spectrum was recorded and the results showed that the maximal emission wavelengths of NaHCO3-H2O2-KMnO4 system were 440 and 634 nm.The mechanism was discussed based on electron spin resonance (ESR) spectra,fluorescence spectra and UV-vis absorption spectra.The addition of rhodamine B or uranine into this CL system enhanced the CL signal.It was due to part of the energy transfer from singlet oxygen and excited triplet dimers of two CO2 molecules to rhodamine B or uranine.The CL could be induced by excited rhodamine B or uranine.

  6. Flow injection-chemiluminescence determination of dopamine using potassium permanganate and formaldehyde system

    Wabaidur, Saikh Mohammad; Alothman, Zeid Abdullah; Alam, Seikh Mafiz; Lee, Sang Hak

    2012-10-01

    A simple and sensitive flow injection-chemiluminescence method for the determination of dopamine has been proposed. The method is based on the enhancing effect of dopamine on the chemiluminescence emission generated by the reaction of potassium permanganate with formaldehyde in an acidic medium. The proposed procedure allows the determination of dopamine over the concentration range of 3.1 × 10-8-1.7 × 10-5 mol/L and with a detection limit of 1.0 × 10-8 mol/L. The linear regression equation was F = 44.4912 + 1.07 × 109 ∗ C (correlation coefficient, r2 = 0.9998). The relative standard deviation is 2.1% for the determination of 1.0 × 10-8 mol/L dopamine (n = 11). The method was successfully applied to the determination of dopamine in pharmaceutical preparation with satisfactory results. The recoveries were found in the range of 96.5-101.3%.

  7. Potassium permanganate toxicity: A rare case with difficult airway management and hepatic damage

    Vijay Kumar Agrawal

    2014-01-01

    Full Text Available Potassium permanganate (KMnO 4 is rarely used for suicidal attempt. Its ingestion can lead to local as well as systemic toxicities due to coagulation necrosis and damage, caused by free radicals of permanganate. We recently managed a case of suicidal ingestion of KMnO 4 in a lethal dose. She had significant narrowing of upper airway leading to difficult intubation as well as hepatic dysfunction and coagulopathy as systemic manifestation. We suggest to keep ourselves ready to handle difficult airway with the aid of fiber optic bronchoscope or surgical airway management in such patients. Upper gastrointestinal (GI endoscopy should be done at the earliest to determine the extent of upper GI injury and further nutrition planning.

  8. Enantioselective Oxidation of Alkenes with Potassium Permanganate Catalyzed by Chiral Dicationic Bisguanidinium.

    Wang, Chao; Zong, Lili; Tan, Choon-Hong

    2015-08-26

    Chiral anion-controlled ion-pairing catalysis was demonstrated to be a wide-ranging strategy that can utilize a variety of cationic metal species. In a similar manner, we envision a complementary strategy using chiral cation in partnership with inorganic anionic metal salts. Herein, we report a chiral dicationic bisguanidinium-catalyzed asymmetric oxidation reaction of alkenes with potassium permanganate. Chiral induction is attributed to ion-pairing interaction between chiral cation and enolate anion. The success of the current permanganate oxidation reaction together with mechanistic insights should provide inspiration for expansion to other anionic metal salts and would open up new paradigms for asymmetric transition metal catalysis, phase-transfer catalysis, and ion-pairing catalysis. PMID:26237178

  9. 高锰酸钾氧化马鞭草烯酮的研究%Oxidation of Verbenone with Potassium Permanganate

    孙小玲; 王蕊

    2011-01-01

    考察了反应温度、反应时间、高锰酸钾用量、乙酸与水溶液体积比对高锰酸钾氧化马鞭草烯酮制备低蒎酮酸的影响,研究结果表明:控制原料与高锰酸钾的物质的量比1∶4,反应温度10℃,反应时间2h,乙酸与水溶液体积比10∶1,得到低蒎酮酸的收率77%.讨论了硅胶作为载体对此实验的影响,结果显示使用硅胶-高锰酸钾作为氧化剂,目标产物的产率可提高到81%.%Effects of reaction temperature, reaction time, potassium permanganate amount and ratio of acetic acid to water on preparation of pinononic aicd by oxidation of verbenone with potassium permanganate were investigated. The results showed that by keeping the molar ratio of (+)-verbenone to potassium permanganate as 1:4, reaction temperature 10℃ , reaction time 2 h and the ratio of acetic acid to water 10: 1, the yield of (+) -pinononic acid reached 77 %. Furthermore, the effect of silica gel as a support on this reaction was also discussed. The results showed that taking silica gel-supported potassium permanganate as oxidant, the yield of the target product could be increased to 81 %.

  10. 高锰酸钾活化麦草浆过氧化氢漂白的研究%A study on hydrogen peroxide bleaching of wheat straw pulp activated by potassium permanganate

    郭星; 张安龙; 罗清; 赵登

    2014-01-01

    探讨了高锰酸钾对Soda-AQ法麦草浆过氧化氢漂白的活化作用。结果表明,高锰酸钾是一种强氧化剂,在酸性条件下可与纸浆中的木素反应,经高锰酸钾预处理后的纸浆具有很好的可漂性。通过分析比较MQDP和MDQP两种漂白流程,得出在高锰酸钾用量为1.0%时,采用MDQP漂白流程,纸浆得率损失较小,白度最高。%The activation of potassium permanganate was investigated in Soda-AQ hydrogenperoxide bleaching of wheat straw pulp. The results show that potassium permanganate serves very well as a strong oxidant. Under acidic conditions, potassium permanganate reacts with lignin in pulp and having a good bleachability after potassium permanganate pretreatment. By comparing bleaching sequence of MQDP and MDQP, when the dosage of potassium permanganate is 1.0%, using bleaching sequence of MDQP, pulp yield loss is smaller and getting the highest whiteness.

  11. Reduction and Immobilization of Potassium Permanganate on Iron Oxide Catalyst by Fluidized-Bed Crystallization Technology

    Guang-Xia Li; Yao-Hui Huaug; Teng-Chien Chen; Yu-Jen Shih; Hui Zhang

    2012-01-01

    A manganese immobilization technology in a fluidized-bed reactor (FBR) was developed by using a waste iron oxide (i.e., BT-3) as catalyst which is a by-product from the fluidized-bed Fenton reaction (FBR-Fenton). It was found that BT-3 could easily reduce potassium permanganate (KMnO4) to MnO2. Furthermore, MnO2 could accumulate on the surface of BT-3 catalyst to form a new Fe-Mn oxide. Laboratory experiments were carried out to investigate the KMnO4-reduction mechanism, including the effect ...

  12. Kinetic spectrophotometric method for the determination of silymarin in pharmaceutical formulations using potassium permanganate as oxidant.

    Rahman, N; Khan, N A; Azmi, S N H

    2004-02-01

    A new simple and sensitive kinetic spectrophotometric method for the determination of silymarin in pure form and in pharmaceutical formulations is described. The method is based on the oxidation of the drug with potassium permanganate at pH 7.0 +/- 0.2. The reaction is followed spectrophotometrically by measuring the decrease in the absorbance at 530 nm. The calibration graph is linear in the range of 18-50 microg x m(-1). The method has been successfully applied to the determination of silymarin in pharmaceutical formulations. Statistical comparison of the results with the reference method shows excellent agreement and indicates no significant difference in accuracy and precision. PMID:15025178

  13. Mercury oxidation and adsorption characteristics of potassium permanganate modified lignite semi-coke

    Huawei Zhang; Jitao Chen; Peng Liang; Li Wang

    2012-01-01

    The adsorption characteristics of virgin and potassium permanganate modified lignite semi-coke (SC) for gaseous Hg0 were investigated in an attempt to produce more effective and lower price adsorbents for the control of elemental mercury emission.Brunauer-Emmett-Teller (BET) measurements,X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used to analyze the surface physical and chemical properties of SC,Mn-SC and Mn-H-SC before and after mercury adsorption.The results indicated that potassium permanganate modification had significant influence on the properties of semi-coke,such as the specific surface area,pore structure and surface chemical functional groups.The mercury adsorption efficiency of modified semi-coke was lower than that of SC at low temperature,but much higher at high temperature.Amorphous Mn7+,Mn6+ and Mn4+ on the surface of Mn-SC and Mn-H-SC were the active sites for oxidation and adsorption of gaseous Hg0,which oxidized the elemental mercury into Hg2+ and captured it.Thermal treatment reduced the average oxidation degree of Mnx+ on the surface of Mn-SC from 3.80 to 3.46.However,due to the formation of amorphous MnOx,the surface oxidation active sites for gaseous Hg0 increased,which gave Mn-H-SC higher mercury adsorption efficiency than that of Mn-SC at high temperature.

  14. The effect of high concentration potassium permanganate on protein contamination from metallic and synthetic rubber airway equipment.

    Laupu, W; Brimacombe, J

    2007-08-01

    We tested the hypothesis that supplementary cleaning using potassium permanganate 8 mg.l(-1) eliminates protein deposits from the reusable metallic and synthetic rubber airway equipment. Twenty Macintosh laryngoscope blades (surgical steel), 20 pairs of Magill's forceps (surgical steel) and 20 Guedel airways (synthetic rubber) were allocated to two groups for supplementary cleaning. In group A, the device was immersed in potassium permanganate 8 mg.l(-1). In group B (controls), the device was immersed in sterile water. The devices were then immersed in a protein staining solution, rinsed and the severity of staining was scored. In addition, the devices were inspected for tissue and then tested for occult blood. Protein contamination was lower in the potassium permanganate group for all devices (each device: p cleaning. Additionally, occult blood was detected on two pairs of forceps and a laryngoscope blade, which was not detected following supplementary cleaning. In the control group, no tissue was detected but one pair of forceps and two laryngoscope blades tested positive for occult blood before and after supplementary cleaning. We conclude that supplementary cleaning using potassium permanganate 8 mg.l(-1) eliminates protein deposits from re-usable metallic and synthetic rubber airway equipment. PMID:17635432

  15. Total Antioxidant Capacity of Serum Determined Using the Potassium Permanganate Agar Method Based on Serum Diffusion in Agar.

    Zhou, Ying; Zhang, Meijuan; Liu, Hui

    2015-01-01

    Objectives. To develop a new method for determining total antioxidants in serum and to evaluate the total antioxidant capacity of organisms. Design and Methods. Sodium hyposulfite (Na2S2O3) and serum were used to evaluate the linearity and precision of the potassium permanganate agar method. The area of serum diffusion in samples from 30 intensive care unit (ICU) patients compared with 44 healthy subjects was determined by the potassium permanganate agar method. Results. The linearity (R (2) in the linear experiment of Na2S2O3 was 0.994; R (2) in the linear experiment of serum was 0.987) and precision (coefficient of variation of area of high level serum diffusion within-run, between-run, and between-day and coefficient of variation of area of low serum diffusion within-run, between-run, and between-day were all less than 10%) were acceptable using the potassium permanganate agar method. Total antioxidants of serum between the ICU group and the healthy group were different (p = 0.002, two tailed). Conclusions. Total antioxidants in serum can be determined by the potassium permanganate agar method. The total antioxidant capacity of an organism can be evaluated by the amount of total antioxidants in serum. PMID:26347595

  16. Evaluation of potassium permanganate against an experimental subacute infection of Flavobacterium columnare in channel catfish, Icatlurus punctatus

    The efficacy of potassium permanganate (KMnO4) as a prophylactic and therapeutic treatment for subacute infection of Flavobacterium columnare was demonstrated in experimentally infected channel catfish, Ictalurus punctatus. Catfish experimentally infected with F. columnare to mimic a subacute infec...

  17. Comparative effects of copper sulfate or potassium permanganate on channel catfish concurrently infected with Flavobacterium columnare and Ichthyobodo necator

    An opportunistic study was conducted to determine the effects of two chemical therapeutants on channel catfish (CCF) Ictalurus punctatus concurrently infected Flavobacterium columnare and Ichthyobodo necator. Copper sulfate (CuSO4) and potassium permanganate (KMnO4) were investigated for their abil...

  18. Total Antioxidant Capacity of Serum Determined Using the Potassium Permanganate Agar Method Based on Serum Diffusion in Agar

    Ying Zhou

    2015-01-01

    Full Text Available Objectives. To develop a new method for determining total antioxidants in serum and to evaluate the total antioxidant capacity of organisms. Design and Methods. Sodium hyposulfite (Na2S2O3 and serum were used to evaluate the linearity and precision of the potassium permanganate agar method. The area of serum diffusion in samples from 30 intensive care unit (ICU patients compared with 44 healthy subjects was determined by the potassium permanganate agar method. Results. The linearity (R2 in the linear experiment of Na2S2O3 was 0.994; R2 in the linear experiment of serum was 0.987 and precision (coefficient of variation of area of high level serum diffusion within-run, between-run, and between-day and coefficient of variation of area of low serum diffusion within-run, between-run, and between-day were all less than 10% were acceptable using the potassium permanganate agar method. Total antioxidants of serum between the ICU group and the healthy group were different (p=0.002, two tailed. Conclusions. Total antioxidants in serum can be determined by the potassium permanganate agar method. The total antioxidant capacity of an organism can be evaluated by the amount of total antioxidants in serum.

  19. Kinetic determination of acarbose and miglitol in bulk and pharmaceutical formulations using alkaline potassium permanganate.

    Ibrahim, F A; Ali, F A; Ahmed, S M; Tolba, M M

    2007-03-01

    A simple and sensitive kinetic spectrophotometric method was established for the determination of acarbose and miglitol in bulk and in their pharmaceutical preparations using alkaline potassium permanganate as an oxidizing agent. The method involves determination of acarbose and miglitol by kinetic studies of their oxidation at room temperature for a fixed time of 15 minutes for acarbose and 25 minutes for miglitol. The absorbance of the colored manganate ion was measured at 610 nm. Alternatively, the kinetic decrease in the absorbance of permanganate upon addition of the studied drugs at 525 nm was also used. The absorbance concentration plot was rectilinear over the concentration range of 4-20 and 1-10 μg/ml for acarbose and miglitol, respectively. The detection limits were 0.189 and 0.089 μg/ml at 610 nm and 0.081 and 0.179 μg/ml at 525 nm for acarbose and miglitol respectively. The method was successfully applied for the determination of these drugs in their dosage forms. The results obtained were in good agreement with those obtained with the reference methods. PMID:23675017

  20. Effect of the potassium permanganate during papaya fruit ripening: Ethylene production

    Corrêa, S. F.; Filho, M. B.; da Silva, M. G.; Oliveira, J. G.; Aroucha, E. M. M.; Silva, R. F.; Pereira, M. G.; Vargas, H.

    2005-06-01

    The effect of potassium permanganate (KMnO4) on the ripening process of papaya fruits by monitoring the ethylene emission rates is reported. The ethylene emission was monitored by a photoacoustic spectrometer. Two experimental conditions were applied, being one of them just putting the fruit alone inside the sampling chamber and the second, modifying the atmosphere by the presence of KMnO4. The use of the ethylene absorber reduces the autocatalytic process of ethylene during papaya fruit ripening. For 20 g of KMnO4 the maximal intensity of the ethylene emission decreases by a factor two. Using the same amount of KMnO4, a reduction of about 2.2% in the concentration of ethylene for a mixture of 1ppmv of ethylene in synthetic air was observed.

  1. Effects of chlorine content and position of chlorinated phenols on their oxidation kinetics by potassium permanganate

    2003-01-01

    Chlorine content and position of chlorinated phenols have many significant effects on the reactivity of oxido-reduction. The effects of chlorine content and position of chlorinated phenols on their oxidation kinetics by potassium permanganate were evaluated through different kinetics studies. Since chlorine was an electron withdrawing atom, the substitution of chlorine on the aromatic ring decreased the oxidation rate constant by σ-electron withdrawing conductive effect; at the same time, the substitution of chlorine at ortho or para position on the aromatic ring increased the oxidation rate constant by π-electron donating conjugative effect, and the conjugative effect could counteract the negative impact of the conductive effect to some extent. On the other hand, the substitution of chlorine at ortho position on the aromatic ring decreased the oxidation rate constant by steric hindrance effect. The oxidation rate constants of phenol and chlorinated phenols studied decreased as follow order: 4-chlorophenol>2,4-dichlorophenol>phenol>2,6-dichlorophenol.

  2. In vitro and in vivo evaluation of potassium permanganate treatment efficacy for the control of acute experimental infection of flavobacterium columnare in channel catfish

    An experimental trial was performed to evaluate the efficacy of potassium permanganate against an acute and systemic experimental infection of Flavobacterium columnare in channel catfish, Ictalurus punctatus. The infection was produced by waterborne exposure to the bacteria after mechanical cutaneo...

  3. 高锰酸钾氧化安息香的实验研究%Study on the oxidation reaction of benzoin by potassium permanganate

    黄玲; 陶清; 王冬明; 施少敏

    2013-01-01

    研究了不同条件下,高锰酸钾对安息香的氧化规律.当反应条件控制为2.1 g(0.01 mol)安息香,1.5g(0.01 mol)高锰酸钾,15 mL冰醋酸,反应温度85~95℃回流1.5h,高锰酸钾能将安息香氧化裂解为苯甲酸.当反应条件为4.32 g(0.02 mol)安息香,1.5 g(0.01 mol)高锰酸钾,6 g(0.11 mol)碱A,12 mL水,反应温度在80~90℃,高锰酸钾将安息香氧化生成二苯乙二酮;碱量增加至12 g时,二苯乙二酮重排为二苯乙醇酸,产率高达98%.%Studied under different conditions,potassium permanganate oxidation of benzoin law.The oxidation reaction of benzoin by potassium permanganate is described.When the reaction conditions is controlled to be 2.1 g (0.01 mol) benzoin,1.5 g (0.01 mol) of potassium permanganate,15 mL of glacial acetic acid at reflux for 1.5 h at 85 ~ 95 ℃,benzoin can be directly oxidized and cleavaged to benzoic acid.When the reaction condition is controlled to 4.32 g (0.02 mol) of benzoin,1.5 g (0.01 mol) of potassium permanganate,6 g (0.11 mol) base A,12 mL water at 80 ~ 90 ℃,benzoin can be oxidized to benzil.When the amount of base increases to 12 g,benzilic acid is obtained in 98% yield from the rearrangement reaction of benzil.

  4. Potassium permanganate and tetraethylammonium chloride are a safe and effective substitute for osmium tetroxide in solid-phase fluorescent chemical cleavage of mismatch.

    Roberts, E; DEEBLE, V. J.; Woods, C. G.; Taylor, G R

    1997-01-01

    Whilst chemical cleavage of mismatch (CCM) detects all point mutations in DNA, its widespread use has been hampered by the complex multistage methodology and the need for toxic chemicals, in particular osmium tetroxide. Here we show that osmium tetroxide can be replaced by potassium permanganate, giving the same spectrum of mutation detection, but with greater sensitivity. The use of potassium permanganate is compatible with solid phase capture and fluorescent detection, giving a safer method...

  5. Oxidation of volatile organic compound vapours by potassium permanganate in a horizontal permeable reactive barrier under unsaturated conditions: experiments and modeling

    Ghareh Mahmoodlu, Mojtaba

    2014-01-01

    In this research we evaluated the potential of using solid potassium permanganate to create a horizontal permeable reactive barrier (HPRB) for oxidizing VOC vapours in the unsaturated zone. We have performed batch experiments, short column, and long column experiments, and have fully analyzed the data. In the batch experiments, we investigated the ability of potassium permanganate to fully oxidize three selected target compounds, namely, trichloroethylene (TCE), toluene, and ethanol. We also ...

  6. 高锰酸钾除臭技术的试验研究%Experimental Study on Potassium Permanganate Deodorization Technology

    袁志宇; 李学强; 张辉

    2009-01-01

    通过对高锰酸钾除臭机理的分析,以及对单独投加高锰酸钾、高锰酸钾与活性炭联用这两种处理工艺的试验研究,考察了高锰酸钾的投加量、接触时间、pH对出水嗅阈值的影响.结果表明,当高锰酸钾的投加量为1.0 mr/L、接触时间为30 min、pH值为7.5~8.0时可取得很好的除臭效果;高锰酸钾与粉末活性炭联用对嗅味的去除效果要优于单独使用高锰酸钾的,而且还可以有效解决大量投加高锰酸钾导致的色度超标问题.%Through the analysis of potassium permanganate deodorization mechanism, and the ex-perimental study on the single use of potassium permanganate and combination of potassium permanganate and powered activated carbon, the influence of potassium permanganate dosage, contact time and pH val-ue on effluent TON was investigated. The results show that the deodorization effect is excellent when po-tassium permanganate dosage is 1.0 mg/L, contact time is 30 min and pH is 7.5 to 8.0. The deodoriza-tion effect of the combination of potassium permanganate and powered activated carbon is better than that of the single use of potassium permanganate, and the excessive color problem brought from potassium per-manganate can be solved.

  7. Thermal Analysis of Whole Bacterial Cells Exposed to Potassium Permanganate Using Differential Scanning Calorimetry: a Biphasic Dose-Dependent Response to Stress

    Marina K. Abuladze; Victor M. Sokhadze; Emma N. Namchevadze; Kiziria, E.; Leila V. Tabatadze; Lejava, Lia V.; Sh. Gogichaishvili; Bakradze, Nugzar B.

    2009-01-01

    Differential scanning calorimetry (DSC) was applied to estimate the impact of the toxic oxidant potassium permanganate (PM) on the intracellular structural and functional alterations at whole cell level using soil bacteria Arthrobacter oxydans as a model culture. Differential scanning calorimetry (DSC) was applied in order to estimate the impact of the toxic oxidant potassium permanganate (PM) on the intracellular structural and functional alterations at the whole cell level using the soil b...

  8. An investigation of the oxidative potential of potassium permanganate and chlorine dioxide during the oxidation of reduced manganese

    Hair, David Hayne

    1987-01-01

    This project determined the thermodynamic potentials for various reactions between reduced manganese (Mn+2), manganese oxide (MnO2(s)), chlorine dioxide (C102), and potassium permanganate (KMnO4). Based on these findings, laboratory analyses were performed to determine if these reactions would occur under simulated water treatment plant conditions. In addition, a speciation procedure was developed to quantify the various species of manganese and chlorine dioxide present in a...

  9. Potassium permanganate elicits a shift of the external fish microbiome and increases host susceptibility to columnaris disease

    Mohammed, Haitham H.; Arias, Covadonga R

    2015-01-01

    International audience The external microbiome of fish is thought to benefit the host by hindering the invasion of opportunistic pathogens and/or stimulating the immune system. Disruption of those microbial communities could increase susceptibility to diseases. Traditional aquaculture practices include the use of potent surface-acting disinfectants such as potassium permanganate (PP, KMnO4) to treat external infections. This study evaluated the effect of PP on the external microbiome of ch...

  10. Novel application of vacuum sealing drainage with continuous irrigation of potassium permanganate for managing infective wounds of gas gangrene.

    Hu, Ning; Wu, Xing-Huo; Liu, Rong; Yang, Shu-Hua; Huang, Wei; Jiang, Dian-Ming; Wu, Qiang; Xia, Tian; Shao, Zeng-Wu; Ye, Zhe-Wei

    2015-08-01

    Traumatic gas gangrene is a fatal infection mainly caused by Clostridium perfringens. It is a challenge to manage gas gangrene in open wounds and control infection after debridement or amputation. The aim of the present study was to use vacuum sealing drainage (VSD) with continuous irrigation of potassium permanganate to manage infective wounds of gas gangrene and observe its clinical efficacy. A total of 48 patients with open traumatic gas gangrene infection were included in this study. Amputations were done for 27 patients, and limb salvage procedures were performed for the others. After amputation or aggressive debridement, the VSD system, including polyvinyl alcohol (PVA) foam dressing and polyurethane (PU) film, with continuous irrigation of 1:5000 potassium permanganate solutions, was applied to the wounds. During the follow-up, all the patients healed without recurrence within 8-18 months. There were four complications. Cardiac arrest during amputation surgery occurred in one patient who suffered from severe septic shock. Emergent resuscitation was performed and the patient returned to stable condition. One patient suffered from mixed infection of Staphylococcal aureus, and a second-stage debridement was performed. One patient suffered from severe pain of the limb after the debridement. Exploratory operation was done and the possible reason was trauma of a local peripheral nerve. Three cases of crush syndrome had dialysis treatment for concomitant renal failure. In conclusion, VSD can convert open wound to closed wound, and evacuate necrotic tissues. Furthermore, potassium permanganate solutions help eliminate anaerobic microenvironment and achieve good therapeutic effect on gas gangrene and mixed infection. VSD with continuous irrigation of potassium permanganate is a novel, simple and feasible alternative for severe traumatic open wounds with gas gangrene infection. PMID:26223928

  11. Effects of Potassium Permanganate on Cough Movement of Carassius auratus%高锰酸钾对鲫鱼咳嗽运动的影响

    陈立伟; 谢松; 刘龙; 张锋

    2011-01-01

    [ Objective ] To observe the effects of potassium permanganate on respiratory rate and cough frequency of Carassius auratus ( C. auratus ) in different conditions. [ Method ] According to the simple factor design of experiment, the respiratory rate and cough frequency of C. auratus were observed and recorded. The factors included concentration of potassium permanganate, temperature,time and pH. [ Result] The respiratory rate and cough frequency of C. auratus were increased and then decreased with the increasing concentrations of potassium permanganate,rising of temperature,prolongation of treatment time. The respiratory function of C. auratus was the best in the pH = 7.0 condition. The strong acid and alkali caused the fish lesions and inhibited the respiratory function of C. auratus. [ Conclusion ] The potassium permanganate at different concentrations may impact the cough frequency and respiratory rate of C. auratus.%[目的]观察不同浓度的高锰酸钾对鲫鱼呼吸运动和咳嗽运动的影响.[方法]采用单因子试验设计和直接观察记录法,研究不同浓度的高锰酸钾在不同温度、不同作用时间和不同pH条件下对鲫鱼呼吸运动和咳嗽运动的影响.[结果]鲫鱼的呼吸频率和咳嗽反应频率随着高锰酸钾溶液浓度的升高、温度的升高和处理时间的延长而增大,但刺激务件升高到一定数值后,鲫鱼的呼吸机能受到影响,咳嗽反应频率和呼吸频率又开始变小;中性环境下鲫鱼的呼吸机能处于最佳状态,强酸强碱会使鱼体发生病变,严重抑制呼吸机能.[结论]不同浓度的高锰酸钾在不同条件施用时,均对鲫鱼的呼吸运动和咳嗽运动产生一定的影响.

  12. Determination of Biotin in Pharmaceutical Formulations by Potassium Permanganate-luminol-CdTe Nanoparticles Chemiluminescence System

    TRAORE Zoumana Sékou; SU Xing-guang

    2012-01-01

    A sensitive flow-injection chemiluminescence method was developed for the determination of biotin in the pharmaceutical formulations.The affinity between avidin and biotin was used to adsorb biotin on the polystyrene,with subsequent quantification of biotin based on its ability to enhance the chemiluminescence(CL) signal generated by the redox reaction of potassium permanganate-luminol-CdTe nanoparticles CL system.The investigations prove that apart from 3-aminophthalate,the CdTe quantum dots(QDs) play both catalytic and emitter roles.Under optimum conditions,the linear range for the determination of biotin was 0.01-25 ng/mL with a detection limit of 7.3×10-3ng/mL(S/N=3).The relative standard deviation of 5 ng/L biotin was 2.06%(n=7).The proposed method was used to determine the biotin concentration in the pharmaceutical formulations and the recovery was between 96.4% and 104%.The proposed method is simple,convenient,rapid and sensitive.

  13. Reduction and Immobilization of Potassium Permanganate on Iron Oxide Catalyst by Fluidized-Bed Crystallization Technology

    Guang-Xia Li

    2012-03-01

    Full Text Available A manganese immobilization technology in a fluidized-bed reactor (FBR was developed by using a waste iron oxide (i.e., BT-3 as catalyst which is a by-product from the fluidized-bed Fenton reaction (FBR-Fenton. It was found that BT-3 could easily reduce potassium permanganate (KMnO4 to MnO2. Furthermore, MnO2 could accumulate on the surface of BT-3 catalyst to form a new Fe-Mn oxide. Laboratory experiments were carried out to investigate the KMnO4-reduction mechanism, including the effect of KMnO4 concentration, BT-3 dosage, and operational solution pH. The results showed that the pH solution was a significant factor in the reduction of KMnO4. At the optimum level, pHf 6, KMnO4 was virtually reduced in 10 min. A pseudo-first order reaction was employed to describe the reduction rate of KMnO4.

  14. 高锰酸盐指数测定中影响因素的探讨%Factors impacting he determination process of potassium permanganate index

    王萍

    2012-01-01

    通过对酸性法测定高锰酸盐指数全过程的分析,结果表明水样静置时间、水样浓度、水浴时间、反应温度等因素影响测定结果。文章总结了测定过程中需要注意的几个关键环节,确保获得准确数据。%Through the analysis of the whole process of determination of potassium permanganate index using acid method,this paper will show the impact of aside time of water sample,density of water sample,water bath time and reaction tempurature and so on,against the determination results.And this paper will summarize some key steps during the process of determination of potassium permanganate index,which need extra attention in order to get accurate results.

  15. Flow injection chemiluminescence determination of cephalosporins in pharmaceutical preparations using tris (2,2'-bipyridyl) ruthenium (II)-potassium permanganate system

    A flow injection (FI) method using the tris(2,2'-bipyridyl) ruthenium(II) [Ru(bpy)32+]-potassium permanganate chemiluminescence(CL) was developed for the rapid and sensitive determination of cephalosporins such as cefoxitin, cefazolin, cephalexin, cefadroxil, cefaclor and cefoperazone. The method is based on the CL reaction of cephalosporins and Ru(bpy)32+ with potassium permanganate in the presence of perchloric acid, catalyzed by Mn(II). Under the optimum conditions, the calibration curves are linear over the range 0.10-12.0 μg ml-1 for cefoxitin, 0.10-10.0 μg ml-1 for cefoperazone and 0.10-15.0 μg ml-1 for cefazolin, cephalexin, cefadroxil, and cefaclor, respectively. The limits of detection (3σ) are 0.03 μg ml-1 for cefoxitin and cefadroxil, 0.06 μg ml-1 for cefoperazone and 0.08 μg ml-1 for cefazolin, cephalexin and cefaclor, respectively. The method was successfully applied to the determination of cefoxitin, cefazolin, cephalexin and cefadroxil in pharmaceutical formulations with a sample throughput of 90 h-1. There were no interference effects from some common excipients used in pharmaceutical preparations

  16. The influence of precipitate formation on the chemical oxidation of TCE DNAPL with potassium permanganate

    West, Michael R.; Grant, Gavin P.; Gerhard, Jason I.; Kueper, Bernard H.

    2008-02-01

    A three-dimensional two-phase flow model is coupled to a non-linear reactive transport model to study the efficacy of potassium permanganate treatment on dense, non-aqueous phase liquid (DNAPL) source removal in porous media. A linear relationship between the soil permeability ( k) and concentration of manganese dioxide precipitate ([MnO 2(s)]), k = ko + Srind [MnO 2(s)], is utilized to simulate nodal permeability reductions due to precipitate formation. Using published experimental column studies, an Srind = -5.5 × 10 -16 m 2 L/mg was determined for trichloroethylene (TCE) DNAPL. This Srind was then applied to treatment simulations on three-dimensional TCE DNAPL source zones comprising either DNAPL at residual saturations, or DNAPL at pooled saturations. DNAPL dissolution without oxidation treatment, simulated using equilibrium and the Nambi and Powers [Nambi I, Powers S. Mass transfer correlations for non-aqueous phase liquid dissolution from regions with high initial saturations. Water Resour Res 2003;39(2):1-11, SBH 4] mass transfer expression, required 31 and 36 years, respectively, to eliminate the residual source zone. For equilibrium dissolution with continuous treatment and no precipitate influence ( Srind = 0 m 2 L/mg), the residual source zone was removed after 11 years. However, when considering the precipitate influence (i.e., Srind = -5.5 × 10 -16 m 2 L/mg), 21 years of treatment were necessary to remove the DNAPL. When considering pulse treatments of 1 and 2 years duration followed by only dissolution, approximately 36 and 38 years, respectively, were required before the source zone was depleted, suggesting that there is no benefit to pulse treatment. Similar trends were observed when allowing 10 years of dissolution prior to treatment initiation. The treatment behaviour of the pooled TCE source, while slightly more efficient than the residual saturation source, was similar. Based on simulation findings, the precipitate (rind) formation

  17. Effect of calcium ion on reaction of potassium permanganate and natural organic matter%钙离子对高锰酸钾与天然有机物反应的影响

    王晓荣; 陈忠林; 王斌远; 沈吉敏

    2011-01-01

    利用单宁酸做为天然有机物的代表研究了高锰酸钾与天然有机物的反应,考察了钙离子及钙离子和高锰酸钾不同投加顺序的影响及机理,并利用FTIR对反应进行了光谱学研究.结果表明,高锰酸钾与单宁酸反应生成可溶性分子,钙离子和高锰酸钾不同投加顺序对二者反应有一定的影响,先投加钙离子再投加高锰酸钾,溶液UV276.5的降低较多一些,DOC去除率较高一些,反应较充分.钙离子存在时单宁酸与高锰酸钾反应后生成大量固体成分,FTIR光谱的结果证实了此作用现象和机理.因此钙离子和有机物形成络合物,影响高锰酸钾与水中天然有机物的反应.%The reaction of potassium permanganate and natural organic matter was investigated. Effect of calcium ion and different dosing order of calcium and potassium permanganate were studied. FTIR spectra was employed for further spectroscopy study. Results showed that the reaction product of potassium permanganate and tannic acid were some soluble organic material, different dosing order of calcium and potassium permanganate has effect on the reaction. The addition of potassium permanganate after calcium presented the result of lower UV276.5 and DOC. FTIR spectra results showed that calcium ion increases the quantity of solid product. Consequently, it indicated that calcium ion chelates with organic matter and has important effect on the reaction of potassium permanganate and natural organic material.

  18. 影响高锰酸钾标准溶液制备准确性的因素探析%Factors Influencing the Preparation Accuracy of the Potassium Permanganate Standard Solution

    张同英; 王彩霞; 尚杰峰

    2014-01-01

    依据GB601-2002及HG/T2843-1997的技术要求,探析了溶液的酸度、水质、空气及光照等因素对高锰酸钾标准溶液稳定性的影响,解决了影响标定准确度的条件及人为因素,使得制备的高锰酸钾标准溶液室温下可以保存2个月,浓度基本不变。%Factors such as the solution acid degree ,water quality , air and light make great influences on the stability and titration reaction of the standard Potassium permanganate solution. The results indicate that after solving these influence factors the Potassium permanganate standard solution can be preserved for 2 months under room temp.

  19. Spectrophotometric methods for the determination of ampicillin by potassium permanganate and 1-chloro-2,4-dinitrobenzene in pharmaceutical preparations

    Aftab Aslam Parwaz Khan; Ayaz Mohd; Shaista Bano; K. S. SIDDIQI; Abdullah Mohammed Asiri

    2015-01-01

    Two simple and sensitive kinetic methods for the determination of ampicillin (AMP) are described. The first method is based on kinetic investigation of the oxidation reaction of the drug with alkaline potassium permanganate at room temperature for a fixed time of 25 min. The absorbance of the colored manganate ions is measured at 610 nm. The second method is based on the reaction of AMP with 1-chloro-2,4-dinitrobenzene (CDNB) in the presence of 0.1 mol L−1 sodium bicarbonate. Spectrophotometr...

  20. Application of potassium permanganate to spectrophotometric assay of metoclopramide hydrochloride in pharmaceuticals

    Devi, O. Zenita; Basavaiah, K.; Vinay, K. B.

    2012-01-01

    Two simple, sensitive, and cost-effective spectrophotometric methods are described for the determination of metoclopramide hydrochloride (MCP) in pharmaceutical dosage forms. The methods are based on a redox reaction between MCP and KMnO4 in alkaline and acid media. Direct spectrophotometry (method A) involves treating MCP with permanganate in an NaOH medium and measuring a bluish green product at 610 nm. In indirect spectrophotometry (method B), MCP is treated with a fixed concentration of KMnO4 in an H2SO4 medium, and after a specified time, the unreacted KMnO4 is measured at 545 nm. Under optimum assay conditions, Beer's law is obeyed over the ranges of 0.75-12.0 and 2.5-30.0 g/ml for methods A and B, respectively. Molar absorptivity values are calculated to be 2.33•104 and 2.66•104 l/mol cm for methods A and B, respectively, and corresponding Sandell's sensitivity values are 0.015 and 0.013 g/cm2. Limits of detection (LOD) and quantification (LOQ) are also reported. The applicability of the developed methods was demonstrated by the determination of MCP in tablet and injection forms. The accuracy and reliability of the proposed methods were further ascertained by recovery studies via standard addition technique.

  1. 山羊绒纱线中性KMnO4防缩工艺研究%The study on shrink-resistance of cashmere yarn with potassium permanganate

    杨丹; 李龙; 王卫

    2011-01-01

    利用KMnO4在饱和NaCl溶液中的强氧化性对山羊绒纱线进行正交氧化处理,研究山羊绒纱线的防缩工艺。以纱线断裂强力、毡缩率和白度为测试指标,分析温度、时间、KMnO4用量和助剂等因素对处理后山羊绒纱线各项性能的影响。通过正交试验确定了山羊绒纱线防缩处理最佳工艺为:温度40℃,处理时间30min,KMnO4质量分数为2%(按织物质量计算的质量分数),助剂浓度为6mL/L。%Potassium permanganate in saturated NaCl solution is used to shrink-proofing treatment cashmere yams. The breaking strength and felt shrinkage rate of the treated cashmere yarns were tested, and the effects of treatment temperature, time, the content of potassium permanganate and additives concentration on all the above properties of the cashmere yarn were analyzed. By an orthogonal test and comprehensive analyze obtained the optimal craft of cashmere yarns acidic potassium permanganate shrink processing is : the temperature was 40 ℃, the processing time was 30 min, potassium permanganate concentration was 2% ( o. w. f) , additives content was 6 mL/L.

  2. Present Situation of Production Technology and Prospect of Potassium Permanganate%中国高锰酸钾生产工艺现状及展望

    王运正

    2012-01-01

    It mainly introduces the potassium permanganate in the method of industrial production at home and abroad,including a comparation of production process, through the technology market of analysis to point out the contrast and potassium permanganate in industrial development direction.%主要介绍了高锰酸钾工业生产方法,并对国内外现有的生产工艺进行了介绍和对比,通过技术对比和市场分析指出了高锰酸钾工业的发展方向.

  3. 对自制高锰酸钾纯度测定方法的探讨%The Exploration of the Measuring Method of the Purity of Potassium Permanganate

    石少明; 梁宇宁

    2012-01-01

    Obtained an optimum measuring method of the purity of potassium permanganate by determin- ing the purity of several potassium permanganate. And the measuring method is appropriate for experiment in freshman. The optimum measuring method is as follows: sodium oxalate was used as primary standard to standardize potassium permanganate solution in strong acidic condition (1 mol·L-1H2SO4), the temperature of titration control in 55- 85℃%通过测定几种自制样品KMnO。的纯度,总结出适合于“大一”新生实验的测定KMnO4纯度的方法。在酸性(1m01.L^-1H2SO4)条件下,以草酸钠为基准物标定所配制样品KMnO4溶液的浓度,温度控制在55。85℃。从而计算出KMnO4的含量。

  4. Acute Toxicities of Potassium Permanganate, Formalin, and Lugol's Iodine Solution to a Marine Ciliate,Pleuronema coronatum ( Ciliophora, Scuticociliatida)

    QIU Yantao; SONG Weibo

    2002-01-01

    Acute toxicities of potassium permanganate, formalin, and Lugol's iodine solution to a commonly occurred ma-rine ciliate Pleuronema coronatum (Ciliophora, Scuticociliatida) were measured. Linear regression analysis of the resultshighlighted the close relationships between doses of the medicines and mortalities of the organisms, thus providing a capabili-ty to predict toxicity effects from the dose. Toxic effects of the medicines on the ciliates were described in the present paper,and the median lethal concentrations (LC50 values) were given. Results of measurements indicated that 2 h-LC50 and 12 h-LC50 values of formalin on P. coronatum were 59.00 × 10-6 and 43.57 × 10 6, while those of Lugol's solutions were 90.13 and67.84 × 10 6 respectively. The tolerance of P. coronatum to formalin is apparently lower than that to Lugol' s iodine solutionand potassium permanganate is a suitable medicine to kill ciliates in short time.

  5. 高锰酸盐复合药剂在水厂水处理中的应用%Application of Potassium Permanganate Composite Chemicals in Water Treatment

    杨勇其

    2014-01-01

    在水厂水处理生产期间,单独投加高锰酸盐复合药剂或者高锰酸钾药剂,然后收集生产试验过程中原水水质、出厂水和生产成本等生产数据,分析对比两种药剂在自来水工艺流程中的优点和不足之处。试验中,高锰酸盐复合药剂和高锰酸钾对出厂水各项指标效果差别不大,但高锰酸盐复合药剂在原材料成本上占有优势。%During the production of water treatment , separate adding permanganate composite chemicals or potassium permanganate , then collecting the production data in raw water , finished water and cost of production , the advantages and disadvantages of two kinds of chemicals were comparative analyzed.Potassium permanganate composite and potassium permanganate factory on the water indicators basic effect difference was not big , and permanganate composite chemicals had the advantage in the cost saving of raw materials.

  6. Influence of humic acids of different origins on oxidation of phenol and chlorophenols by permanganate

    He Di, E-mail: hedy1997@hotmail.com [State Key Lab of Urban Water Resource and Environment (HIT), Harbin Institute of Technology, Harbin (China); Guan Xiaohong, E-mail: hitgxh@126.com [State Key Lab of Urban Water Resource and Environment (HIT), Harbin Institute of Technology, Harbin (China); Ma Jun, E-mail: majun@hit.edu.cn [State Key Lab of Urban Water Resource and Environment (HIT), Harbin Institute of Technology, Harbin (China); Yang Xue, E-mail: yangxue1_ok@163.com [State Key Lab of Urban Water Resource and Environment (HIT), Harbin Institute of Technology, Harbin (China); Cui Chongwei, E-mail: cuichongwei1991@126.com [State Key Lab of Urban Water Resource and Environment (HIT), Harbin Institute of Technology, Harbin (China)

    2010-10-15

    The influences of humic acids (HAs) of different origins, including two commercial HAs, three soil HAs and one aquatic HA, on phenols oxidation by permanganate were studied. The apparent second-order rate constants of 2-chlorophenol (2-CP)/phenol oxidation by permanganate in the presence of HAs at pH 7 followed the order of commercial HA (Shanghai) > soil HAs > commercial HA (Fluka) > aquatic HA. Moreover, the commercial HA (Shanghai) could accelerate the oxidation of different chlorophenols (CP) significantly under neutral condition. The FTIR analysis demonstrated greater content of C=C moieties and less amount of carboxylate, aliphatic groups and polysaccharide-like substances in soil HAs than in aqueous HA, suggesting that the increase of aromaticity in HA was beneficial to the oxidation of phenols by permanganate. The apparent second-order rate constants of 2-CP/phenol oxidation by permanganate in the presence of HAs correlated well with specific visible absorption (SVA) at 665 nm of HAs. High positive correlation coefficients (R{sup 2} > 0.75) implied that {pi}-electrons of HA strongly influenced the reactivity of 2-CP/phenol towards permanganate oxidation, which agreed well with positive correlation between Fluorescence Regional Integration (FRI) and the apparent second-order rate constants. The {pi}-{pi} interaction between HAs and phenols, the steric hindrance effect and the dissociation of phenols may affect the oxidation of phenols by permanganate in the presence of HA at pH = 7.0.

  7. Influence of humic acids of different origins on oxidation of phenol and chlorophenols by permanganate

    The influences of humic acids (HAs) of different origins, including two commercial HAs, three soil HAs and one aquatic HA, on phenols oxidation by permanganate were studied. The apparent second-order rate constants of 2-chlorophenol (2-CP)/phenol oxidation by permanganate in the presence of HAs at pH 7 followed the order of commercial HA (Shanghai) > soil HAs > commercial HA (Fluka) > aquatic HA. Moreover, the commercial HA (Shanghai) could accelerate the oxidation of different chlorophenols (CP) significantly under neutral condition. The FTIR analysis demonstrated greater content of C=C moieties and less amount of carboxylate, aliphatic groups and polysaccharide-like substances in soil HAs than in aqueous HA, suggesting that the increase of aromaticity in HA was beneficial to the oxidation of phenols by permanganate. The apparent second-order rate constants of 2-CP/phenol oxidation by permanganate in the presence of HAs correlated well with specific visible absorption (SVA) at 665 nm of HAs. High positive correlation coefficients (R2 > 0.75) implied that π-electrons of HA strongly influenced the reactivity of 2-CP/phenol towards permanganate oxidation, which agreed well with positive correlation between Fluorescence Regional Integration (FRI) and the apparent second-order rate constants. The π-π interaction between HAs and phenols, the steric hindrance effect and the dissociation of phenols may affect the oxidation of phenols by permanganate in the presence of HA at pH = 7.0.

  8. Oxidation of volatile organic compound vapours by potassium permanganate in a horizontal permeable reactive barrier under unsaturated conditions: experiments and modeling

    Ghareh Mahmoodlu, Mojtaba

    2014-01-01

    In this research we evaluated the potential of using solid potassium permanganate to create a horizontal permeable reactive barrier (HPRB) for oxidizing VOC vapours in the unsaturated zone. We have performed batch experiments, short column, and long column experiments, and have fully analyzed the da

  9. OXIDATION OF DNAPL MIXTURES USING POTASSIUM PERMANGANATE WITH A PHASE-TRANSFER-CATALYST:KINETIC RESULTS FROM A DIGITAL PHOTOGRAPHIC MONITORING METHOD

    There has been considerable interest in the use of potassium permanganate for the in-situ destruction of chlorinated solvernt.At the present stage of development, significant opportunities remain in increasing the overall efficiency of flooding schemes and in speeding up the oxi...

  10. Evaluation of the therapeutic effect of potassium permanganate at early stages of an experimental acute infection of Flavobacterium columnare in channel catfish (Ictalurus punctatus)

    The efficacy of potassium permanganate (KMnO4) against early stages of an experimental acute infection of Flavobacterium columnare in channel catfish (Ictalurus punctatus) was evaluated. Fish were experimentally challenged, by waterborne exposure for 2 h to F. columnare after cutaneous abrasion, an...

  11. Kinetics of ofloxacin oxidation by potassium permanganate%高锰酸钾氧化氧氟沙星的动力学研究

    徐勇鹏; 万晓辉; 王在刚

    2012-01-01

    To discover the kinetic law of ofloxacin oxidation by potassium permanganate in aquatic environment,this article studied the rate constant of reaction and the reaction influencing factors such as potassium permanganate dosage,pH value and temperature.The results showed that the oxidation reaction of ofloxacin by potassium permanganate in aqueous solution followed second-order kinetics.When potassium permanganate was excessive,pseudo-first-order rate and concentration of potassium permanganate followed the equation: Kobs=0.000 092-0.002 72.The second-order reaction rate constant was influenced by pH values.The rate of ofloxacin oxidation by potassium permanganate increased with the increasing of temperature,and the reaction activation energy Ea=30.463 3 kJ·mol-1,which revealed that the oxidation reaction between ofloxacin and potassium permanganate was feasible under usual water treatment condition.%为探讨氧氟沙星在水环境中氧化降解的趋势,采用水处理常用的氧化剂高锰酸钾,研究氧氟沙星被高锰酸降解的效能和动力学规律,并讨论高锰酸钾浓度、pH、温度等因素对反应速率常数的影响.结果表明,高锰酸钾对氧氟沙星的氧化过程符合二级反应动力学模型,在高锰酸钾过量的情况下,氧化反应的假一级反应动力学常数Kobs=0.000 092[KMnO4]-0.002 72.pH对反应速率常数有显著影响.温度对反应速率也有影响,随着温度的升高,高锰酸钾氧化氧氟沙星的反应速率增加,高锰酸钾氧化氧氟沙星的反应表观活化能Ea=30.463 3 kJ·mol-1,该反应在一般水处理条件下较容易发生。

  12. Three-dimensional density-dependent flow and multicomponent reactive transport modeling of chlorinated solvent oxidation by potassium permanganate

    Henderson, Thomas H.; Mayer, K. Ulrich; Parker, Beth L.; Al, Tom A.

    2009-05-01

    A popular method for the treatment of aquifers contaminated with chlorinated solvents is chemical oxidation based on the injection of potassium permanganate (KMnO 4). Both the high density (1025 gL - 1 ) and reactivity of the treatment solution influence the fate of permanganate (MnO 4) in the subsurface and affect the degree of contaminant treatment. The MIN3P multicomponent reactive transport code was enhanced to simulate permanganate-based remediation, to evaluate the pathways of MnO 4 utilization, and to assess the role of density contrasts for the delivery of the treatment solution. The modified code (MIN3P-D) provides a direct coupling between density-dependent fluid flow, solute transport, contaminant treatment, and geochemical reactions. The model is used to simulate a field trial of TCE oxidation in a sandy aquifer that is underlain by an aquitard. Three-dimensional simulations are conducted for a coupled reactive system comprised of ten aqueous components, two mineral phases, TCE (dissolved, adsorbed, and NAPL), reactive organic matter, and including ion exchange reactions. Model parameters are constrained by literature data and a detailed data set from the field site under investigation. The general spatial and transient evolution in observed concentrations of the oxidant, dissolved TCE, and reaction products are adequately reproduced by the simulations. The model elucidates the important role of density-induced flow and transport on the distribution of the treatment solution into NAPL containing regions located at the aquifer-aquitard interface. Model results further suggest that reactions that do not directly affect the stability of MnO 4 have a negligible effect on solution density and MnO 4 delivery.

  13. Electroless copper recycling principle analysis of potassium permanganate%化学沉铜高锰酸钾再生原理浅析

    陈光宏; 周定忠; 李飞宏; 龙亚波; 刘希元

    2012-01-01

    In the chemical copper precipitation process, to achieve good desmear ettect, the maustry generally uses constantly supplement potassium permanganate to maintain water content, but this operation not only leads to consumption of materials, and with the production of the ongoing, it also brings potassium permanganate ( six valence manganese )deputy product increase, which will lead to a gradual loss of desmear effect thereby cause desmear net. The potassium permanganate desmear and regenerator principle, parameter design and maintenance, regenerator are introduced, and this article finds out a maintenance of potassium permanganate heptavalent manganese content methods, so as to solve the production process due to potassium permanganate content bad stability problem, and to ensure the quality of the copper deposition.%在化学沉铜工序中,为达到良好的除钻污效果,业界一般采用不断补充高锰酸钾来维持药水含量,但此作业方式不但消耗物料而且随着生产的不断进行也带来锰酸钾(六价锰)副产物的增多,这将导致逐步失去除钻污效果从而造成除钻污不净,本文从高锰酸钾法除钻污和再生器原理,相关参数、再生器设计及维护等方面进行介绍,并从中找出一种维持高锰酸钾七价锰含量的方法,从而解决生产过程中因高锰酸钾含量不足、稳定性差的问题,保证沉铜品质。

  14. The use of permanganate as a sequencing reagent for identification of 5-methylcytosine residues in DNA.

    Fritzsche, E; Hayatsu, H; Igloi, G L; Iida, S.; Kössel, H

    1987-01-01

    The use of permanganate as a reagent for DNA sequencing by chemical degradation has been studied with respect to its specificity for 5-methylcytosine residues. At weakly acidic pH and room temperature, 0.2 mM potassium permanganate reacts preferentially with thymine, 5-methylcytosine, and to a lesser extent with purine residues, while cytosine remains essentially intact. Permanganate oxidation is, therefore, a suitable DNA sequencing reaction for positive discrimination between 5-methylcytosi...

  15. Permanganate method for manufacture of furan-2,5-dicarboxylic acid%高锰酸钾法制备2,5-呋喃二甲酸

    陈天明; 林鹿

    2011-01-01

    Furan-2, 5-dicarboxylic acid was synthesized through oxidation of 5-hydroxymethyl-furfural by potassium permanganate. The influence of the reaction conditions,such as the sodium hydroxide concentration in the reaction system.the reactant/permanganate ratio,and the reaction time,on the yield of furan-2 ,5-dicarboxylic acid , was investigated. The test results showed that the optimal reaction conditions were realized in an acidic condition,when the sodium hydroxide concentration in the reaction system was 2.2 mol/L.the reactant/permanganate ratio was 2.4:1, and the reaction time was 10 min,with the product yield reaching 76.3% . This method for producing furan-2,5-dicarboxylic acid using potassium permanganate can be carried out under mild conditions, without employing an expensive catalyst.%探索了以5-羟甲基糠醛为原料,用高锰酸钾法氧化制备标题化合物.以126 mg(1 mmol)5-羟甲基糠醛为定量,考察了高锰酸钾用量、碱溶液的浓度和反应时间对反应的影响.当高锰酸钾用量为379.2 mg(2.4 mmol),碱溶液的浓度为2.2 mol/L,反应时间为10 min时,得到标题化合物收率为76.3%.研究结果表明,高锰酸钾法制备标题化合物,是一种不用贵金属催化剂,在室温下就可反应的简便方法.

  16. Application of multiwalled carbon nanotubes treated by potassium permanganate for determination of trace cadmium prior to flame atomic absorption spectrometry

    2007-01-01

    In this study we investigated the enrichment ability of oxidized multiwalled carbon nanotubes (MWCNTs) and established a new method for the determination of trace cadmium in environment with flame atomic absorption spectrometry. The MWCNTs were oxidized by potassium permanganate under appropriate conditions before use as preconcentration packing. Parameters influencing the recoveries of target analytes were optimized. Under optimal conditions, the target analyte exhibited a good linearity (R2=0.9992)over the concentration range 0.5-50 ng/ml. The detection limit and precision of the proposed method were 0.15 ng/ml and 2.06%,respectively. The proposed method was applied to the determination of cadmium in real-world environmental samples and the recoveries were in the range of 91.3%-108.0%. All these experimental results indicated that this new procedure could be applied to the determination of trace cadmium in environmental waters.

  17. Improvement of the Experiment Conditions of National Standard Method for Potassium Permanganate Titration%国标法标定高锰酸钾标准溶液的实验条件改进

    郁惠珍

    2015-01-01

    探讨了用草酸钠作为基准物质标定高锰酸钾标准溶液过程中的实验条件,在国标法的基础上分析了加热时机、温度、酸度对标定结果的影响,建议国标法的标定方法改进为:采用100 mL(4+96)硫酸介质、先加热到70~80℃再用高锰酸钾标准溶液滴定的操作方法,可以节省硫酸用量、节省标定时间,同时保证滴定的准确度。%The experiment conditions of potassium permanganate titrant were discussed which sodium oxalate was regarded as the basis material. The influences of the heating time, temperature and acidity on the calibration results on the basis of the national standard method were analyzed. The results recommended that the calibration conditions of national standard method should be improved by using 100 mL (4+96) sulfuric acid medium, and titrating after the potassium permanganate standard solution be heated to 70 ~ 80 ℃. The improvements could save the sulfuric acid consumption and the time of calibration, with guaranteeing the accuracy of titration.

  18. GC/MS Method for the Analysis of Organic Pollutants in Water by Potassium Permanganate%GC/MS方法分析高锰酸钾去除水中有机污染物

    李铁云

    2012-01-01

    采用固相萃取-GC/MS检测分析技术,分析黄河水中的有机污染物检测结果表明黄河水受到了一定程度的污染,相对含量较高的有机污染物是烷烃类、酸类和酯类化合物。研究了高锰酸钾与颗粒活性炭联用对水源水微量有机污染物的去除效果,结果表明,高锰酸钾对苯酚有较好的去除效果,实际水源水在高锰酸钾与颗粒活性炭联用处理后,水中有机物大部分被去除,水源水的致突变活性有明显降低。%Using solid phase extraction - GC/MS detection analysis technology, the organic pollutants in the the Yellow River water was polluted to some extent, and relatively higher content of organic pollutants were alkanes, acids and esters. The effeciency of combined potassium permanganate and granular activated carbon for water trace organic pollutants removal was studied, and the results showed that potassium permanganate phenol had better removal effect, the actual source water in potassium permanganate and granular activated carbon for treatment, organic matter in water was removed mostly, and the mutagenic activity had significantly lower.

  19. A novel technique using potassium permanganate and reflectance confocal microscopy to image biofilm extracellular polymeric matrix reveals non-eDNA networks in Pseudomonas aeruginosa biofilms.

    Swearingen, Matthew C; Mehta, Ajeet; Mehta, Amar; Nistico, Laura; Hill, Preston J; Falzarano, Anthony R; Wozniak, Daniel J; Hall-Stoodley, Luanne; Stoodley, Paul

    2016-02-01

    Biofilms are etiologically important in the development of chronic medical and dental infections. The biofilm extracellular polymeric substance (EPS) determines biofilm structure and allows bacteria in biofilms to adapt to changes in mechanical loads such as fluid shear. However, EPS components are difficult to visualize microscopically because of their low density and molecular complexity. Here, we tested potassium permanganate, KMnO4, for use as a non-specific EPS contrast-enhancing stain using confocal laser scanning microscopy in reflectance mode. We demonstrate that KMnO4 reacted with EPS components of various strains of Pseudomonas, Staphylococcus and Streptococcus, yielding brown MnO2 precipitate deposition on the EPS, which was quantifiable using data from the laser reflection detector. Furthermore, the MnO2 signal could be quantified in combination with fluorescent nucleic acid staining. COMSTAT image analysis indicated that KMnO4 staining increased the estimated biovolume over that determined by nucleic acid staining alone for all strains tested, and revealed non-eDNA EPS networks in Pseudomonas aeruginosa biofilm. In vitro and in vivo testing indicated that KMnO4 reacted with poly-N-acetylglucosamine and Pseudomonas Pel polysaccharide, but did not react strongly with DNA or alginate. KMnO4 staining may have application as a research tool and for diagnostic potential for biofilms in clinical samples. PMID:26536894

  20. Toxic Effects of Potassium Permanganate on Perch Lateolabrax maculates%高锰酸钾对中国花鲈的毒性效应

    朱友芳; 严志洪; 洪万树

    2011-01-01

    In order to provide reference data for the disease control of the cultured Chinese perch (Lateolabrax maculatus), the acute toxicity of potassium permanganate to the perch fry and juvenile was investigated in this study. The levels of GSH and MDA, and activities of SOD, CAT, GPT and GOT in the juvenile liver were determined in response to exposure to different potassium permanganate concentrations. The results show that the LC50 for fry exposed to potassium permanganate were 4.1 mg-L-1(24 h) and 33 mg.L-1(48h), respectively, and the safe concentration was 0.6 mg · L-1; the LC50 for juveniles exposed to potassium permanganate were 4.5 mg.L. 1(24 h) and 4.0 mg.L-1(48 h), and the safe concentration was 0.9 mg. L- 1. Lytic necrosis of the liver tissue of agonal individuals exposed to potassium permanganate was found. After exposure to potassium permanganate at different concentrations for 48 h, the levels of GSH and M DA, and activities of SOD, CAT, GPT and GOT in the juvenile liver changed sensitively, while activity of GPT did not show sensitive change, to potassium permanganate stress. Potassium permanganate stress damaged the antioxidative system and the liver tissue of juvenile Lateolabrax maculctes.%为给中国花鲈(Lateolabrax rnaculatus)养殖的病害防治提供理论数据,研究了高锰酸钾对中国花鲈鱼苗和幼鱼急性毒性,检测了暴露于不同质量浓度高锰酸钾中,幼鱼肝脏的谷胱甘肽(GSH)和丙二醛(MDA)含量以及超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷丙转氨酶(GPT)和谷草转氨酶(GOT)活力.结果表明:高锰酸钾对中国花鲈鱼苗24和48 h的半致死浓度(LC50)分别为4.1和33mg·L-1,安全浓度为0.6 mg·L-1,对幼鱼24和48 h的半致死浓度分别为4.5和4.0 mg·L-1,安全浓度为0.9mg·L-1.暴露在高锰酸钾中濒死幼鱼的肝脏呈空泡状坏死.幼鱼在不同质量浓度的高锰酸钾中暴露48 h,肝脏的GSH和MDA含量以及SOD、CAT和GOT活力对高锰酸钾胁迫敏

  1. Preconcentration of copper with multi-walled carbon nanotubes pretreated by potassium permanganate cartridge for solid phase extraction prior to flame atomic absorption spectrometry

    Jun Ping Xiao; Qing Xiang Zhou; Hua Hua Bai

    2007-01-01

    A procedure for the preconcentration of copper was described in this paper using multi-walled carbon nanotubes (MWCNTs) oxidized by potassium permanganate as the adsorbent for the enrichment of trace copper in water samples.Important parameters, such as the sample pH, the concentration and volume of eluent, sample flow rate and volume, and interference of coexisting ions, were investigated.The obtained results indicated that proposed method possessed an excellent analytical performance.The linear range, the detection limit, and precison (RSD) were 1-100 ng/mL (R2 = 0.9993), 0.32 ng/mL and 2.88%, respectively.The results showed that copper could be adsorbed quantitatively on the pretreated MWCNTs with potassium permanganate, and proposed method was very useful in the monitoring of copper in the environment.

  2. Influence of potassium permanganate, cobalt chloride, and dietary supplement of vitamin B complex on the histopathological changes in gill epithelium of common carp exposed to cadmium

    Das, B.K.; Kaviraj, A. [Univ. of Kalyani, West Bengal (India)

    1994-10-01

    Fry of common carp (Cyprinus carpio) were chronically exposed to 2.5 mg Cd/L alone and in combination with 1.0 mg KMnO{sub 4}/L or 2.0 mg CoCl{sub 2}/L or a dietary supplement of vitamin B complex at the rate of 26.5 mg/100 g food. Cadmium induced edema of primary and secondary gill lamellae, nuclear swelling, and necrosis and hypertrophy of epithelial cells of the secondary gill lamellae. Similar or more severe lamellar damages were observed with exposure to cadmium together with potassium permanganate and to cadmium together with cobalt chloride. Potassium permanganate alone was also found to produce severe edema of the gill lamellae. A dietary supplement of vitamin B complex reduced the cadmium-induced gill damages and resulted in a normal gill in exposed fish. 24 refs., 4 figs., 1 tab.

  3. Oxidation of cefazolin by potassium permanganate: Transformation products and plausible pathways.

    Li, Liping; Wei, Dongbin; Wei, Guohua; Du, Yuguo

    2016-04-01

    Cefazolin was demonstrated to exert high reactivity toward permanganate (Mn(VII)), a common oxidant in water pre-oxidation treatment. In this study, five transformation products were found to be classified into three categories according to the contained characteristic functional groups: three (di-)sulfoxide products, one sulfone product and one di-ketone product. Products analyses showed that two kinds of reactions including oxidation of thioether and the cleavage of unsaturated CC double bond occurred during transformation of cefazolin by Mn(VII). Subsequently, the plausible transformation pathways under different pH conditions were proposed based on the identified products and chemical reaction principles. More importantly, the simulation with real surface water matrix indicated that the proposed transformation pathways of cefazolin could be replayed in real water treatment practices. PMID:26872071

  4. Potassium permanganate-glutaraldehyde chemiluminescence system catalyzed by gold nanoprisms toward selective determination of fluoride.

    Abolhasani, Jafar; Hassanzadeh, Javad; Ghorbani-Kalhor, Ebrahim

    2016-02-01

    Gold and silver nanoparticles (NPs) are shown to exert a positive effect on the chemiluminescence (CL) reaction of permanganate aldehydes. Interestingly, between various shapes examined, Au nanoprisms have the highest beneficial effect. This effect is even more notable in the presence of sodium dodecyl sulfate (SDS) surfactant. UV-vis spectra and transmission electron microscopy were used to characterize the NP shapes and sizes. Furthermore, it was observed that iron(III) ions can slightly increase CL emission of this system. This intensification is very effective in the presence of fluoride ions (F(-)). These observations form the basis of the method for the high sensitive determination of F(-) in the 6-1200 nmol L(-1) concentration range, with a detection limit of 2.1 nmol L(-1). The proposed method has good precision and was satisfactorily used in the selective determination of low concentrations of fluoride ion in real samples. PMID:26110514

  5. Modification of cyanobacterial bloom-derived biomass using potassium permanganate enhanced the removal of microcystins and adsorption capacity toward cadmium (II)

    Highlights: • Potassium permanganate removed microcystins in the cyanobacterial bloom-derived biomass (CBDB). • Potassium permanganate oxidation caused the transformation of hydroxyl to carboxyl on the CBDB. • Manganese dioxide was formed on the surface of CBDB. • Potassium permanganate oxidation process increased the adsorption capacity of CBDB toward Cd(II). - Abstract: Cyanobacterial biomass shows high adsorption capacity toward heavy metal ions. However, the cyanotoxins in the cyanobacterial biomass inhibit its application in heavy metals removal. In order to safely and effectively remove Cd(II) from water using cyanobacterial bloom-derived biomass (CBDB), KMnO4 was used to modify CBDB. The results indicated that the microcystins in the CBDB were successfully removed by KMnO4. Potassium permanganate oxidation caused the transformation of hydroxyl to carboxyl on the CBDB, and formed manganese dioxide on the surface of CBDB. The oxidized CBDB showed higher adsorption capacity toward Cd(II) than that of unoxidized treatment. The optimal KMnO4 concentration for increasing the adsorption capacity of CBDB toward Cd(II) was 0.2 g/L. The adsorption isotherm of Cd(II) by oxidized- or unoxidized-CBDB was well fitted by Langmuir model, indicating that the adsorption of Cd(II) by CBDB was monolayer adsorption. The desorption ratio of Cd(II) from oxidized CBDB was higher than that from unoxidized CBDB in the desorption process using NH4NO3 and EDTA as desorbent. The results presented in this study suggest that KMnO4 modified CBDB may be used as a safe and high efficient adsorbent in Cd(II) removal from water

  6. Application of in situ chemical oxidation technique with potassium permanganate for the remediation of a shallow aquifer contaminated with chlorinated solvents

    Alaine Santos da Cunha; Reginaldo Antonio Bertolo

    2012-01-01

    In situ chemical oxidation is a method that is frequently being used for the remediation of contaminated areas, since it presents an adequate efficiency in the reduction of the contaminant mass, particularly chlorinated ethenes, in a relatively short period of time. This manuscript presents the results of the application of this method, using the injection of potassium permanganate as the remediation agent, in an impacted area with chlorinated organic compounds, especially 1,1-dichloroethene....

  7. Detection of single base mismatches of thymine and cytosine residues by potassium permanganate and hydroxylamine in the presence of tetralkylammonium salts.

    Gogos, J.A.; Karayiorgou, M; Aburatani, H; Kafatos, F C

    1990-01-01

    In the presence of tetramethylammonium chloride, potassium permanganate specifically modifies mismatched thymines. Similarly, the modification of mismatched cytosines by hydroxylamine was enhanced by tetraethylammonium chloride. Modification followed by piperidine cleavage permits specific identification of the T and C mismatches and by extension, when the opposite DNA strand is analyzed, of A and G mismatches as well. These reactions can be performed conveniently with DNA immobilized on Hybo...

  8. Modification of cyanobacterial bloom-derived biomass using potassium permanganate enhanced the removal of microcystins and adsorption capacity toward cadmium (II)

    Shao, Jihai [College of Resources and Environment, Hunan Agricultural University, Changsha 410128 (China); Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use, Hunan Agricultural University, Changsha 410128 (China); Gu, Ji-Dong [Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use, Hunan Agricultural University, Changsha 410128 (China); Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong, Hong Kong Special Administrative Region (Hong Kong); Peng, Liang; Luo, Si; Luo, Huili [College of Resources and Environment, Hunan Agricultural University, Changsha 410128 (China); Yan, Zhiyong, E-mail: zhyyan111@163.com [College of Resources and Environment, Hunan Agricultural University, Changsha 410128 (China); Wu, Genyi, E-mail: wugenyi99@163.com [College of Resources and Environment, Hunan Agricultural University, Changsha 410128 (China)

    2014-05-01

    Highlights: • Potassium permanganate removed microcystins in the cyanobacterial bloom-derived biomass (CBDB). • Potassium permanganate oxidation caused the transformation of hydroxyl to carboxyl on the CBDB. • Manganese dioxide was formed on the surface of CBDB. • Potassium permanganate oxidation process increased the adsorption capacity of CBDB toward Cd(II). - Abstract: Cyanobacterial biomass shows high adsorption capacity toward heavy metal ions. However, the cyanotoxins in the cyanobacterial biomass inhibit its application in heavy metals removal. In order to safely and effectively remove Cd(II) from water using cyanobacterial bloom-derived biomass (CBDB), KMnO{sub 4} was used to modify CBDB. The results indicated that the microcystins in the CBDB were successfully removed by KMnO{sub 4}. Potassium permanganate oxidation caused the transformation of hydroxyl to carboxyl on the CBDB, and formed manganese dioxide on the surface of CBDB. The oxidized CBDB showed higher adsorption capacity toward Cd(II) than that of unoxidized treatment. The optimal KMnO{sub 4} concentration for increasing the adsorption capacity of CBDB toward Cd(II) was 0.2 g/L. The adsorption isotherm of Cd(II) by oxidized- or unoxidized-CBDB was well fitted by Langmuir model, indicating that the adsorption of Cd(II) by CBDB was monolayer adsorption. The desorption ratio of Cd(II) from oxidized CBDB was higher than that from unoxidized CBDB in the desorption process using NH{sub 4}NO{sub 3} and EDTA as desorbent. The results presented in this study suggest that KMnO{sub 4} modified CBDB may be used as a safe and high efficient adsorbent in Cd(II) removal from water.

  9. EFFICIENCY PROBLEMS RELATED TO PERMANGANATE OXIDATION SCHEMES

    Oxidation schemes for the in-situ destruction of chlorinated solvents, using potassium permanganate, are receiving considerable attention. Indication from field studies and from our own work are that permanganate oxidation schemes have inherent problems that could severely limit...

  10. Laboratory-scale column study for remediation of TCE-contaminated aquifers using three-section controlled-release potassium permanganate barriers

    Baoling Yuan; Fei Li; Yanmei Chen; Ming-Lai Fu

    2013-01-01

    A laboratory-scale study with a sand column was designed to simulate trichloroethylene (TCE) pollution in the aquifer environment with three-section controlled-release potassium permanganate (CRP) barriers.The main objective of this study was to evaluate the feasibility of CRP barriers in remediation of TCE in aquifers in a long-term and controlled manner.CRP particles with a 1:3 molar ratio of KMnO4 to stearic acid showed the best controlled-release properties in pure water,and the theoretical release time was 138.5 days.The results of TCE removal in the test column indicated that complete removal efficiency of TCE in a sand column by three-section CRP barriers could be reached within 15 days.The molar ratio of KMnO4 to TCE in the three-section CRP barriers was 16:1,which was much lower than 82∶1 as required when KMnO4 solution is used directly to achieve complete destruction of TCE.This result revealed that the efficiency of CRP for remediation of TCE was highly improved after encapsulation.

  11. Spectrophotometric methods for the determination of ampicillin by potassium permanganate and 1-chloro-2,4-dinitrobenzene in pharmaceutical preparations

    Aftab Aslam Parwaz Khan

    2015-03-01

    Full Text Available Two simple and sensitive kinetic methods for the determination of ampicillin (AMP are described. The first method is based on kinetic investigation of the oxidation reaction of the drug with alkaline potassium permanganate at room temperature for a fixed time of 25 min. The absorbance of the colored manganate ions is measured at 610 nm. The second method is based on the reaction of AMP with 1-chloro-2,4-dinitrobenzene (CDNB in the presence of 0.1 mol L−1 sodium bicarbonate. Spectrophotometric measurement was achieved by recording the absorbance at 490 nm for a fixed time of 60 min. All variables affecting the development of the color were investigated and the conditions were optimized. Plots of absorbance against concentration in both procedures were rectilinear over the ranges 5–30 and 50–260 μg mL−1, with mean recoveries 99.80 and 99.91, respectively. The proposed methods were successfully applied for the determination of AMP in bulk powder and in capsule dosage form. The determination of AMP by the fixed concentration method is feasible with the calibration equations obtained, but the fixed time method proves to be more applicable.

  12. 高锰酸钾氧化预处理某难浸金矿的研究%Study on Oxidation Pretreatment of Refractory Gold Ore with Potassium Permanganate

    唐道文; 储春利; 王锐

    2013-01-01

    在酸性条件下以高锰酸钾为氧化剂,打开难浸金矿中金的硫化物、砷化物包裹,提高金浸出率.结果表明,最佳的氧化预处理条件为:高锰酸钾用量40 g/L、液固比12∶1、H2SO4初始浓度1.0 mol/L、氧化温度80℃、氧化时间5h.预处理后金浸出率可达87.75%.%The package of gold sulfide and arsenic compound in refractory gold ore were broken with potassium permanganate in acidic condition to improve gold leaching rate.The results show that the optimum oxidation pretreatment conditions include dosage of potassium permanganate of 40 g/L,ratio of liquid to solid of 12 ∶ 1,initial concentration of H2SO4 of 1.0 mol/L,oxidation temperature of 80 ℃,and oxidation time of 5 h.The gold leaching rate is over 85% after oxidation pretreatment.

  13. Quantification of potassium permanganate consumption and PCE oxidation in subsurface materials

    Hønning, J.; Broholm, M. M.; Bjerg, P. L.

    2007-03-01

    A series of laboratory scale batch slurry experiments were conducted in order to establish a data set for oxidant demand by sandy and clayey subsurface materials as well as to identify the reaction kinetic rates of permanganate (MnO 4-) consumption and PCE oxidation as a function of the MnO 4- concentration. The laboratory experiments were carried out with 31 sandy and clayey subsurface sediments from 12 Danish sites. The results show that the consumption of MnO 4- by reaction with the sediment, termed the natural oxidant demand (NOD), is the primary reaction with regards to quantification of MnO 4- consumption. Dissolved PCE in concentrations up to 100 mg/l in the sediments investigated is not a significant factor in the total MnO 4- consumption. Consumption of MnO 4- increases with an increasing initial MnO 4- concentration. The sediment type is also important as NOD is (generally) higher in clayey than in sandy sediments for a given MnO 4- concentration. For the different sediment types the typical NOD values are 0.5-2 g MnO 4-/kg dry weight (dw) for glacial meltwater sand, 1-8 g MnO 4-/kg dw for sandy till and 5-20 g MnO 4-/kg dw for clayey till. The long term consumption of MnO 4- and oxidation of PCE can not be described with a single rate constant, as the total MnO 4- reduction is comprised of several different reactions with individual rates. During the initial hours of reaction, first order kinetics can be applied, where the short term first order rate constants for consumption of MnO 4- and oxidation of PCE are 0.05-0.5 h - 1 and 0.5-4.5 h - 1 , respectively. The sediment does not act as an instantaneous sink for MnO 4-. The consumption of MnO 4- by reaction with the reactive species in the sediment is the result of several parallel reactions, during which the reaction between the contaminant and MnO 4- also takes place. Hence, application of low MnO 4- concentrations can cause partly oxidation of PCE, as the oxidant demand of the sediment does not need

  14. Novel sequential process for enhanced dye synergistic degradation based on nano zero-valent iron and potassium permanganate.

    Wang, Xiangyu; Liu, Peng; Fu, Minglai; Ma, Jun; Ning, Ping

    2016-07-01

    A novel synergistic technology based on nano zero-valent iron (NZVI) and potassium permanganate (KMnO4) was developed for treatment of dye wastewater. The synergistic technology was significantly superior, where above 99% of methylene blue (MB) was removed, comparatively, removal efficiencies of MB with the sole technology of NZVI and KMnO4 at pH 6.39 being 52.9% and 63.1%, respectively. The advantages of this technology include (1) the in situ formed materials (manganese (hydr)oxides, iron hydroxides and MnFe oxide), resulting in the stable and high removal efficiency of MB and (2) high removal capacity in a wide range of pH value. Compared with simultaneous addition system of NZVI and KMnO4, MB removal was remarkably improved by sequential addition system, especially when KMnO4 addition time was optimized at 20 min. Analyses of crystal structure (XRD), morphological difference (FE-SEM), element valence and chemical groups (XPS) of NZVI before and after reaction had confirmed the formation of in situ materials, which obviously enhanced removal of MB by oxidation and adsorption. More importantly, the roles of in situ formed materials and degradation mechanism were innovatively investigated, and the results suggested that NCH3 bond of MB molecule was attacked by oxidants (KMnO4 and in situ manganese (hydr)oxides) at position C1 and C9, resulting in cleavage of chromophore. This study provides new insights about an applicable technology for treatment of dye wastewater. PMID:27105151

  15. Potassium permanganate elicits a shift of the external fish microbiome and increases host susceptibility to columnaris disease.

    Mohammed, Haitham H; Arias, Covadonga R

    2015-01-01

    The external microbiome of fish is thought to benefit the host by hindering the invasion of opportunistic pathogens and/or stimulating the immune system. Disruption of those microbial communities could increase susceptibility to diseases. Traditional aquaculture practices include the use of potent surface-acting disinfectants such as potassium permanganate (PP, KMnO4) to treat external infections. This study evaluated the effect of PP on the external microbiome of channel catfish and investigated if dysbiosis leads to an increase in disease susceptibility. Columnaris disease, caused by Flavobacterium columnare, was used as disease model. Four treatments were compared in the study: (I) negative control (not treated with PP nor challenged with F. columnare), (II) treated but not challenged, (III) not treated but challenged, and (IV) treated and challenged. Ribosomal intergenic spacer analysis (RISA) and pyrosequencing were used to analyze changes in the external microbiome during the experiment. Exposure to PP significantly disturbed the external microbiomes and increased catfish mortality following the experimental challenge. Analysis of similarities of RISA profiles showed statistically significant changes in the skin and gill microbiomes based on treatment and sampling time. Characterization of the microbiomes using 16S rRNA gene pyrosequencing confirmed the disruption of the skin microbiome by PP at different phylogenetic levels. Loss of diversity occurred during the study, even in the control group, but was more noticeable in fish subjected to PP than in those challenged with F. columnare. Fish treated with PP and challenged with the pathogen exhibited the least diverse microbiome at the end of the study. PMID:26170019

  16. Clinical observation on potassium permanganate in the treatment of patients with bedsore%高锰酸钾治疗压疮的临床观察

    罗辑; 邓晓艳

    2016-01-01

    Objective:To observe the effect of potassium permanganate in the treatment of patients with over phase Ⅱ bedsore. Methods:57 patients with phase Ⅱ Ⅲ Ⅳ bedsore were selected,they were randomly divided into the two groups,28 patients in the observation group were treated with potassium permanganate solution immersion and TDP irradiation.29 patients in the control group were treated with debridement,oxygen,dressing with povidone iodine and TDP irradiation.Results:The total effective rate in the observation group was significantly higher than that in the control group,and the healing time was significantly shortened(P<0.05 or <0.01).Conclusion:The effect of potassium permanganate in the treatment of patients with over stage Ⅱ bedsore is significant.%目的:观察高锰酸钾治疗Ⅱ期以上压疮的效果.方法:将57例Ⅱ、Ⅲ、Ⅳ期压疮患者随机分为两组,观察组28例采用高锰酸钾溶液浸泡、TDP照射治疗,对照组29例采用清创、吹氧、聚维酮碘涂抹敷料包扎、TDP照射疗法.结果:观察组总有效率明显高于对照组,治愈时间明显缩短(P<0.05或<0.01).结论:高锰酸钾治疗Ⅱ期以上的压疮效果显著.

  17. Uses of the potassium permanganate to eliminate copper cyanide from waste water resulting from a lixiviation plant in a gold mine (II): Pilot plant experiences

    The search for a detoxification treatment of the wastewater generated during industrial processes, has been a constant for all companies in general and for gold mining in particular, whose wastewater generally contains high concentrations of cyanide compounds with high toxicity. In the previous research work, developed in the laboratory, the efficacy of potassium permanganate as an oxidizing agent for cyanidic wastewater, from a gold hydrometallurgical plant, has been demonstrated, achieving the destruction of copper cyanide complexes present in solution and the subsequent metal removal by precipitation as hydroxide. This paper presents the conclusions obtained after the implementation of the process developed in the laboratory, at pilot-plant scale. (Author) 30 refs.

  18. Kinetic Modelling for the Assay of Nortriptyline Hydrochloride Using Potassium Permanganate as Oxidant

    Rahman, Nafisur; Khan, Sumaiya

    2014-01-01

    Kinetic methods for accurate determination of nortriptyline hydrochloride have been described. The methods are based on the oxidation of nortriptyline hydrochloride with KMnO4 in acidic and basic media. In acidic medium, the decrease in absorbance at 525.5 nm and in basic medium, the increase in absorbance at 608.5 nm were measured as a function of time. The variables affecting the reactions were carefully investigated and optimised. Kinetic models such as initial rate, rate constant, variabl...

  19. Kinetic modelling for the assay of nortriptyline hydrochloride using potassium permanganate as oxidant.

    Rahman, Nafisur; Khan, Sumaiya

    2015-06-01

    Kinetic methods for accurate determination of nortriptyline hydrochloride have been described. The methods are based on the oxidation of nortriptyline hydrochloride with KMnO4 in acidic and basic media. In acidic medium, the decrease in absorbance at 525.5 nm and in basic medium, the increase in absorbance at 608.5 nm were measured as a function of time. The variables affecting the reactions were carefully investigated and optimised. Kinetic models such as initial rate, rate constant, variable time and fixed time were employed to construct the calibration curves. The initial rate and fixed time methods were selected for quantification of nortriptyline hydrochloride. In acidic medium, the calibration curves showed a linear response over the concentration range 10-50 μg mL(-1) for initial rate and 10-60 μg mL(-1) for fixed time method (2 min). In basic medium, the calibration graphs were linear over the concentration range 10-100 μg mL(-1) for initial rate and fixed time methods (4 min). In acidic medium, the limits of detection for initial rate and fixed time methods (2 min) were 1.02 and 3.26 μg mL(-1), respectively. In basic medium, the limits of detection were found to be 1.67 and 1.55 μg mL(-1) for initial rate and fixed time methods (4 min), respectively. The initial rate and fixed time methods have been successfully applied to the determination of nortriptyline hydrochloride in commercial dosage form. Statistical comparison of the results of the proposed methods with those of reference method exhibited excellent agreement and there is no significant difference between the compared methods in terms of accuracy and precision. PMID:25380790

  20. Thermal Analysis of Whole Bacterial Cells Exposed to Potassium Permanganate Using Differential Scanning Calorimetry: a Biphasic Dose-Dependent Response to Stress

    Marina K. Abuladze

    2009-01-01

    Full Text Available Differential scanning calorimetry (DSC was applied to estimate the impact of the toxic oxidant potassium permanganate (PM on the intracellular structural and functional alterations at whole cell level using soil bacteria Arthrobacter oxydans as a model culture. Differential scanning calorimetry (DSC was applied in order to estimate the impact of the toxic oxidant potassium permanganate (PM on the intracellular structural and functional alterations at the whole cell level using the soil bacteria Arthrobacter oxydans as a model culture. We compared the total melting heat and the temperature of DNA-protein complex (DNP melting at the PM application prior to the calorimetry measurement and after 24-h exposure at the concentration range 0.02–1.4 mM. The initial oxidative effect caused changes in the pattern of the whole cell melting spectra (mainly at the temperature range 56–78°C, the decrease of Tmax °C DNP melting, and did not influence significantly the total heat of bacterial melting at different concentrations of PM. The prolonged effect of permanganate up to 24 h was characterized by a biphasic dose-dependent response to stress estimated by the DSC technique and the colony-forming assay. The low doses of PM (0.02 and 0.2 mM stimulated cell proliferation, and increased the total whole cell melting heat and the temperature of DNP melting. The toxic effect of PM up to 0.04 mM reduced cell viability, changed the character of multipeaked thermograms, and lowered the total melting heat and the temperature of DNP melting in a concentration-dependent manner. This study presents the DSC method for evaluating and monitoring the effects of exposure to potential human and environmental toxicants.

  1. Preparation of the Certified Reference Material of Potassium Permanganate Solution%高锰酸钾溶液标准物质的研制

    梁秀丽; 张坤; 王爱萍; 李本涛; 王学琴; 姚旭霞; 刘立君

    2013-01-01

    Preparation process of potassium permanganate solution standard material was introduced. Weighing titrimetric method was used for certification. The homogeneity and stability of potassium permanganate solution standard material were examined. The results indicated that the standard material was homogeneous and the value stated was valid for a period of 6 month. The stated value of it was c( 1 / 5 KMnO4)=0.100 7 mol / kg(k=2). The standard material meets the requirements of the secondary level of standard material and it has been authorized for the state-level standard material.%介绍高猛酸钾溶液标准物质的研制过程.对研制的溶液标准物质进行了均匀性和稳定性考察.结果表明,该标准物质均匀性良好,定值稳定期为6个月.用称量滴定法定值,定值结果为c(1/5KMnO4)=0.1007 mol/kg(k=2).该标准溶液满足二级标准物质的技术要求,已被批准为国家级二级标准物质.

  2. Study on treating slightly-polluted water with potassium permanganate and coagulation%高锰酸钾和混凝剂联用处理微污染水源水试验

    李喜林; 刘玲; 江富; 许克; 丁蕊; 狄军贞

    2013-01-01

      以中国北方典型低温微污染水源—白石水库为研究对象,采用烧杯静态试验,进行了高锰酸钾单独氧化及高锰酸钾与混凝剂联用处理微污染水源水的研究.试验结果表明:高锰酸钾与混凝剂混合投加对高锰酸盐指数(CODMn)和氨氮(NH3-N)去除效果明显,并起到良好的除浊作用.最佳运行条件为先投加高锰酸钾2.5 mg/L,氧化15 min 后投加 PAC30 mg/L、PAM3 mg/L.%As a typical low temperature slightly-polluted water source in northern China, the water in Baishi reservoir is investigated in this study. The potassium permanganate oxidation only and the potassium permanganate--coagulation combined process were studied in a beaker static test for treating slightly-polluted water. The results show that potassium permanganate and coagulation combined process has a better effect in removing permanganate index (CODMn), ammonia nitrogen (NH3-N), and improving water turbidity. The optimum operation conditions are: the dosage of potassium permanganate is 2.5 mg/L, PAC is 30mg/L and PAM is 3 mg/L. The PAC and PAM should be added after a 15 min oxidation of potassium permanganate.

  3. The Effect of Phenol Wastewater Treatment with Potassium Permanganate Based Catalyst%常温下高锰酸钾系催化剂处理含酚废水效果研究

    张晨; 赵胜勇; 刘菲

    2015-01-01

    采用浸渍法制备的高锰酸钾催化剂对含酚废水在常温下进行化学法处理,结果表明,单纯使用高锰酸钾为活性组分制备的催化剂对含酚废水的处理效果不明显,而加入铜离子后催化剂对含酚废水的降解率增加,同样c(Mn)∶c(Cu)=1∶3情况下,高浓度高锰酸钾催化剂对含酚废水的降解率高于低浓度高锰酸钾催化剂。%Phenolic wastewater was treated by chemical method using potassium permanganate catalysts prepared by impregnation method at normal temperature,and the results revealed that catalyst using potassium permanganate as the active component did not show the good performance in wastewater treating,while the catalyst adding copper ions made the decomposition rate of hydroxybenzene increase. Furthermore,catalyst containing high concentration of potassium permanganate led higher decomposition rate of phenolic wastewater than that containing low concentration of potassium permanganate at the same ratio of manganese to copper=1∶3 in molar fraction.

  4. Dissolution of chromium from stellites in acid and alkaline permanganate-an electrochemical study

    Stellite-3 and stellite-6 were used as material of construction in primary and auxiliary systems of nuclear reactors. These materials have superior high temperature corrosion and wear resistance. Even though the actual surface area exposed to neutron flux and their corrosion and wear rates are negligibly small, they are the major contributors for total 60Co activity mainly because of their high cobalt content (50-60%). Apart from the general radiation build up which is due to the redistribution of activated corrosion products, the particles of cobalt released mainly from stellite could contribute to the radioactive hotspots in both high temperature as well as low temperature circuits of nuclear reactors. A detailed study was done to develop and optimize a decontamination process to dissolve out these hotspots that were formed mainly due to stellite. For this purpose dissolution studies were done for the stellite-3 and stellite-6 alloy powders in various permanganate based decontaminating formulations. It was of importance to understand the difference in efficiencies for different formulations. Dissolution capability of the alloy powder was observed to depend not only on the concentration of MnO4-, pH and temperature but also on the microstructure of the alloy. Stellite-3 and stellite-6 are both Co-Cr-W alloys but are quite different in their microstructures. The present study was carried out in order to understand the mechanistic aspects of corrosion of both these stellites in nitric acid permanganate (NP) and alkaline permanganate (AP) formulations. Electrochemical impedance measurements in NP showed that in both the alloys corrosion takes place via an adsorbed intermediate. However in AP, the process seems to be diffusion controlled. SEM/EDAX analysis done on the specimens exposed to full redox step indicated preferential corrosion attack on both the alloys in both the formulations. In NP, the attack was predominantly on Co-rich matrix phase and Cr

  5. Effect of potassium permanganate, cobalt chloride and vitamin B complex on the haematological parameters of cadmium treated common carp, Cyprinus carpio.

    Kaviraj, A; Das, B K

    1995-01-01

    Effect of potassium permanganate, cobalt chloride and vitamin B complex on the haematological parameters of common carp Cyprinus carpio were markedly influenced by a treatment of 2.5 mg/l Cd in the laboratory for 96 hours. Hb% and ESR values were increased but the RBC and PCV values were reduced. Treatment of KMnO4 (1 mg/l) or CoCl2 (2 mg/l) induced a further reduction of RBC of the Cd treated fish. But parameters like PCV, MCV and MCH of Cd treated fish were not affected by the treatment of KMnO4 and CoCl2. Intramuscular injection of vitamin B complex did not produce any impact on ESR and MCV values of the Cd treated exposed fish but most of the other parameters of such fish were found comparable to control indicating that vitamin B complex could counteract Cd to reduce its ill effect. PMID:8580524

  6. Uses of the potassium permanganate to eliminate copper cyanide from waste water resulting from a lixiviation plant in a gold mine (I)

    The use of cyanide in the hydrometallurgical and chemical industries has led to the emergence of a major environmental problem due to its high toxicity. Te wastewater generated at these plants is hazardous to the environment and therefore must be managed properly. For this purpose, they undergo detoxification processes after lodes from the plant are accumulated in waste-resistant containment ponds that mast be waterproof to prevent environmental disasters from leakages or massive flood. This work shows the results obtained in laboratory tests carried out with plant waters and demonstrates the efficacy of potassium permanganate as an oxidant of cyanide wastewater from a gold hydrometallurgical plant. In the process the destruction of the copper cyanide complexes is solution is achieved and copper metal ions are eliminated through precipitation mostly as hydroxide. (Author) 28 refs.

  7. Application of in situ chemical oxidation technique with potassium permanganate for the remediation of a shallow aquifer contaminated with chlorinated solvents

    Alaine Santos da Cunha

    2012-12-01

    Full Text Available In situ chemical oxidation is a method that is frequently being used for the remediation of contaminated areas, since it presents an adequate efficiency in the reduction of the contaminant mass, particularly chlorinated ethenes, in a relatively short period of time. This manuscript presents the results of the application of this method, using the injection of potassium permanganate as the remediation agent, in an impacted area with chlorinated organic compounds, especially 1,1-dichloroethene. The effectiveness of this remediation method is related to the complexity of the conceptual model of the contaminated site and to the conduction of specific studies in laboratory and pilot tests in field scale, prior to the accomplishment of the full-scale remediation. Therefore, this work contributes presenting a description of the procedures that are commonly used for conducting this kind of studies. In the case under study, it was estimated that the mass of 1.1-dichloroethene (1.1-DCE was reduced from 15.53 to 1.81 kg in groundwater 22 months after the injection of potassium permanganate in the aquifer. The average concentrations of 1.1-DCE in groundwater decreased from 200 to 24 g/L, which value is lower than the environmental standard limit and also to the calculated target of remediation based on human-health risk assessment. Significant contamination rebounds were not identified in the aquifer after the injection of the chemical oxidant. The suitable results of the remediation in this case may be related to the relatively low aquifer heterogeneity and low original concentrations of the contaminant.

  8. 利用Excel分析标定高锰酸钾标准溶液的不确定度%Analysis of uncertainty the standard potassium permanganate solution using Excel

    孙伟; 胡静; 邢宇; 郭丽娜

    2013-01-01

    在理化分析过程中,一切测量都具有不确定度.例如,实验室经常使用的KMnO4标准溶液,标定其浓度产生不确定度的来源就有很多方面.标准要求溶液浓度精确到万分位,因此,对于标定KMnO4标准溶液的准确性就尤为重要.本文根据GB/T601-2002标准滴定溶液的制备建立数学模型,找出影响KMnO4标准溶液浓度的主要因素,分析不确定度影响因子,利用Excel软件计算合成不确定度,最终提出标定KMnO4标准溶液浓度准确性最有效的改进建议.%In the analysis of physical and chemical process, all the measurements have uncertainty. For example, the laboratory often use the potassium permanganate standard volumetric solutions, the concentration of calibration uncertainty source has many aspects. Standard solution concentration precisely to extremely, so for the calibration of potassium permanganate standard solution accuracy is particularly important. This is according to the GB/T601-2002 chemical reagent preparations of standard volumetric solutions to build mathematical model, to find out the effect of potassium permanganate standard volumetric solutions were the main factors, analysis of uncertainty factors, using the EXCEL tool for the calculation of combined uncertainty, finally proposed the calibration of potassium permanganate standard volumetric solutions of the accuracy of the most effective suggestions for improvement.

  9. Study on Removal of Manganese from Micro-polluted Water by Potassium Permanganate Preoxidation%高锰酸钾预氧化强化微污染水源水中锰的去除

    王群; 王江川; 王林; 马军; 叶琳嫣

    2013-01-01

    Nowadays,there is a problem of the manganese overrunning for most surface water in China,and it brings great risk to the security of water supply.This study inspects the effects of removal of manganese by potassium permanganate preoxidation.The results show that the removal of manganese in raw water decreased significantly after pretreatment by potassium permanganate,when the dosing quantity of potassium permanganate reaches 0.5mg/1,the concentration of manganese ion in water has already reached the detection limit of atomic absorption,but chroma increased.When the dosage of potassium permanganate and ferrous sulfate is 1 to 4,the removal effect of manganese is good,and also with the increase of the dosing quantity of ferrous ion,the removal rate of manganese decreased.%目前,我国很多地区地表水都存在锰超标问题,这给供水安全带来了极大隐患.本文考察了高锰酸盐预氧化强化水中锰的去除效果.实验结果表明,原水经过高锰酸盐处理后,水中的锰含量明显降低,当高锰酸盐投加量达到0.5mg/L之后,水中的锰离子浓度已经达到了原子吸收检出限以下,但色度有所增加.当高锰酸钾∶硫酸亚铁=1∶4时,水中的锰去除效果较好,色度降低,随着亚铁离子投加比例的增加,水中锰的去除率反而下降.

  10. Características físico-químicas de amidos modificados com permanganato de potássio/ácido lático e hipoclorito de sódio/ácido lático Physicochemical characteristics of starches modified with potassium permanganate/lactic acid and sodium hypochlorite/lactic acid

    Roberto Marques Silva

    2008-03-01

    H 4.0 and phosphate buffer (pH 7.0. The results showed that waxy corn and cassava starches presented high expansions, when modified with KMNO4/lactic acid (25.8 and 24.1 mL.g-1, respectively. The starch pastes of waxy corn showed freeze-thaw stability in all treatments. Differential dyeing and carboxyl content did not vary between the native and modified samples; only potato starch reacted with methylene blue, due to the presence of phosphate groups. With respect to pH and acidity, almost all samples presented values next to neutrality, except corn and waxy corn starch modified with NaOCl/lactic acid. The starches oxidized with KMnO4/lactic acid presented lower viscosity peaks than those oxidized with NaOCl. The viscosity peaks of starches analyzed in phosphate buffer were lower than in water and acetate buffer.

  11. 沉淀池污泥回流工艺强化低浊水处理效能研究%Study on effects of enhanced treatment of low turbidity water with technical of potassium permanganate, PAM and recycled sludge

    孙丽华; 李圭白; 李星; 杨艳玲

    2012-01-01

    The effectiveness of enhancing treatment of water with low turbidity through combined effects of potassium permanganate oxidation, PAM aiding coagulation and sludge recycling was investigated through continuous bench scale studies. Additionally, the mechanism of pollutant removal was discussed. Comparing with ferric chloride coagulation,only recycling sedimentation sludge was ineffective in enhancing treatment of water with low turbidity. PAM with recycled sludge showed positive effects, and the additional potassium permanganate dosing exhibited the best potential of favoring coagulation. It was observed that the optimal potassium permanganate dosage was 0. 4 mg/L. SEM analysis indicated that the floes were loosely formed and the particle diameter was critically low for ferric chloride coagulation process. Comparatively, the addition of PAM and potassium permanganate with recycled sludge facilitated the aggregation of tinny particles onto compact PAM polymer chains, therefore contributing to the formation of compact floes with high particle diameter. The combined employment of recycled sludge, PAM and potassium permanganate showed the best potential of favoring coagulation, mainly through synergistic effects between seeding, polymer bridging and increasing effective collision in mechanism.%通过动态试验考察了高锰酸钾、PAM、回流污泥组合应用强化低浊水处理的效能,并探讨了组合工艺对水中污染物的的去除机制.与投加三氯化铁相比,单纯将沉淀污泥回流不能有效改善低浊水处理效果;将回流污泥和PAM同时投加可以改善处理效果;在投加回流污泥和PAM时,投加KMnO4 可进一步改善混凝效果,KMnO4最佳投加量为0.4 mg/L.电镜扫描结果显示单纯三氯化铁絮凝所形成的絮体粒径小且结合松散,而PAM、KMnO4、回流污泥组合应用可以使许多细小颗粒彼此聚合,絮体粒径增大并且结合致密.从理论上论证了回流污泥、PAM、KMnO4组

  12. Effect of natural Bayah zeolite particle size reduction to physico-chemical properties and absortion against potassium permanganate (KMnO4)

    Widayanti, Siti Mariana; Syamsu, Khaswar; Warsiki, Endang; Yuliani, Sri

    2016-02-01

    Recently, researches on nanotechnology have been developed very rapid, as well as the utilization of nano-zeolites. Nano-sized material has several advantages which are expanding absorptive surfaces so it will enhance the material absorption and shorten the absorption time. Zeolite as a KMnO4 binder, has been widely recognized for its ability to extend the shelf life of vegetables and fruits. This study was conducted to determine zeolites physico-chemical characters from different particle size and the effect on KMnO4 absorption. Potassium permanganate (KMnO4) is a strong oxidizer for reducing the quantity of ethylene in storage process of fresh horticultural products. The treatment consisted of (1) different length of milling time (10, 20, 30, 40, and 60 minutes) and (2) the duration of chemical activation with 1 N KOH solution. Physical and chemical characters of zeolite were analyzed using BET, PSA, XRD and SEM. The research design was randomized design. The result implied that milling time was significantly affecting the zeolite particle size, material surface area, and the size of pore diameter and volume. Milling treatment for 40 minutes produced higher zeolite surface area and pore volume than other treatments. While the duration of chemical activation using 1 N KOH solution gives different effect on zeolite absorption to KMnO4 solution. Milling time for 60 minutes and activated for 48 hours has higher initial adsorption than other treatments.

  13. Kinetics on triclosan oxidation by potassium permanganate in drinking water%高锰酸钾氧化去除水中三氯生动力学研究

    徐勇鹏; 杨静琨; 王在刚

    2011-01-01

    Jar tests were conducted to expose the kinetic law of triclosan oxidation by potassium permanganate in aquatic environment.The rate constant of the reaction was obtained,meanwhile,the factors influencing the value of K,such as potassium permanganate dosage,pH value and temperature,were investigated.The results showed that triclosan was rapidly oxidized by potassium permanganate in aqueous solution with different initial concentrations of potassium permanganate,and second-order reaction kinetics was observed between triclosan and potassium permanganate with second-order reaction rate constant K=0.331 6 mL·s-1·mol-1.The second-order reaction rate constant was influenced by pH values,and K reached its lowest and highest level at pH 5 and 7 respectively.The rate of oxidation increased with the temperature increasing,and the reaction activation energy E a=32.35 kJ·mol-1,which revealed that the oxidation reaction between triclosan and potassium permanganate was feasible under usual water treatment condition.Therefore,potassium permanganate is a feasible oxidant which can removal the triclosan quickly and efficiently.%为了揭示高锰酸钾氧化去除水中三氯生的动力学规律,通过烧杯试验研究得出高锰酸钾氧化三氯生的反应速率常数,同时探讨高锰酸钾浓度、pH、温度等因素对反应速率常数的影响.试验结果表明:不同高锰酸钾浓度下,三氯生能够被迅速氧化,氧化三氯生的反应符合二级反应动力学,二级反应动力学常数K=0.331 6 mL.s-1.mol-1.pH对反应速率常数有显著影响,在pH为5、7时,K分别达到最小值和最大值.高锰酸钾氧化三氯生的反应速率随着反应温度的增加而增加,该反应表观活化能Ea为32.35 kJ.mol-1,说明该反应在一般水处理条件下较容易发生.高锰酸钾是一种快速、高效去除水中三氯生的氧化剂.

  14. 碘化钾碱性高锰酸钾法测量海水化学需氧量不确定度的研究%Research into Uncertainty in Measurement of Seawater Chemical Oxygen Demand by Potassium Iodide-Alkaline Potassium Permanganate Determination Method

    张世强; 郭长松

    2007-01-01

    葡萄糖与谷氨酸以 1:1 的比例配制成标准物质,用人工海水和标准物质配制成系列标准溶液,根据碘化钾碱性高锰酸钾法对系列标准溶液的测量结果,获得了海水 COD 测量不确定度在全量程范围内的分布规律,即测量不确定度在高端大不恒定,在低端小恒定.%Using the glucose and L-glutamic-acid to prepare the standard substance according to the ratio of 1:1, and the artificial seawater and the standard substance to prepare a series of standard solutions, the distribution pattern of uncertainty in measurement of seawater COD is obtained based on the measured results of the series of standard solutions by the potassium iodide-alkaline potassium permanganate determination method. The distribution pattern is as follows: Uncertainty in measurement is big and not constant at the high end, but small and constant at the low end.

  15. Discussion on the Method of MTO Methanol Product Potassium Permanganate Time Analysis%MTO级甲醇产品高锰酸钾时间分析方法的探讨

    杨少林

    2015-01-01

    根据ASTM E 34-2003[1]、 ASTM D1363-2006[2]、 GB/T6324.3-2011[3]等工业甲醇的高锰酸钾试验标准,文章对甲醇产品锰酸钾时间分析方法进行了探讨。此分析的目的是确定一个观测数值或大概计算数值与相关国家技术规范的符合性,分析结果应修约到与技术规范限值的小数点保留位数相一致。此分析方法适用于在甲醇及MTO级中存在有能还原高锰酸甲杂质的测定。%According to the standards about Potassium Permanganate test and other industrial methanol, such as ASTM E 34-2003 , ASTM D1363-2006 , GB/T6324.3-2011 , etc., the method of methanol product potassium permanganate time analysis was discussed. The purpose of this analysis was to determine an observed or calculated values for the compliance relevant technical standards compliance. The results should be rounded to the right of the decimal point number was consistent with the specification limits. This method was suitable for testing methanol and MTO methanol in detection can restore a permanganate impurities.

  16. Role of potassium in acid secretion

    John P Geibel

    2005-01-01

    Potassium (K+) ions are critical for the activation and catalytic cycle of the gastric H+,K+-ATPase, resulting in the secretion of hydrochloric acid into the parietal cell canaliculus. As both symptom, severity and esophageal mucosal damage in gastro-esophageal reflux disease (GERD) are related to the degree of acid exposure, K+ is a logical target for approaches to inhibit acid production.The probable K+ binding site on the gastric H+,K+-ATPase has recently been described and studies are elucidating how K+ activates the enzyme. K+ channels in the apical membrane of the parietal cell are implicated in the recycling of K+ and, to date, three potential K+ channels (KCNQ1, Kir2.1 and Kir4.1) have been identified. The channels represent theoretical sites for agents to control acid secretion but it will be difficult to develop selective blockers. An alternative strategy is to prevent K+ from activating gastric H+,K+-ATPase; the potassiumcompetitive acid blocker (P-CAB) class inhibits acidsecretion by binding at or near the K+ binding site.Ongoing research is further defining the role of K+ in the functioning of the gastric H+,K+-ATPase, as well as determining the clinical utility of agents directed toward this important cation.

  17. 一种简易高锰酸钾坐浴溶液配制比色装置的设计%Design of a simple device for compounding sitz bath solution of potassium permanganate

    闫涛; 李海英; 杨永进; 蔡兴伟; 李海珍; 叶丽萍; 李春霞; 王燕飞; 陈洁

    2013-01-01

    目的:提供一种能够快速、准确配制所需浓度高锰酸钾坐浴溶液的简易装置,解决浓度偏差问题。方法:根据不同浓度高锰酸钾溶液所呈现颜色不同的特点,设计出一种基于目测比色法原理的简易装置并验证其效果。将103份拟配制的高锰酸钾坐浴溶液随机分成试验组51份和对照组52份,分别采用该装置及传统目测法配制不同浓度的高锰酸钾溶液,比较其两组方法的准确率。结果:试验组配制高锰酸钾坐浴溶液浓度的准确率为90.2%,显著高于对照组的65.4%(x2=4.60,P<0.05)。结论:使用该装置配制高锰酸钾坐浴溶液准确、便捷、直观,优于传统目测法。%Objective:To provide a new type of simple device which can compound desired sitz bath solution of potassium permanganate for medical staff. Methods:According to the characteristic that different concentration of potassium permanganatevisual solution presents a certain color, a novel apparatus which was based on visual color measurement principles was designed. The using effect was observed. 103 solutions of potassium permanganate were divided into 51 of test group and control group of 52 randomly. The device was used in test group and the traditional visual method was used in control group, and 0.1%, 0.5%, 1.0%and 2.0%potassium permanganate solutions were compounded respectively. The accuracy of two groups was compared. Results:The accuracy of test group was 90.2%, and the accuracy of control group was 65.4%(x2=4.60, P<0.05). Accuracy of the test group is significantly higher than the control group. Conclusion:It was accurate, convenient and intuitive that the equipment was applied to compound sitz bath solution of potassium permanganate and it was superior to the conventional visual method.

  18. 硫酸铜和高锰酸钾对花幼鱼的急性毒性试验%Acute Toxicity of Copper Sulphate and Potassium Permanganate to the Larva of Hemibarbus maculates

    聂志娟; 徐钢春; 顾若波

    2011-01-01

    In a water temperature of 24~27℃ condition,Acute toxicity of Copper sulphate and Potassium Permanganate to larval of Hemibarbus maculates were studied by Stagnophile toxic Test method.The results showed that the LC50(24h),LC50(48h),LC50(96h),safe concentration of Copper sulphate are respectively 0.242,0.196,0.196,0.0 386mg/L;the LC50(24h),LC50(48h),LC50(96h),safe concentration of Potassium Permanganate are respectively 1.83,1.37,1.19,0.23mg/L.Poisonous effect of two solutions to Hemibarbus maculates are large comparatively and two solutions exist poisoning risk,The sensibility of larval of Hemibarbus maculates to Copper sulphate washigher than that of potassium permanganate,so Copper sulphate were not recommended to introduce and potassium permanganate should were used carefully in aquaculture.%采用静水生物测试法,在水温24~27℃条件下,研究硫酸铜和高锰酸钾对花幼鱼的急性毒性。结果显示,硫酸铜对花幼鱼的LC50(24h)、LC50(48h)、LC50(96h)、安全质量浓度值分别为0.242、0.196、0.196和0.0 386mg/L,高锰酸钾对花幼鱼的LC50(24h)、LC50(48h)、LC50(96h)、安全质量浓度值分别为1.83、1.37、1.19和0.23mg/L。2种药液对花幼鱼的毒害作用都比较大,使用时存在中毒风险。花鱼幼鱼对硫酸铜的敏感度大于高锰酸钾,在水产生产中不建议采用硫酸铜,高锰酸钾应谨慎使用。

  19. 高锰酸钾对水中17α-乙炔基雌二醇去除效果的研究%Removal of 17α-ethynyestradiol in source water by potassium permanganate

    唐凯; 马晓雁; 李青松; 高乃云

    2012-01-01

    Potassium permanganate, a widely applied antioxidant in water treatment, was used to remove endocrine disrupting chemicals-17α-ethynyestradiol (EE2). The effects of potassium permanganate dosage, EE2 concentration, pH, and ionic strength on EE2 removal were investigated. The results showed that potassium permanganate could remove EE2 effectively, and the removal rate of EE2 was more than 90%. The removal rate of EE2 increased with the increasing of dosage of potassium permanganate. In the early reaction, the removal rate of EE2 accelerated with the increasing of initial EE2 concentration. However, this phenomenon was not obvious in the latter stage of the reaction. The removal rate in partial neutral and alkaline was propitious to EE2 removal. In the range of the test concentrations, the removal rate of EE2 showed positive linear relationship with the concentrations of ionic strength and organic matter.%采用水处理中常用的氧化剂高锰酸钾对内分泌干扰物17α-乙炔基雌二醇(EE2)进行去除研究,考查不同高锰酸钾浓度、EE2浓度、pH和离子强度等对EE2去除效果的影响.试验结果表明高锰酸钾可以有效去除EE2,去除率达到90%以上.EE2的去除率随着高锰酸钾浓度的增加而增大.反应前期,去除随着EE2初始浓度的增加而加快,反应后期则影响不大.偏中性和碱性时有利于EE2的去除.试验浓度范围内,EE2的去除和离子强度、有机物的含量呈正线性关系.

  20. 硅胶担载的高锰酸钾对烯烃碳碳双键的氧化%Carbon-Carbon Double Bond Cleavage by Silica-supported Potassium Permanganate under Conditions Free of Organic Solvent

    王文军; 戴乾圜

    2002-01-01

    An improved simple method for carbon-carbon double bond cleavage by silica-supported potassium permanganate was described and a possible mechanism was proposed.%在无有机溶剂做介质的条件下,用硅胶吸附的高锰酸钾氧化6种难溶于水的液态烯烃,得到了双键发生断裂的氧化产物.该反应操作简便,反应快,收率好.此外,对硅胶的活化作用机制进行了浅析.

  1. Intermediate-scale 2D experimental investigation of in situ chemical oxidation using potassium permanganate for remediation of complex DNAPL source zones

    Heiderscheidt, J. L.; Siegrist, R. L.; Illangasekare, T. H.

    2008-11-01

    In situ chemical oxidation is a technology that has been applied to speed up remediation of a contaminant source zone by inducing increased mass transfer from DNAPL sources into the aqueous phase for subsequent destruction. The DNAPL source zone can consist of one or more individual sources that may be present as an interconnected pool of high saturation, as a region of disconnected ganglia at residual saturation, or as combinations of these two morphologies. Potassium permanganate (KMnO 4) is a commonly employed oxidant that has been shown to rapidly destroy DNAPL compounds like PCE and TCE following second-order kinetics in an aqueous system. During the oxidation of a target DNAPL compound, or naturally occurring reduced species in the subsurface, manganese oxide (MnO 2) solids are produced. Research has shown that these manganese oxide solids may result in permeability reductions in the porous media thus reducing the ability for oxidant to be transported to individual DNAPL sources. It can also occur at the DNAPL-water interface, decreasing contact of the oxidant with the DNAPL. Additionally, MnO 2 formation at the DNAPL-water interface, and/or flow-bypassing as a result of permeability reductions around the source, may alter the mass transfer from the DNAPL into the aqueous phase, potentially diminishing the magnitude of any DNAPL mass depletion rate increase induced by oxidation. An experiment was performed in a two-dimensional (2D) sand-filled tank that included several discrete DNAPL source zones. Spatial and temporal monitoring of aqueous PCE, chloride, and permanganate concentrations was used to relate changes in mass depletion of, and mass flux, from DNAPL residual and pool source zones to chemical oxidation performance and MnO 2 formation. During the experiment, permeability changes were monitored throughout the 2D tank and these were related to MnO 2 deposition as measured through post-oxidation soil coring. Under the conditions of this experiment, Mn

  2. Discussion on affecting factors of the determination of potassium permanganate consumption of food contact plastics%食品接触塑料制品高锰酸钾消耗量测定影响因素探讨

    杨丽; 王娟; 黎群娣

    2012-01-01

    根据GB/T 5009.60-2003《食品包装用聚乙烯、聚苯乙烯、聚丙烯成型品卫生标准的分析方法》测定食品接触塑料制品高锰酸钾消耗量,在测定工作中不难发现高锰酸钾消耗量的测定结果波动比较大,影响测定结果的准确度,因此对影响测定的可能因素进行了探讨。%According to GB/T 5009.60-2003《method for analysis of hygienic standard of products of polyethylene,polystyrene and polypropylene for food packaging》determination of potassium permanganate consumption of food contact plastics,it's not hard to find larger fluctuation for the potassium permanganate consumption determination result.So we compares and discusses the possible factors affecting the determination.

  3. 高锰酸钾浓度对羊毛与山羊绒纤维性能的影响%Concentration of potassium permanganate on the performance of wool and cashmere fiber

    刘灿灿; 赵亚梅; 李龙

    2013-01-01

    The differences of potassium permanganate concentration on the performance of wool and cashmere was studied. By means of the different concentration of oxidant processing wool and cashmere, the weight loss rate of treated wool and cashmere, breaking strength loss rate, elongation at break loss rates, felt shrink volume and whiteness were compared. The results show that breaking strength and the elongation at break of cashmere treated in the potassium permanganate are seriously damaged, shrink-resistance of treated wool is worse than cashmere, the whiteness of treated wool is better than cashmere.%研究高锰酸钾浓度对羊毛与山羊绒性能影响的差异性.通过不同浓度的氧化剂处理羊毛与山羊绒,比较处理后的羊毛与山羊绒的失重率、强力损失率、断裂伸长率损失率、毡缩体积、白度.得出经高锰酸钾处理后的山羊绒的断裂强力和断裂伸长率损伤较大,而处理过的羊毛防毡缩性远没有山羊绒好,处理后的羊毛的白度比山羊绒的好.

  4. 碘量法测定氧化处理槽液中的高锰酸钾%Determination of Potassium Permanganate Content in Oxidized Solution by Iodometry Method

    金欢; 徐小平

    2013-01-01

    The potassium permanganate content in oxidized solution was determined by iodometry method.The accuracy and precision of this way was confirmed by test of the relative standard deviation (RSD).The RSD of the determination result is 0.24%,which indicates that the method is sample and correct.The recovery ratio was proved by adding standard potassium permanganate solution into the sample solution.The recovery of this analysis method is 99.48% ~ 103.22% which can achieve the analysis request.%用碘量法分析钢铁氧化处理槽中高锰酸钾的含量,计算分析结果的相对标准偏差确定该方法的准确度和精密度,分析结果的相对标准偏差为0.24%,本方法简单且准确.通过在样品中加入高锰酸钾标准溶液来测定回收率,该分析方法的回收率在99.48%~103.22%之间,达到分析要求.

  5. Effect of potassium permanganate preoxidation on the adsorption of trace phenol by powdered activated carbon%高锰酸钾强化粉末活性炭吸附效能研究

    姜成春; 马军; 李圭白

    2000-01-01

    The influence of potassium permanganate preoxidation on the adsorption of phenol by pow-dered activated carbon was evaluated. The results showed that potassium permangnate preoxidation in-creased the adsorption capacity of trace phenol by powdered activated carbon. This increase was be-lieved due to the oxidized polymerization of phenol compounds on the surface of powdered activatedcarbon or the adsorption by the manganese dioxide formed in situ during permanganate oxidation.%以苯酚为代表物质,探讨了不同pH、不同本底等条件下高锰酸钾预氧化对粉末活性炭吸附水中微量有机污染物的影响规律。结果表明,高锰酸钾预氧化使苯酚在粉末活性炭表面的饱和吸附量增加,其增加幅度取决于吸附过程中高锰酸钾的氧化条件及新生态水合二氧化锰的生成量。

  6. Microwave- and Ultrasound-Accelerated Green Permanganate Oxidation of Thioethers

    Luu, Thi Xuan Thi; Le, Huu Tan; Le, Thach Ngoc;

    2015-01-01

    Product formation from the solvent-free oxidation of aliphatic, cyclic or aromatic thioethers by permanganate supported on copper sulfate pentahydrate has been investigated in detail with respect to the importance of the nature of thioethers, the molar ratio of potassium permanganate absorbed on ...

  7. Characterization of potassium salts of 12-tungstophosphoric acid

    Potassium salts of 12-tungstophosphoric acid with varying amounts of cation, KxH3-xPW12O40 (x = 1, 2, 3) have been prepared and their characteristics investigated by thermal analyses, FT-IR and micro-Raman spectroscopy and SEM-EDS analysis. It was found that the number of replaced protons by potassium ions in the 12-tungstophosphoric acid structure has influence on the presence of different protonic species, their dynamic equilibrium and on the conductivity of salts. The results reported in this study have been applied to improve the structural model of insoluble acidic salts. It is shown that an acidic potassium salt presents a mixture of neutral salt and unreacted acid. The nature of this mixture depends on the number of replaced protons-oxonium ions by cations. Preliminary measurements with synthesized compounds as solid electrolytes in fuel cells have been done, too.

  8. 高锰酸钾配合金霉素眼膏治疗新生儿脓疱疮的疗效观察%Clinical observation of treating nenoatal impetigo patients by potassium permanganate combined with oculentum aureomycini

    马信姬

    2014-01-01

    目的:探讨高锰酸钾药浴配合金霉素眼膏治疗新生儿脓疱疮的疗效。方法将82例新生儿脓疱疮患者随机分为治疗组和对照组,治疗组44例采用0.01%高锰酸钾溶液全身沐浴,然后用金霉素眼膏局部涂擦;对照组38例在常规治疗的基础上,采用0.5%碘伏棉球局部涂擦。比较2种方法对新生儿脓疱疱的疗效。结果治疗组有效率为90.9%,对照组有效率为71.1%,差异有统计学意义(χ2=7.82,P<0.05)。结论高锰酸钾药浴加金霉素眼膏治疗新生儿脓疱疮的效果满意,值得临床推广。%Objective To observe the effect of potassium permanganate combined with oculentum aureomycini in the treatment of nenoatal impetigo patients.Method Eighty-two patients were divided randomly into treatment group and control group.Forty-four patients in the treat-ment group were treated with medicated bath with 0.01% potassium permanganate solution,and then given oculentum aureomycin inunction, Thirty-eight patients of the control group were applicated with 0.5%iodophor contton ball embrocaion on the basis of the conventi onal treat-men.The curative effect of the two groups were compared.Results The effective ratio was 90.9%in treatment group,and 71 .1%in control group.The difference was significant in statistics(χ2 =7.82,P<0.05).Conclusion Potassium permanganate combined with oculentum au-reomycini for nenoatal impetigo patients has satisfactory effect which is worthy of clinical promotion..

  9. Potassium

    ... stimulation and in the contraction of muscles. Cellular enzymes need potassium to work properly. A potassium deficiency ... or prune juice, honeydew melons, prunes, molasses and potatoes. Some foods high in potassium are also high ...

  10. 高锰酸钾褪色光度法测定梨中维生素C含量%Fading Spectrophotometric Determination of Vitamin C in Pears by Potassium Permanganate Method

    左国强; 张晓杰

    2015-01-01

    利用维生素C对高锰酸钾的褪色效应建立了褪色光度法测定维生素C的新方法。在1 moL/L H2 SO4介质中,维生素C使高锰酸钾褪色。在波长525 nm处,测定高锰酸钾溶液褪色前后吸光度,吸光度的变化值△A与维生素C的浓度在0~20μg/mL范围内成线性关系,R2=0.9998。用于样品中维生素C的含量测定,回收率在101%~105%之间,RSD为1.1%。%The fading spectrophotometric determination of Vitamin C has been carried out by use of the fading effect of Vitamin C in potassium permanganate.In the medium 1 moL/L H2 SO4 ,Vitamin C discolors potassium permanganate whose absorbance has been determined before and after its depigmentation at wavelength 525 nm.There is a linear relationship R2 =0.999 8 between the varying absorbance and the concentration of Vitamin C within 0~20 μg/mL.It can be used to determine the amount of Vitamin C in samples with recovery rates 101%~105% and RSD 1.1%.

  11. Kinetic and Mechanistic Aspects of the Reactions of Iodide and Hypoiodous Acid with Permanganate: Oxidation and Disproportionation.

    Zhao, Xiaodan; Salhi, Elisabeth; Liu, Huiling; Ma, Jun; von Gunten, Urs

    2016-04-19

    Oxidation kinetics of iodide and HOI/OI(-) by permanganate were studied in the pH range of 5.0-10.0. Iodide oxidation and iodate formation were faster at lower pH. The apparent second-order rate constants (kobs) for iodide oxidation by permanganate decrease with increasing pH from 29 M(-1) s(-1) at pH 5.0 and 6.9 M(-1) s(-1) at pH 7.0 to 2.7 M(-1) s(-1) at pH 10.0. kobs for HOI abatement are 56 M(-1) s(-1) at pH 5.0, 2.5 M(-1) s(-1) at pH 7.0, and 173 M(-1) s(-1) at pH 10.0. Iodate yields over HOI abatement decrease from 98% at pH 6.0 to 33% for pH ≥ 9.5, demonstrating that HOI disproportionation dominates HOI transformation by permanganate at pH ≥ 8.0. MnO2 formed as a product from permanganate reduction, oxidizes HOI to iodate for pH OI(-) undergoes a fast permanganate-mediated disproportionation. PMID:27003721

  12. An Inquiry into the Green Preparation of Potassium Permanganate%高锰酸钾的制备绿色化的探究

    陈彦玲; 田丽

    2011-01-01

    Based on the concept of green chemistry, this paper inquires the preparation experiment of potassittm permanganate in the course of inorganic chemistry experiment. The improved experiment has a better effect, saves medicine, and realizes the transformation from traditional experiment to green experiment.%本文根据绿色化学的理念,对无机化学实验课程中的高锰酸钾制备实验进行了探究。探究后的实验效果较好,节省了药品,实现了该实验向绿色化的转变。

  13. Potassium

    Potassium is a mineral that the body needs to work normally. It helps nerves and muscles communicate. ... products out of cells. A diet rich in potassium helps to offset some of sodium's harmful effects ...

  14. 21 CFR 172.725 - Gibberellic acid and its potassium salt.

    2010-04-01

    ... 21 Food and Drugs 3 2010-04-01 2009-04-01 true Gibberellic acid and its potassium salt. 172.725... HUMAN CONSUMPTION Other Specific Usage Additives § 172.725 Gibberellic acid and its potassium salt. The food additives gibberellic acid and its potassium salt may be used in the malting of barley...

  15. 高锰酸钾与粉末活性炭联用去除水中微量有机污染物%Study on the effectiveness of potassium permanganate in combination with powdered activated carbon for the removal of micropollutants from water

    姜成春; 马军; 李圭白

    2000-01-01

    研究了高锰酸钾与粉末活性炭联用处理技术对水中微量苯酚的去除作用。试验发现了高锰酸钾预氧化使粉末活性炭产生吸附增量这一现象,证明了二者联用的协同污染去除作用。并对高锰酸钾与粉末活性炭联用技术的除污染效能进行了分析。%The paper investigated the effectiveness of potassium permanganate in combination withpowdered activated carbon for removal of phenols in trace amounts. The results show that potassiumpermanganate together with powdered activated carbon have synergistic effect which results in betterremoval effect than the added effect achieved when each of them was used alone. The phenomenonwhich potassium permanganate preoxidation can increase the saturated adsorption capacity of powderedactivated carbon was found. Some analysis on the effectiveness of potassium permanganate in combination with powdered activated carbon for the removal of pollutants from water was also given.

  16. Investigation on Simultaneous Effect of KMnO4 Concentration and Processing Time on Tensile Strength, Weight and Stiffness of Denim Jeans During Acid Washing with Pumice Stone

    Elias Khalil

    2015-01-01

    This present investigation deals with the effect of processing time and concentration of potassium permanganate on tensile strength, weight and stiffness of denim garments. Three 100% cotton denim jeans were treated with stone acid wash with the variation of processing time (1.5, 2 & 2.5 minutes) and concentration (1.5, 2& 2.5g/l) of potassium permanganate after typical enzyme bleach wash. Tensile Strength, Weight and Stiffness (bending length) were investigated before and after each ...

  17. Determination of plutonium in nitric acid solutions - Method by oxidation by cerium(IV), reduction by iron(II) ammonium sulfate and amperometric back-titration with potassium dichromate

    This International Standard specifies a precise and accurate analytical method for determining plutonium in nitric acid solutions. Plutonium is oxidized to plutonium(VI) in a 1 mol/l nitric acid solution with cerium(IV). Addition of sulfamic acid prevents nitrite-induced side reactions. The excess of cerium(IV) is reduced by adding a sodium arsenite solution, catalysed by osmium tetroxide. A slight excess of arsenite is oxidized by adding a 0.2 mol/l potassium permanganate solution. The excess of permanganate is reduced by adding a 0.1 mol/l oxalic acid solution. Iron(III) is used to catalyse the reduction. A small excess of oxalic acid does not interfere in the subsequent plutonium determination. These reduction and oxidation stages can be followed amperometrically and the plutonium is left in the hexavalent state. The sulfuric acid followed by a measured amount of standardized iron(II) ammonium sulfate solution in excess of that required to reduce the plutonium(VI) to plutonium(IV) is added. The excess iron(II) and any plutonium(III) formed to produce iron(III) and plutonium(IV) is amperometrically back-titrated using a standard potassium dichromate solution. The method is almost specifically for plutonium. It is suitable for the direct determination of plutonium in materials ranging from pure product solutions, to fast reactor fuel solutions with a uranium/plutonium ratio of up to 10:1, either before or after irradiation

  18. DIRECT OXIDATION OF EUGENOL USING A PERMANGANATE

    Reinner Ishaq Lerrick

    2009-05-01

    Full Text Available Direct oxidation of eugenol has been done using potassium permanganate. This research attempts to produce benzyl carboxylic acid, an important intermediate reactant for isoflavone synthesis, directly by breaking the p bond of allillic group attached to eugenol. The oxidation procedures were adopted from Wahyuningsih and Kusumaningsih anetol oxidation reactions. There were three modifications done i.e. one polar system of the oxidation environment, variation of time of reflux and temperature. Eugenol was firstly diluted in water by converting to its salt type and then oxidized using KMnO4 at 75 oC for 4 hours. The expected acid was separated by acidifying using sulfuric acid. The result showed that direct oxidation of eugenol using modified method of Wahyuningsih gave only a vicinal diol which undergoes polymerization into product in 80% yield with 83% purity. However, variation of time of reflux of Wahyuningsih method showed the same result with Kusumaningsih method as brown oily viscous liquid. The product was only 38% purity.

  19. Microwave- and Ultrasound-Accelerated Green Permanganate Oxidation of Thioethers

    Luu, Thi Xuan Thi; Le, Huu Tan; Le, Thach Ngoc; Duus, Fritz

    2015-01-01

    Product formation from the solvent-free oxidation of aliphatic, cyclic or aromatic thioethers by permanganate supported on copper sulfate pentahydrate has been investigated in detail with respect to the importance of the nature of thioethers, the molar ratio of potassium permanganate absorbed on copper sulfate pentahydrate and reaction activation methods. While microwave irradiation affects appropriately on the fast formation of the sulfones within 3-13 minutes to get the yield more than 74%,...

  20. Continuous postcolumn detection of underivatized polysaccharides in high-performance liquid chromatography by reaction with permanganate.

    Thomas, J; Mort, A J

    1994-11-15

    We describe a continuous postcolumn reaction system for colorimetric detection of carbohydrates suitable for use with both preparative and analytical HPLC separations. A fraction of the effluent from the column is mixed via a T-junction with a 0.02% solution of potassium permanganate in 3 M sulfuric acid. The mixture then passes through a reaction coil heated to 100 degrees C, and its absorbance at 525 nm is continuously monitored. Bleaching of the permanganate is proportional to the sugar concentration. The major advantages of the detection system are its mass rather than molar sensitivity and insensitivity to changes in nonoxidizable buffer concentrations. As little as 0.1 micrograms of sugar can be detected. These features make the system suitable for detection, with high sensitivity, of polysaccharides using gradient elution from ion-exchange columns. PMID:7695109

  1. Potassium

    ... Take all forms of potassium with a full glass of water or fruit juice.Add the liquid ... to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in ...

  2. Flotation of uranyl ions by alkylcarboxylic acid salts of potassium

    Physical and chemical features of uranyl cation flotation by potassium salts of fatty acids from diluted solutions are presented. Maximum degree of uranyl flotation is shown to occur in the range of pH=5-6 which corresponds to flotoactive forms of UO22+(OH)+ and to the form of collector as RCOO-. Efficiency of collector first increases with the length of hydrocarbon radical (due to decreasing sublate solubility) and then declines (due to increasing electrokinetic potential). Increase of the temperature of solutions leads to an increase in sublate solubility and to a decrease in the extent of uranyl flotation. 8 refs.; 4 figs.; 2 tabs

  3. Oxidation of non-steroidal anti-inflammatory drugs with aqueous permanganate.

    Rodríguez-Álvarez, Tania; Rodil, Rosario; Quintana, José Benito; Triñanes, Sara; Cela, Rafael

    2013-06-01

    Potassium permanganate is a strong oxidant widely used in drinking water treatment, that can react with organic micropollutants. Thus, the oxidation kinetics and transformation route of seven non-steroidal anti-inflammatory drugs (NSAIDs) upon reaction with potassium permanganate was investigated. A liquid chromatography-quadrupole-time-of-flight-mass spectrometry (LC-Q-TOF-MS) system was used to follow the time course of pharmaceuticals concentrations and for the identification of their by-products. Under strong oxidation conditions (2 mg L(-1) KMnO4, 24 h), only two NSAIDs were significantly degraded: indomethacine and diclofenac. The degradation kinetics of these two drugs was investigated at different concentrations of permanganate, chlorides, phosphates and sample pH by means of a full factorial experimental design. Depending on these factors, half-lives were in the range: 2-270 h for indomethacine and 3-558 h for diclofenac, equivalent to apparent second order constants between 0.65 and 9.5 M(-1) s(-1) and 0.27 and 7.4 M(-1) s(-1), respectively. Permanganate concentration was the most significant factor on NSAIDs oxidation kinetics, but the pH also played a significant role in diclofenac reaction, being faster at acidic pH. In the case of indomethacine, the dose of permanganate seemed also to play an autocatalytic effect. The use of an accurate-mass high resolution LC-Q-TOF-MS system permitted the identification of a total of 13 by-products. The transformation path of these drugs consisted mainly of hydroxylations, decarboxylations and oxidation of aromatic double bonds, with ring opening. The software predicted toxicity of these products indicates that they are expected not to be more toxic than the NSAIDs, with the exception of two indomethacine by-products. Reaction in real samples was slower and/or incomplete for both pharmaceuticals, depending on the organic matter content of the sample. However, still all transformation products could be detected for

  4. CO2激光治疗及联合高锰酸钾粉封包治疗跖疣疗效观察%Curative effect observation of CO2 laser treatment combined with potassium permanganate powder packets for treatment of plantar warts

    田晓辉; 田晓川; 哈斯其其格

    2014-01-01

    目的:观察激光治疗联合高锰酸钾粉封包治疗跖疣的临床疗效。方法:收治跖疣患者120例,随机分为联合治疗组和对照组,各60例。联合治疗组采取激光气化联合高锰酸钾粉封包治疗;对照组采取单纯激光气化治疗。结果:治疗组治愈率88%,对照组治愈率66%,联合治疗组临床疗效优于对照组。结论:激光治疗联合高锰酸钾粉封包治疗跖疣疗效好。%Objective:To explore the curative effect of laser treatment combined with potassium permanganate powder packets for treatment of plantar warts.Methods:120 patients with plantar warts were selected.They were randomly divided into the combined treatment group and the control group with 60 cases in each group.The combined treatment group were treated with laser treatment combined with potassium permanganate powder packets;the control group were treated with single laser gasification therapy.Results:In the combined treatment group,the cure rate was 88% .In the control group,the cure rate was 66% .In the combined treatment group,the clinical efficacy was better than that of the control group.Conclusion:The curative effect of laser treatment combined with potassium permanganate powder packets for treatment of plantar warts is good.

  5. Uses of the potassium permanganate to eliminate copper cyanide from waste water resulting from a lixiviation plant in a gold mine (II): Pilot plant experiences; Aplicacion del permanganato potasico para la eliminacion de cianuros de cobre en aguas residuales de la planta de lixiviacion en una mina de oro (II): Ensayos en planta piloto

    Sancho, J. P.; Fernandez, B.; Ayala, J.; Gracia, M. P.; Lavandeira, A.

    2011-07-01

    The search for a detoxification treatment of the wastewater generated during industrial processes, has been a constant for all companies in general and for gold mining in particular, whose wastewater generally contains high concentrations of cyanide compounds with high toxicity. In the previous research work, developed in the laboratory, the efficacy of potassium permanganate as an oxidizing agent for cyanidic wastewater, from a gold hydrometallurgical plant, has been demonstrated, achieving the destruction of copper cyanide complexes present in solution and the subsequent metal removal by precipitation as hydroxide. This paper presents the conclusions obtained after the implementation of the process developed in the laboratory, at pilot-plant scale. (Author) 30 refs.

  6. Dynamic analysis on the source water ammonia nitrogen and potassium permanganate index of lower reaches of Changjiang river Taihu lake basin Jiangyin period during 2008 to 2011%长江下游太湖流域江阴段2008-2011年水源水氨氮、高锰酸盐指数动态变化分析

    缪国忠; 陈军; 何政

    2012-01-01

    Objective To understand the pollution status of source water ammonia nitrogen and potassium permanganate index in Changjiang river Taihu basin Jiangyin segment Method Selecting the source water of 3 water plants in Jiangyin during 2008 to 2011 and monitoring ammonia nitrogen in the water and potassium permanganate index. Results In the past 4 years, ammonia nitrogen were among the level of 0. 10 to 0. 86 mg/L and average value was 0.15 ±0. 18 mg/L, the level raised year by year, but there was no statistically significant between the years. Water pollution was serious in dry season and light in wet season. Potassium permanganate index was during 0. 24 to 2. 80 mg/L, and the average was 1. 79 ± 1. 20 mg/L, it was increasing year by year, and there was statistically significant between the years, in autumn the pollution was the most serious. Conclusions The ammonia nitrogen and potassium permanganate index of taihu lake basin jiangyin period were increasing year by year, organic contaminant was the internal factors of the two rising%目的 揭示长江太湖流域江阴段水源水中氨氮、高锰酸盐指数的污染变化规律.方法 2008-2011年对江阴段3个水厂取水点源水进行氨氮、高锰酸盐指数监测.结果 4年间氨氮在0.10~0.86mg/L之间,平均值(0.15±0.18)mg/L;总体呈逐年上升趋势,每年间差异无统计学意义.季节上枯水期污染严重,丰水期较轻.高锰酸盐指数在0.24~2.80mg/L之间,平均值(1.79±1.20)mg/L;呈逐年上升趋势,每年间差异有统计学意义,季节上秋季污染最严重.结论 长江太湖流域江阴段源水中氨氮、高锰酸盐指数呈逐年上升趋势,有机污染物是两者升高的内在因素.

  7. 由软锰矿制备高锰酸钾实验技术的改进%Experimental technique improvement ofpotassium permanganate prepared from MnO2

    郝仕油; 薛晓东; 张方榜

    2012-01-01

    介绍了一种高锰酸钾合成实验的改进方法.通过引入一定量的醋酸为锰酸钾歧化反应的介质,得到了纯度较高的高锰酸钾产品.利用醋酸为反应介质所合成的高锰酸钾纯度(94.5%)远远高于在锰酸钾溶液中通入CO2使其歧化所得高锰酸钾的纯度(70%左右).%An experimental technique improvement method of potassium permanganate prepared from MnO2 was introduced. A high purity potassium permanganate was synthesized using acetic acide as the medium of disproportionation reaction of potassium manganate. The purity of potassium permanganate (94.5% ) prepared using acetic acide as the reaction medium was higher than that ( about 70% ) of sample synthesized introducing CO2 into the solution of potassium manganate.

  8. Efficiency of trichloroethylene removal from the contaminated soil using potassium permanganate%高锰酸钾氧化去除砂壤土中三氯乙烯的试验研究

    吴嘉怡; 蔡信德; 靖元孝; 韩蕊; 郭杨

    2011-01-01

    Potassium permanganate (KMnO4) oxidation of trichloroethylene (TCE) in soil slurry system was investigated on effects of KMnO4 cocentration, pH, reaction time, initial TCE concentration and treatment times. Through the orthogonal test, the optimal operation condition of oxidation was determined to be KMnO4 concentration 125mg/L, pH value of 7.0, reaction time 30min, resulting in 100mg/kg TCE degradation reaching 93.7%. The removal rate of TCE was decreased with increased initial TCE concentration. Second treatments significantly enhanced contaminant removal,particularly in high-level TCE contaminated soils. Results from soil column experiments showed that TCE with initial concentration of 50mg/kg could be oxidized by KMnO4 at 88.1% removal rate after 12 days.%以环境中常见的污染物三氯(TGE)为研究对象,利用高锰酸钾(KMnO4)对工业场地土壤中的TCE进行处理,探讨了不同氧化条件、污染物初始浓度、氧化次数等对去除效果的影响.结果表明,采用正交试验获得优化操作条件为:KMnO4浓度125mg/L,pH7,反应时间30min.在此条件下,100mg/kg的TCE去除率达到93.7%.TCE的去除率随污染物浓度的增加而减小,对于污染程度高的土壤,2次处理能有效提高去除率.土柱实验结果表明经过KMnO4溶液淋洗12d后,初始浓度为50mg/kg的TCE氧化率均达到88.1%以上,降低淋洗流速可提高TCE的去除率.

  9. Kinetic spectrophotometric determination of traces of molybdenum(VI) by its inhibitory effect on the oxidation of 4-hydroxycoumarine by potassium permanganate.

    Micic, Ruzica J; Simonovic, Ranko M; Petkovic, Branka B

    2006-05-01

    The present paper describes a simple, selective and sensitive kinetic method for the determination of trace amounts of molybdenum(VI) based on its inhibitory effect on the reaction oxidation of 4-hydroxycoumarine by KMnO(4) in the presence of hydrochloric acid, at pH 1.75 at 25 degrees C. The rate of the indicator reaction was followed spectrophotometrically by measuring the decrease in the absorbance of KMnO(4) at 525 nm. The development method includes optimization of the reagent concentration and temperature. The calibration graph was linear in the range of concentrations from 20 to 200 ng/cm(3) of molybdenum(VI). The probable relative error was in the interval 3.10 - 10.52% for the concentration range of 200 - 20 ng/cm(3) molybdenum(VI), respectively. The interference effects of the foreign ions were determined to assess the selectivity of the method. The developed method was found to have relatively good selectivity, sensitivity, simplicity and rapidity. The proposed method was applied to the determination of molybdenum(VI) in a particular type of steel and alloy (hastelloy). PMID:16770065

  10. Raman scattering spectra and crystal structure of acid potassium-lithium sulfate

    Paper presents the results of the comprehensive investigation into Raman scattering in potassium-lithium acid sulfate crystal. A model of crystal structure is suggested on the basis of the study data. The suggested consistent model of the crystalline structure of potassium-lithium acid sulfate crystal describes well both spectrum high-frequency and low-frequency sections and may be used to analyze models of phase transformation

  11. 高锰酸钾预氧化强化混凝去除绿藻的研究%The study of green algae removal by potassium permanganate pre-oxidation enhanced coagulation

    张龙; 乔俊莲; 雷青

    2013-01-01

    This study investigated the influence of permanganate oxidation on algae cell structure, zeta potential, extracellular organic matter molecular weight distribution and concentration, and explored the mechanisms of permanganate-enhanced chlorella algae removal by coagulation. When the dosage of permanganate was no more than 2 mg·L-1 , the composition of organic matter in suspension kept unchanged and partial extracellular organic matter ( EOM) was oxidized. At the beginning of oxidation, permanganate induced the release of EOM from the algae and thus increased the organic content in suspension. The zeta potential experienced an increase after a decrease while the algae activity was dropped by permanganate. However, the structure of algae kept complete and MnO2 produced after oxidation adhered to the algae surface which increased the algae density and favored the subsequent algal coagulation. When the concentration of permanganate was no less than 3 mg·L-1 , the algal cell structure was destroyed, the high molecular intracellular organic matter was released into the algae suspension, and zeta potential decreased, all of which had negative effects on subsequent algal coagulation. The results showed that the optimal dosage of permanganate was 2 mg·L-1 and the optimum contact time for permanganate oxidation was 1 h. Permanganate pre-oxidation could enhance algae removal by coagulation with PAC significantly.%以小球藻为对象,研究不同高锰酸钾投加量下小球藻胞外有机物分子量的分布、Zeta电位和胞外有机物浓度变化,并观察细胞结构,探讨预氧化强化混凝的机理.研究发现,当高锰酸钾浓度≤2 mg·L-1时,氧化前后藻液中的有机物组成基本不变,胞外分泌物(EOM)部分被氧化;在预氧化初期,EOM在高锰酸钾诱导下释放,胞外有机物浓度升高;藻的表面电位先下降后上升,藻活性由于高锰酸钾氧化受到抑制,但藻细胞结构保持完整,氧化后生成的MnO2附着在

  12. Potassium permanganate effects in postharvest conservation of the papaya cultivar Sunrise Golden Permanganato de potássio na conservação pós-colheita da cultivar de mamão Sunrise Golden

    Danieele Fabíola Pereira Silva

    2009-07-01

    Full Text Available The objective of this work was to evaluate the effects of KMnO4 on the extension of postharvest life of 'Sunrise Golden' papaya, stored under modified atmosphere and refrigeration. Fruit with up to 10% yellow peel were harvested in a commercial orchard in Linhares, state of Espírito Santo, Brazil. Sets of three fruit (unit mass of 289.9±18.5 g were wrapped in low-density polyethylene films (28 ¼m thick containing sachets of KMnO4 at 0, 0.5, 1, 1.5, and 2 g per bag. The bags were sealed and stored at 10.4±0.9°C and 90±5% relative humidity for 25 days. After this period, the fruit were removed from the bags and maintained at 21±0.8°C and 90±5% relative humidity until complete ripening. Four days after bag sealing, CO2 concentration stabilized in all treatments, and was higher in bags without KMnO4. In all treatments, fruit reached the climacteric respiratory peak on the third day after bag removal, coinciding with peel color index of 3.5. Increasing the KMnO4 dose reduced the losses in fruit fresh matter, consistency and pulp electrolyte leakage. Potassium permanganate was effective in maintaining the fruit at the pre-climacteric stage during the 25-day storage, and did not interfere with normal ripening after bag removal.O objetivo deste trabalho foi avaliar os efeitos do KMnO4 na extensão da vida pós-colheita da cultivar de mamão Sunrise Golden, armazenada em atmosfera modificada e refrigeração. Frutos com até 10% da área superficial da casca amarela foram colhidos em pomar comercial em Linhares, ES. Conjuntos de três frutos (massa unitária de 289,9±18,5g foram acondicionados em filmes de polietileno de baixa densidade (28 µm de espessura, com sachês de KMnO4 nas doses de 0, 0,5, 1, 1,5, e 2 g por embalagem. As embalagens foram hermeticamente fechadas e armazenadas a 10,4±0,9°C e 90±5% de umidade relativa (UR, por 25 dias. Após esse período, os frutos foram retirados das embalagens e armazenados a 21±0,8°C e 90±5% de

  13. 高锰酸钾-鲁米诺化学发光体系测定香草醛%Determination of vanillin with potassium permanganate-luminol chemiluminescence system

    周艳梅; 王亚萍; 马同森; 谢晓龙

    2012-01-01

    Based on the fact that the chemiluminescence (CL) reaction of potassium permanganate and luminol in alkaline medium could be enhanced by vanillin, a new analytical method of chemiluminescence to detect vanillin was developed, which expands the application of flow-injection chemiluminescence in food analysis. The effect of type of medium and concentration of reagents on CL intensity was investigated. The results showed that the optimum concentrations of NaOH, KMnO4 and Lumino were 0.20 mol/L, 3. 0 × 10 -5 mol/L and 7. 0 × 10-5 mol/L, respectively. Under the optimum conditions, linearity relationship of values of CL intensity and mass concentration of vanillin was obtained in the range of 5. 0× 10-8 ~3. 0 × 10-6g/mL, with a equation of linear regression as A/ = 7. 188 3 × 108 C( g/mL) + 71. 767 4 (r = 0.994 2). Parallel determination of 5. 0 × 10-7 g/mL vanillin for 11 times show that the RSD is 1.3% with a detection limit of 1.1 × 10-8 g/mL. A new method of flow-injection chemiluminescence to detect vanillin was found, which has been successfully applied to the determination of vanillin in pill and the recovery rate obtained were in the range of 98% -104%.%为了拓展流动注射化学发光法在食品检测中的应用,利用草醛能够增敏NaOH介质中高锰酸钾—鲁米诺化学发光体系的发光信号的特点,建立了化学发光测定香草醛的方法.文中考察了介质浓度、发光试剂浓度等因素对发光体系信号的影响,确定了测定香草醛的最佳条件:介质NaOH浓度为0.20 mol/L,高锰酸钾浓度为3.0×10-5 mol/L,鲁米诺浓度为7.0×10-5mol/L.在优化实验条件下,体系的发光强度与香草醛浓度在5.0×10-8~3.0×10-6g/mL内呈线性关系,标准曲线:△I=7.1883 ×108C(g/mL) +71.767 4(r =0.994 2).对5.0×10-7 g/mL的香草醛平行测定11次,相对偏差为1.3%,其检出限为1.1 × 10-8g/mL.建立了测定香草醛的流动注射化学发光法新方法,并成功地测定了片剂中香

  14. PERMANGANATE TREATMENT OF DNAPLS IN REACTIVE BARRIERS AND SOURCE ZONE FLOODING SCHEMES

    The goals of this study are (1) to elucidate the basic mechanisms by which potassium permanganate oxidizes common chlorinated solvents, various constituents in aqueous solution, and porous-medium solids, and (2) to assess the potential for chemical oxidation by potassium permanga...

  15. Flotation isolation of uranium(6) from acidic waste waters with the use of potassium soaps of dialkylphosphinic acids

    The applicability of potassium soaps of dialkylphosphinic acids of R2POOH type where R is C3-C10 hydrocarbon radical as uranium flotation collectors is investigated. Under similar conditions the degree of uranium flotation isolation from nitrate solutions is notably higher than from chloride solutions, and from the latter is higher than from sulfate solutions. The method of uranium flotation isolation using dialkylphosphinic acid soaps was tested in synthetic solutions simulating acid (pH = 2-5) waste waters. Possibility of flotation method to isolate 95-99% of uranium from acid solutions using potassium soaps of dialkylphosphinic acids is demonstrated

  16. Uses of the potassium permanganate to eliminate copper cyanide from waste water resulting from a lixiviation plant in a gold mine (I); Aplicacion del permanganato potasico para la eliminacion de cianuros de cobre en aguas residuales de la planta de lixiviacion en una mina de oro (I)

    Sancho, J. P.; Fernandez, B.; Ayala, J.; Garcia, M. P.; Lavandeira, A.

    2009-07-01

    The use of cyanide in the hydrometallurgical and chemical industries has led to the emergence of a major environmental problem due to its high toxicity. Te wastewater generated at these plants is hazardous to the environment and therefore must be managed properly. For this purpose, they undergo detoxification processes after lodes from the plant are accumulated in waste-resistant containment ponds that mast be waterproof to prevent environmental disasters from leakages or massive flood. This work shows the results obtained in laboratory tests carried out with plant waters and demonstrates the efficacy of potassium permanganate as an oxidant of cyanide wastewater from a gold hydrometallurgical plant. In the process the destruction of the copper cyanide complexes is solution is achieved and copper metal ions are eliminated through precipitation mostly as hydroxide. (Author) 28 refs.

  17. 宽浓度范围水碘的碱性高锰酸钾氧化光度测定方法研究%Method for the determination of broad concentration range of iodide in drinking water by spectrophotometry with alkaline potassium permanganate oxidation

    张亚平; 黄嫣红; 林丽卿

    2009-01-01

    目的 建立一种简单的光度比色法,测定饮用水中宽浓度范围碘化物.方法 水中碘化物在碱性条件下经高锰酸钾氧化为碘酸盐,在酸性条件下用亚硝酸钠除去过量氧化剂并以氨基磺酸加尿素除去过量亚硝酸盐后,与碘化钾作用生成I_2并与淀粉显色进行光度比色测定,测定体系中加适量本底微量碘及氯化钠,解决在水样含碘量<100 μg/L时碘-淀粉显色与水碘浓度不成线性比例的显色灵敏度问题.结果 本方法标准曲线线性范围为0~1200 μg/L(r=0.9998);水碘检测限为4μg/L;对含碘量76.6、207.8、560.4μg/L水样各重复测定6次,相对标准偏差(RSD)均<1%;8份不同含碘量水样加标回收率范围为97.0%(485.2/500.0)~102.5%(102.5/100.0);试剂中加亚铁盐消除了水中6价铬(Cr~(6+))的干扰,加溴化钾及亚硝酸钠消除了水中溴酸盐(BrO_3~-)的干扰,水中含0.2 mg/L Cr~(6+)、0.1 mg/L BrO_3~-不干扰测定.结论 本方法操作简单,检测浓度范围宽,具有良好的精密度和准确度,适于应用.%Objective To establish a simple photometric method for the determination of broad concentration range of iodide in drinking water. Methods Iodide in water was oxidized with potassium permanganate in alkaline medium to generate iodate. After excessive oxidant was eliminated with nitrite sodium in acidic medium condition and excessive nitrite was eliminated with a mixture of aminosulfonic acid and urea, iodate was used to react with potassium iodide reagent to form I_2 which further reacted with amylum to form color complex. The absorbance was determined by photometry. In determination reagent system suitable amount of iodide that acted as background and sodium chloride were added to solve the problem of the chromogenic sensitivity, i.e., when iodine concentration was < 100 μg/L in water sample the degree of iodine-starch complex color change could not be in linear proportion to the concentration of iodine in

  18. Experimental pain in human temporal muscle induced by hypertonic saline, potassium and acidity

    Jensen, K; Norup, M

    1992-01-01

    The study was aimed at developing a reference model for experimental pain and tenderness in the human temporal muscle by the local injection of hypertonic saline, potassium chloride and acidic phosphate buffer, using isotonic saline as control. The design was randomized and double-blind. Twenty...... healthy subjects had 0.2 ml test solution injected into one temporal muscle and saline into the other. Following each injection, pain was rated on a 10-point ordinal scale and pressure-pain thresholds were measured every minute for 10 min by a pressure algometer. Hypertonic saline (n = 11) and potassium...... chloride (n = 12) induced significantly more pain than isotonic saline (ANOVA, p less than 0.0001). Compared to control injections, hypertonic saline and potassium chloride induced a significant reduction in pressure-pain threshold (ANOVA, p less than 0.0001 and p less than 0.05). Forty-eight percent of...

  19. Permeability of solutes through cellophanes grafted with vinyl monomers. I. Diffusion of potassium chloride, urea, and uric acid

    The diffusive permeability of potassium chloride, urea, and uric acid through cellophanes grafted with acrylamide, acrylic acid, styrene, and N-vinyl-2-pyrrolidone by γ-ray irradiation was studied. The diffusive permeability coefficients of the permeants through the grafted cellophanes were increased with increase in hydration of the grafted membranes, except for the permeation of potassium chloride through cellophanes grafted with acrylic acid. The permeation of potassium chloride, urea, and uric acid through the various grafted cellophanes is explained by the free volume concept of homogeneously water-swollen membranes. However, the behavior of the permeation of potassium chloride through cellophane grafted with acrylic acid deviated from that of nonionic membranes because of the contribution of the electrical interaction between electrolyte and charge of the membrane. 4 figures, 3 tables

  20. [Influence of pH on Kinetics of Anilines Oxidation by Permanganate].

    Wang, Hui; Sun, Bo; Guan, Xiao-hong

    2016-02-15

    To investigate the effect of pH on the oxidation of anilines by potassium permanganate, aniline and p-Chloroaniline were taken as the target contaminants, and the experiments were conducted under the condition with potassium permanganate in excess over a wide pH range. The reaction displayed remarkable autocatalysis, which was presumably ascribed to the formation of complexes by the in situ generated MnOx and the target contaminants on its surface, and thereby improved the oxidation rate of the target contaminants by permanganate. The reaction kinetics was fitted with the pseudo-first-order kinetics at different pH to obtain the pseudo-first-order reaction constants (k(obs)). The second-order rate constants calculated from permanganate concentration and k,b, increased with the increase of pH and reached the maximum near their respective pKa, after which they decreased gradually. This tendency is called parabola-like shaped pH-rate profile. The second-order rate constants between permanganate and anilines were well fitted by the proton transfer model proposed by us in previous work. PMID:27363148

  1. Electrochromic iridium oxide films: Compatibility with propionic acid, potassium hydroxide, and lithium perchlorate in propylene carbonate

    Wen, Rui-Tao; Niklasson, Gunnar A.; Granqvist, Claes G.

    2013-01-01

    Porous thin films of It oxide were prepared by reactive dc magnetron sputtering onto unheated substrates. The crystallite size was similar to 5 nm, and a small amount of unoxidized Ir was present. The electrochromic performance was studied by optical transmittance measurements and cyclic voltammetry applied to films in aqueous and non-aqueous electrolytes, specifically being 1 M propionic acid, 1 M potassium hydroxide (KOH), and 1 M lithium perchlorate in propylene carbonate (Li-PC). Cyclic v...

  2. Permanganate Reduction of Savannah River Site Actual Waste Samples for Strontium and Actinides Removal

    The authors investigated the performance of permanganate treatment for the removal of strontium and actinides from actual high-level waste. Researchers also conducted comparison tests with monosodium titanate (MST) as a means of evaluating the permanganate performance. Tests utilized a Tank 37H/44F composite waste solution. Personnel significantly increased the concentration of alpha emitting actinides in the waste by the addition of acidic americium/curium solution (F-Canyon Tank 17.1 solution), which contained a significant quantity of plutonium, and neptunium-237 stock solution. Tests examined three permanganate treatment options

  3. Evaluation of Uncertainty in Determination of Permanganate Index in Water%水中高锰酸盐指数测定不确定度的评定

    何平; 周侣艳; 余海霞; 赵佳佳

    2012-01-01

    合理评定测量结果的不确定度是分析实验室必须重视的问题。通过酸性高锰酸钾氧化法测定水中高锰酸盐指数的实例,确立高锰酸盐指数测量的不确定度数学模型。讨论了高锰酸盐指数测定值不确定度的各种因素,对各不确定度分量进行分析和量化,求得其扩展不确定度。结果表明,影响其测量不确定度的主要因素是测量熏复性。在高锰酸盐指数值为4.17 mg/L的水样测定中,扩展不确定度为0.08 mg/L。%The reasonable evaluation of uncertainty in measurement results is a matter of especial importance for assay laboratory.Through the example of determination permanganate index in water by acidic potassium permanganate method,the mathematical model of uncertainty is established.Based on analysis and quantification of the factors influencing the uncertainty in measurement result of permanganate index in water,the expanded uncertainty is calculated.The result shows that repeatability of testing is the key factor affecting the uncertainty.When the permanganate index is 4.17mg/L,the expanded uncertainty is 0.08mg/L.

  4. [Inhibition of oxygen free radicals in potassium channels of cardiac myocytes and the action of salvianolic acid A].

    Bao, G

    1993-10-01

    By using the patch clamp technique, the effect of oxygen free radicals on the single potassium channels of cardiac papillary muscle cells were studied, as well as the action of salvianolic acid A. It was found that xanthane-xanthane oxidase generated oxygen free radicals could apparently inhibited the unitary currents of the single potassium channel activity. This inhibition was reversed by salvianolic acid A, which is an effective component extracted from Salvia miltiorrhiza. PMID:8168213

  5. Kinetics and Mechanistic Study of Permanganate Oxidation of Fluorenone Hydrazone in Alkaline Medium

    Fawzy, Ahmed; Saleh A. Ahmed; Althagafi, Ismail I.; Morad, Moataz H.; Khairou, Khalid S

    2016-01-01

    The oxidation kinetics of fluorenone hydrazone (FH) using potassium permanganate in alkaline medium were measured at a constant ionic strength of 0.1 mol dm−3 and at 25°C using UV/VIS spectrophotometer. A first-order kinetics has been monitored in the reaction of FH with respect to [permanganate]. Less-than-unit order dependence of the reaction on [FH] and [OH−] was revealed. No pronounced effect on the reaction rate by increasing ionic strength was recorded. Intervention of free radicals was...

  6. Usnic acid potassium salt: an alternative for the control of Biomphalaria glabrata (Say, 1818.

    Mônica C B Martins

    Full Text Available In Brazil, the snail Biomphalaria glabrata is the most important vector of schistosomiasis due to its wide geographical distribution, high infection rate and efficient disease transmission. Among the methods of schistosomiasis control, the World Health Organization recommends the use of synthetic molluscicides, such as niclosamide. However, different substances of natural origin have been tested as alternatives for the control or eradication of mollusks. The literature describes the antitumor, antimicrobial and antiviral properties of usnic acid as well as other important activities of common interest between medicine and the environment. However, usnic acid has a low degree of water solubility, which can be a limiting factor for its use, especially in aquatic environments, since the organic solvents commonly used to solubilize this substance can have toxic effects on aquatic biota. Thus, the aim of the present study was to test the potassium salt of usnic acid (potassium usnate with regard to molluscicidal activity and toxicity to brine shrimp (Artemia salina. To obtain potassium usnate, usnic acid was extracted with diethyl ether isolated and purified from the lichen Cladonia substellata. Biological assays were performed with embryos and adult snails of B. glabrata exposed for 24 h to the usnate solution solubilized in dechlorinated water at 2.5; 5 and 10 µg/ml for embryos, 0.5; 0.9; 1;5 and 10 µg/ml for mollusks and 0.5; 1; 5; 10 µg/ml for A. salina. The lowest lethal concentration for the embryos and adult snails was 10 and 1 µg/ml, respectively. No toxicity to A. salina was found. The results show that modified usnic acid has increased solubility (100% without losing its biological activity and may be a viable alternative for the control of B. glabrata.

  7. Usnic Acid Potassium Salt: An Alternative for the Control of Biomphalaria glabrata (Say, 1818)

    Lima, Vera L. M.; Pereira, Eugênia C.; Falcão, Emerson P. S.; Melo, Ana M. M. A.; da Silva, Nicácio Henrique

    2014-01-01

    In Brazil, the snail Biomphalaria glabrata is the most important vector of schistosomiasis due to its wide geographical distribution, high infection rate and efficient disease transmission. Among the methods of schistosomiasis control, the World Health Organization recommends the use of synthetic molluscicides, such as niclosamide. However, different substances of natural origin have been tested as alternatives for the control or eradication of mollusks. The literature describes the antitumor, antimicrobial and antiviral properties of usnic acid as well as other important activities of common interest between medicine and the environment. However, usnic acid has a low degree of water solubility, which can be a limiting factor for its use, especially in aquatic environments, since the organic solvents commonly used to solubilize this substance can have toxic effects on aquatic biota. Thus, the aim of the present study was to test the potassium salt of usnic acid (potassium usnate) with regard to molluscicidal activity and toxicity to brine shrimp (Artemia salina). To obtain potassium usnate, usnic acid was extracted with diethyl ether isolated and purified from the lichen Cladonia substellata. Biological assays were performed with embryos and adult snails of B. glabrata exposed for 24 h to the usnate solution solubilized in dechlorinated water at 2.5; 5 and 10 µg/ml for embryos, 0.5; 0.9; 1;5 and 10 µg/ml for mollusks and 0.5; 1; 5; 10 µg/ml for A. salina. The lowest lethal concentration for the embryos and adult snails was 10 and 1 µg/ml, respectively. No toxicity to A. salina was found. The results show that modified usnic acid has increased solubility (100%) without losing its biological activity and may be a viable alternative for the control of B. glabrata. PMID:25375098

  8. Preparation of anionic clay-birnessite manganese oxide composites by interlayer oxidation of oxalate ions by permanganate

    Arulraj, James; Rajamathi, Michael

    2013-02-01

    Oxalate intercalated anionic clay-like nickel zinc hydroxysalt was obtained starting from nickel zinc hydroxyacetate, Ni3Zn2(OH)8(OAc)2·2H2O, by anion exchange. The intercalated oxalate species was reacted with potassium permanganate in such a way that the layered manganese oxide formed was within the interlayer region of the anionic clay resulting in a layered composite in which the negative charges on the birnessite type manganese oxide layers compensate the positive charges on the anionic clay layers. Birnessite to anionic clay ratio could be varied by varying the reaction time or the amount of potassium permanganate used.

  9. Vers l'abandon de la mesure de l'oxydabilité au permanganate en eaux de piscines

    Rosin, Christophe; Gassilloud, Benoît; Mehut, Romain; Munoz, Jean-François

    2009-01-01

    International audience Le contrôle sanitaire des eaux de piscines prévoit que « la teneur en substance oxydable au permanganate de potassium à chaud en milieu alcalin exprimée en oxygène ne doit pas dépasser de plus de 4 mg.L-1 la teneur de l'eau de remplissage des bassins ». En l'absence de méthodes normalisées, la pratique actuelle des laboratoires se décompose entre mesure de l'oxydabilité (en milieu alcalin ou acide) et du carbone organique total (COT). Ces pratiques différentes abouti...

  10. The effect of potassium iodide on the production of acid phosphatase by Sporothrix schenckii

    P. S. Grover

    2003-06-01

    Full Text Available The present study was undertaken to find out the in vitro effect of potassium iodide (KI on the production of acid phosphatase by fully characterized strain of S.schenckii isolated from a patient of Cutaneous Sporotrichosis. The enzyme acid phosphatase was estimated during the 3 phases of growth of S.schenckii, without and with three concentrations of KI incorporated in the culture medium. In the control and in the test proper, with various concentrations of KI, no adverse effect of KI was observed on the production of acid phosphatase in early and mid log phase of fungal growth. Whereas in the exponential phase in test proper, there was a statistical significant decrease in the enzyme production with 0.8% and 3.2% of KI. The low activity at 0.8% and 3.2% KI indicates that KI has inhibitory effect on the growth of S.schenckii and has led to decrease in the activity of the enzyme. (Med J Indones 2003; 12: 65-8 Keywords: S.schenckii, acid phosphatase, potassium iodide

  11. Scientific Opinion on the safety and efficacy of sorbic acid and potassium sorbate when used as technological additives for all animal species

    EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP

    2014-07-01

    Full Text Available Sorbic acid and potassium sorbate are already authorised for use in food and feed as preservatives. Sorbic acid and its potassium salt are safe when used at the maximum proposed dose in feed for pigs, poultry, dogs and cats (2 500 (sorbic acid and 3 400 (potassium sorbate mg/kg and young ruminants (6 700 (sorbic acid and 9 000 (potassium sorbate mg/kg. This conclusion is extended to all animal species. The contribution of potassium sorbate to the potassium supply of animals should be considered when formulating diets or when it is included in water for drinking. As no measurable residues of sorbic acid or potassium ion are expected in edible products of food-producing animals, sorbic acid and potassium sorbate are considered safe for the consumers when used up to the maximum proposed level. Sorbic acid and potassium sorbate are skin, eye and respiratory tract irritants. The use of sorbic acid and its potassium salt in animal nutrition would not pose a risk to the environment. As sorbic acid and potassium sorbate are authorised food additives within the EU for use as preservatives, it is reasonable to expect that the effect in food will be observed in feed when it is used at comparable concentrations and under similar conditions. The FEEDAP Panel has reservations about the effectiveness of sorbic acid and its potassium salt as preservatives in complete feedingstuffs with a moisture content of ≤ 12 %. Equivalent concentrations for sorbic acid and potassium sorbate when used as preservatives in water for drinking should be specified.

  12. Electrodialysis recovery of boric acid and potassium hydroxide from eluates of SWC facilities at NPP with VVER

    To extract boric acid and potassium hydroxide from regenerates of SWC-2-46 facilities, an electrodialysis-sorption process has been devised consisting of the following operations: separation of boron-alkaline regenerate solution into desorbate and wash water; filling of desalination and concentration chambers, respectively, with desorbate and was water of electrodialysis equipment; production of boric acid and potassium hydroxide from desorbate by electrodialysis; removal of chloride-ion from boric acid solution on ion-exchange filter AB-17-18. The flow-sheet was tested and boron containing alkaline regeneration solutions were recovered from Novovoronezh NPP

  13. Production of Potassium and Calcium Hydroxide, Compost and Humic Acid from Sago (Metroxylon sagu Waste

    C. P. Auldry

    2009-01-01

    Full Text Available Problem statement: Agriculture waste such as Sago Waste (SW has a potential to cause pollution when the waste is discarded into rivers. In order to add value to SW, a study was conducted to produce potassium and calcium hydroxide, compost and Humic Acid (HA from SW. Approach: The SW was air-dried and some grinded. The grinded SW was incinerated at 600°C. Potassium and calcium hydroxide was extracted by dissolving the ash in distilled water at a ratio of 1:500 (ash: water, equilibrated for 24 h at 150 rpm using a mechanical shaker and filtered. The ungrinded SW was used for compost production. The compost was produced by mixing SW (80% + chicken feed (10% + chicken dung slurry (5% + molasses (5%. Results: The hydroxide extracted from ash of SW was used to isolate HA of composted SW. The molarity and pH of the hydroxide were 0.002M and 10 respectively. Calcium (42.88 mg kg-1 and potassium (29.51 mg kg-1 content were high in the hydroxide compared with other elements. The compost took about 60 days to mature. There was an increased in pH, ash, Cation Exchange Capacity (CEC and HA and a decreased in temperature, C/N ratio, C/P ratio and organic matter. The hydroxide was able to extract 1% of HA from the composted SW. A comparison between the yields of HA extracted from the composted SW using the hydroxide of the SW and that of the analytical grade showed no statistically difference. The chemical characteristics of HA from the composted SW were in standard range. Conclusion: Potassium and calcium hydroxide, compost and HA can be produced from sago waste. Low morality of the hydroxide is able to produce good quality of HA from composted sago waste. The HA can be reconstituted with K and Ca from potassium and calcium hydroxide to produce K-Ca-humate and this needs to be investigated as a form of organic based fertilizer.

  14. Protonated form: the potent form of potassium-competitive acid blockers.

    Hua-Jun Luo

    Full Text Available Potassium-competitive acid blockers (P-CABs are highly safe and active drugs targeting H+,K+-ATPase to cure acid-related gastric diseases. In this study, we for the first time investigate the interaction mechanism between the protonated form of P-CABs and human H+,K+-ATPase using homology modeling, molecular docking, molecular dynamics and binding free energy calculation methods. The results explain why P-CABs have higher activities with higher pKa values or at lower pH. With positive charge, the protonated forms of P-CABs have more competitive advantage to block potassium ion into luminal channel and to bind with H+,K+-ATPase via electrostatic interactions. The binding affinity of the protonated form is more favorable than that of the neutral P-CABs. In particular, Asp139 should be a very important binding site for the protonated form of P-CABs through hydrogen bonds and electrostatic interactions. These findings could promote the rational design of novel P-CABs.

  15. Effect of Oxalic Acid on Potassium Release from Typical Chinese Soils and Minerals

    TU Shu-Xin; GUO Zhi-Fen; SUN Jin-He

    2007-01-01

    Oxalic acid plays an important role in improving the bioavailability of soil nutrients. Batch experiments were employed to examine the influences of oxalic acid on extraction and release kinetics of potassium (K) from soils and minerals along with the adsorption and desorption of soil K+. The soils and minerals used were three typical Chinese soils, black soil (Mollisol), red soil (Ultisol), and calcareous alluvial soil (Entisol), and four K-bearing minerals, biotite, phlogopite, muscovite, and microcline. The results showed that soil K extracted using 0.2 mol L-1 oxalic acid was similar to that using 1 mol L-1 boiling HNO3. The relation between K release (y) and concentrations of oxalic acid (c) could be best described logarithmically as y=a+blogc, while the best-fit kinetic equation of K release was y=a +b√t, where a and b are the constants and t is the elapsed time. The K release for minerals was ranked as biotite> phlogopite>> muscovite> microcline and for soils it was in the order: black soil> calcareous alluvial soil> red soil. An oxalic acid solution with low pH was able to release more K from weathered minerals and alkaline soils. Oxalic acid decreased the soil K+ adsorption and increased the soil K+ desorption, the effect of which tended to be greater at lower solution pH, especially in the red soil.

  16. Fast and efficient green synthesis of thiosulfonate S-esters by microwave-supported permanganate oxidation of symmetrical disulfides

    Thi, Luu Thi Xuan; Thi Nguyen, Thao-Tran; Le, Thach Ngoc;

    2015-01-01

    Potassium permanganate absorbed on copper(II) sulfate pentahydrate has been found to be an efficient, inexpensive, and green oxidation agent for the synthesis of “symmetrical” thiosulfonate S-esters by oxidation of the corresponding symmetrical disulfides. The oxidation reactions were carried out...

  17. Quantitation of Pyrantel Pamoate in Pharmaceuticals Using Permanganate by Visible Spectrophotometry

    Rajendraprasad, N.; Basavaiah, K.

    2014-03-01

    Two simple, accurate and precise spectrophotometric methods are developed and validated for the assay of pyrantel pamoate (PP) in pharmaceuticals. The methods employ the oxidative property of potassium permanganate (KMnO4) in acidic and alkaline conditions. In the first method (method A), PP is converted into its free base, pyrantel (PR), and treated with known excess of KMnO4 in acidic condition followed by the measurement of unreacted KMnO4 at 550 nm. Method B is based on the registration of absorbance of green colored chromogen formed due to the reduction of KMnO4 by PP in alkaline condition. The methods obeyed Beer's law over a range of 1-20 μg/ml in inverse manner, and 0.75-15 μg/ml for method A and method B, respectively, with apparent molar absorptivity values of 1.05ṡ104 and 2.85ṡ104 lṡmol-1ṡcm-1. The optical parameters such as limits of detection (LOD), quantification (LOQ), and the Sandell sensitivity values are also reported. The accuracy and precision of the methods are assessed on intra- and inter-day basis. A recovery study by standard addition procedure is also carried out for further assurance of accuracy. The developed methods are successfully applied to determine PP in tablets. The results are more satisfactory as per current ICH guidelines.

  18. Potassium fulvate as co-interpenetrating agent during graft polymerization of acrylic acid from cellulose.

    Ghazy, Mohamed B M; El-Hai, Farag Abd; Mohamed, Magdy F; Essawy, Hisham A

    2016-10-01

    Grafting polymerization of acrylic acid onto cellulose in presence of potassium fulvate (KF) as a co-interpenetrating agent results enhanced water sorption compared to materials prepared similarly in its absence. The insertion of potassium fulvate (KF) did not affect the grafting process and is thought to proceed in parallel to the graft polymerization via intensive polycondensation reactions of its function groups (-COOH and OH) with COOH of the monomer and OH groups of cellulose. The combination of graft copolymerization and polycondensation reactions is assumed to produce interpenetrating network structure. Fourier transform infrared (FTIR) confirmed successful incorporation within the network structure which is an evidence for formation of interpenetrating network. The obtained structures showed homogeneous uniform surface as revealed by scanning electron microscopy (SEM). The obtained superabsorbent possessed high water absorbency 422 and 48.8g/g in distilled water and saline (0.9wt.% NaCl solution), respectively, and enhanced water retention even at elevated temperatures as revealed by thermogravimetric analysis (TGA). This could be explained by the high content of hydrophilic groups. The new superabsorbents proved to be efficient devices for controlled release of fertilizers which expands their use in agricultural applications. PMID:27370745

  19. Determination of free acid by standard addition method in potassium thiocyanate

    The free acid content of solutions containing hydrolyzable ions has been determined potentiometrically by a standard addition method. Two increments of acid are added to the sample in 1M potassium thiocyanate solution. The sample concentration is calculated by solution of three simultaneous Nernst equations. The method has been demonstrated for solutions containing Al3+, Cr3+, Fe3+, Hg2+, Ni2+, Th4+, or UO22+ with a metal-to-acid ratio of < 2.5. The method is suitable for determination of 10 μmoles acid in 10 mL total volume. The accuracy can be judged from the agreement of the Nernst slopes found in the presence and absence of hydrolyzable ions. The relative standard deviation is < 2.5%. The report includes a survey of experiments with thermometric, pH, and Gran plot titrations in a variety of complexants, from which the method was evolved. Also included is a literature survey of sixty references, a discussion of the basic measurements, and a complete analytical procedure

  20. Determination of free acid by standard addition method in potassium thiocyanate

    Baumann, E W

    1982-06-01

    The free acid content of solutions containing hydrolyzable ions has been determined potentiometrically by a standard addition method. Two increments of acid are added to the sample in 1M potassium thiocyanate solution. The sample concentration is calculated by solution of three simultaneous Nernst equations. The method has been demonstrated for solutions containing Al/sup 3 +/, Cr/sup 3 +/, Fe/sup 3 +/, Hg/sup 2 +/, Ni/sup 2 +/, Th/sup 4 +/, or UO/sub 2//sup 2 +/ with a metal-to-acid ratio of < 2.5. The method is suitable for determination of 10 ..mu..moles acid in 10 mL total volume. The accuracy can be judged from the agreement of the Nernst slopes found in the presence and absence of hydrolyzable ions. The relative standard deviation is < 2.5%. The report includes a survey of experiments with thermometric, pH, and Gran plot titrations in a variety of complexants, from which the method was evolved. Also included is a literature survey of sixty references, a discussion of the basic measurements, and a complete analytical procedure.

  1. Comparison of official methods for 'readily oxidizable substances' in propionic acid as a food additive.

    Ishiwata, H; Takeda, Y; Kawasaki, Y; Kubota, H; Yamada, T

    1996-01-01

    The official methods for 'readily oxidizable substances (ROS)' in propionic acid as a food additive were compared. The methods examined were those adopted in the Compendium of Food Additive Specifications (CFAS) by the Joint FAO-WHO Expert Committee on Food Additives, FAO, The Japanese Standards for Food Additives (JSFA) by the Ministry of Health and Welfare, Japan, and the Food Chemicals Codex (FCC) by the National Research Council, USA. The methods given in CFAS and JSFA are the same (potassium permanganate consumption). However, by this method, manganese (VII) in potassium permanganate was readily reduced to colourless manganese(II) with some substances contained in the propionic acid before reacting with aldehydes, which are generally considered as 'readily oxidizable substances', to form brown manganese (IV) oxide. The FCC method (bromine consumption) for 'ROS' could be recommended because it was able to obtain quantitative results of 'ROS', including aldehydes. PMID:8647299

  2. Effect of metallic dopants on potassium acid phthalate (KAP) single crystals

    Chithambaram, V. [Department of Physics, AMET University, Kanathur-603 112, Chennai (India); Jerome Das, S. [Department of Physics, Loyola College, Chennai-600 034 (India); Arivudai Nambi, R. [Department of Chemistry, AMET University, Kanathur, Chennai-603 112 (India); Srinivasan, K. [Department of Physics, R. M. K. Engineering College, Kavaraipettai-601 206 (India); Krishnan, S., E-mail: skrishnanjp@gmail.co [Department of Physics, R. M. K. Engineering College, Kavaraipettai-601 206 (India)

    2010-06-15

    Optically transparent single crystals of Cu{sup 2+} and Zn{sup 2+} doped potassium acid phthalate (KAP) were grown in aqueous solution by slow evaporation technique at room temperature. Single crystal X-ray diffraction analysis confirmed the changes in the lattice parameters of the doped crystals. The presence of functional groups in the crystal lattice has been determined qualitatively by Fourier transform infrared (FTIR) analysis. Optical absorption studies revealed that the doped crystals possess very low absorption in the entire visible region. The dielectric constant has been studied as a function of frequency for the doped crystals at temperatures viz., 328, 348, 368 K. Further the influence of metal dopants on the dielectric behaviour has been studied which clearly exhibited the ferroelectric properties of the crystal.

  3. Sorption of Ba and Sr on potassium-copper, -nickel, -cobalt, -zinc hexacyanoferrate(II) and DOWEX-50 from hydrochloric and sulfuric acid solutions

    We have determined sorption coefficients of Ba and Sr on nickel-potassium hexacyanoferrate(II) (NiNF), cobalt-potassium hexacyanoferrate(II) (CoNF), cupric-potassium hexacyanoferrate(II) (CuNF) and on the ion exchange resin (Dowex-50) in the sulfuric and hydrochloric acid solutions. The results indicate that Ba is strongly sorbed on the investigated hexacyanoferrates and Dowex-50 from sulfuric acid while it is sorbed from the hydrochloric acid at the low acid concentrations. The sorption mechanism of Sr from H2SO4 and HCl is similar, at all presented acid concentrations the values of the coefficients for Sr are rather low. (author)

  4. Catalyzing the oxidation of sulfamethoxazole by permanganate using molecular sieves supported ruthenium nanoparticles.

    Zhang, Jing; Sun, Bo; Huang, Yuying; Guan, Xiaohong

    2015-12-01

    This study developed a heterogeneous catalytic permanganate oxidation system with three molecular sieves, i.e., nanosized ZSM-5 (ZSM-5A), microsized ZSM-5 (ZSM-5B) and MCM-41, supported ruthenium nanoparticles as catalyst, denoted as Ru/ZSM-5A, Ru/ZSM-5B and Ru/MCM-41, respectively. The presence of 0.5gL(-1) Ru/ZSM-5A, Ru/ZSM-5B and Ru/MCM-41 increased the oxidation rate of sulfamethoxazole (SMX) by permanganate at pH 7.0 by 27-1144 times. The catalytic performance of Ru catalysts toward SMX oxidation by permanganate was strongly dependent on Ru loading on the catalysts. The X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) analyses confirmed that Ru catalyst acted as an electron shuttle in catalytic permanganate oxidation process. Ru(III) deposited on the surface of catalysts was oxidized by permanganate to its higher oxidation state Ru(VII), which could work as a co-oxidant with permanganate to decompose SMX and was then reduced to its initial tri-valence. During the successive runs, Ru/ZSM-5A could not maintain its catalytic activity due to the deposition of MnO2, which was the reductive product of permanganate, onto the surface of Ru/ZSM-5A. Thus, the regeneration of partially deactivated Ru catalysts by reductant NH2OH⋅HCl or ascorbic acid was proposed. Ru/ZSM-5A regenerated by NH2OH⋅HCl displayed comparable catalytic ability to its virgin counterpart, while ascorbic acid could not completely remove the deposited MnO2. A trace amount of leaching of Ru into the reaction solution was also observed, which would be ameliorated by improving the preparation conditions in the future study. PMID:26196405

  5. Production of Potassium and Calcium Hydroxide, Compost and Humic Acid from Sago (Metroxylon sagu) Waste

    C. P. Auldry; Ahmed, O. H.; A. M.N. Muhamad; H.M. Nasir; M. Jiwan

    2009-01-01

    Problem statement: Agriculture waste such as Sago Waste (SW) has a potential to cause pollution when the waste is discarded into rivers. In order to add value to SW, a study was conducted to produce potassium and calcium hydroxide, compost and Humic Acid (HA) from SW. Approach: The SW was air-dried and some grinded. The grinded SW was incinerated at 600°C. Potassium and calcium hydroxide was extracted by dissolving the ash in distilled water at a ratio of 1:500 (ash: water), equilibrated for ...

  6. Treatability assessment of polycyclic aromatic hydrocarbons contaminated marine sediments using permanganate, persulfate and Fenton oxidation processes.

    Shih, Yu-Jen; Binh, Nguyen Thanh; Chen, Chiu-Wen; Chen, Chih-Feng; Dong, Cheng-Di

    2016-05-01

    Various chemical oxidation techniques, such as potassium permanganate (KMnO4), sodium persulfate (Na2S2O8), Fenton (H2O2/Fe(2+)), and the modified persulfate and Fenton reagents (activated by ferrous complexes), were carried out to treat marine sediments that were contaminated with polycyclic aromatic hydrocarbons (PAHs) and dredged from Kaohsiung Harbor in Taiwan. Experimental results revealed that KMnO4 was the most effective of the tested oxidants in PAH degradation. Owing to the high organic matter content in the sediment that reduced the efficiencies of Na2S2O8 and regular Fenton reactions, a large excess of oxidant was required. Nevertheless, KH2PO4, Na4P2O7 and four chelating agents (EDTA, sodium citrate, oxalic acid, and sodium oxalate) were utilized to stabilize Fe(II) in activating the Na2S2O8 and Fenton oxidations, while Fe(II)-citrate remarkably promoted the PAH degradation. Increasing the molecular weight and number of rings of PAH did not affect the overall removal efficiencies. The correlation between the effectiveness of the oxidation processes and the physicochemical properties of individual PAH was statistically analyzed. The data implied that the reactivity of PAH (electron affinity and ionization potential) affected its treatability more than did its hydrophobicity (Kow, Koc and Sw), particularly using experimental conditions under which PAHs could be effectively oxidized. PMID:26915591

  7. Acidity-controlled selective oxidation of alpha-pinene, isolated from Indonesian pine's turpentine oils (pinus merkusii)

    Masruri; Farid Rahman, Mohamad; Nurkam Ramadhan, Bagus

    2016-02-01

    Alpha-pinene was isolated in high purity from turpentine oil harvested from Pinus merkusii plantation. The recent investigation on selective oxidation of alpha-pinene using potassium permanganate was undertaken under acidic conditions. The result taught the selective oxidation of alpha-pinene in acidic using potassium permanganate lead to the formation of 2-(3-acetyl-2,2-dimethylcyclobutyl)acetaldehyde or pinon aldehyde. The study method applied reaction in various different buffer conditions i.e. pH 3, 4, 5, and 6, respectively, and each reaction product was monitored using TLC every hour. Product determination was undertaken on spectrometry basis such as infrared, ultra violet-visible, gas chromatography- and liquid chromatography-mass spectrometry.

  8. 地表水中高锰酸盐指数分析的质量控制%Quality control in analysis of permanganate index

    舒彩凤

    2013-01-01

      为了提高高锰酸盐指数项目测定的准确性,通过实验分析,从高锰酸钾的校正系数、蒸馏水空白值、水浴的温度、加热的时间、样品酸度、滴定的过程、滴定终点的判断等因素加以分析,找出其影响测定结果的原因。实验操作中,应注重上述因素的质量控制,以提高测试的准确性。%In order to improve the determination of permanganate index , Through experimental analysis , The correction coefficient from potassium permanganate, distilled water blank value, water bath temperature, heating time, acidity of sample, titration, titration and other factors analysis, To find out the influencing measurement result .The experimental operation, Should pay attention to the factor of the quality control, In order to improve the accuracy of the test .

  9. Influence of Humic Acid on Interaction of Ammonium and Potassium Ions on Clay Minerals

    ZHANG Wen-Zhao; CHEN Xiao-Qin; ZHOU Jian-Min; LIU Dai-Huan; WANG Huo-Yan; DU Chang-Wen

    2013-01-01

    Interaction of ammonium (NH4+) and potassium (K+) is typical in field soils.However,the effects of organic matter on interaction of NH4+ and K+ have not been thoroughly investigated.In this study,we examined the changes in major physicochemical properties of three clay minerals (kaolinite,illite,and montmorillonite) after humic acid (HA) coating and evaluated the influences of these changes on the interaction of NH4+ and K+ on clay minerals using batch experiments.After HA coating,the cation exchange capacity (CEC) and specific surface area (SSA) of montmorillonite decreased significantly,while little decrease in CEC and SSA occurred in illite and only a slight increase in CEC was found in kaolinite.Humic acid coating significantly increased cation adsorption and preference for NH4+,and this effect was more obvious on clay minerals with a lower CEC.Results of Fourier transform infrared spectrometry analysis showed that HA coating promoted the formation of H-bonds between the adsorbed NH4+ and the organo-mineral complexes.HA coating increased cation fixation capacity on montmorillonite and kaolinite,but the opposite occurred on illite.In addition,HA coating increased the competitiveness of NH4+ on fixation sites.These results showed that HA coating affected both the nature of clay mineral surfaces and the reactions of NH4+ and K+ with clay minerals,which might influence the availability of nutrient cations to plants in field soils amended with organic matter.

  10. The First-in-Class Potassium-Competitive Acid Blocker, Vonoprazan Fumarate: Pharmacokinetic and Pharmacodynamic Considerations.

    Echizen, Hirotoshi

    2016-04-01

    Vonoprazan fumarate (Takecab) is a first-in-class potassium-competitive acid blocker that has been available in the market in Japan since February 2015. Vonoprazan is administered orally at 20 mg once daily for the treatment of gastroduodenal ulcer, at 20 and 10 mg once daily for the treatment and secondary prevention of reflux esophagitis, respectively, at 10 mg once daily for the secondary prevention of low-dose aspirin- or non-steroidal anti-inflammatory drug-induced peptic ulcer, and at 20 mg twice daily in combination with clarithromycin and amoxicillin for the eradication of Helicobacter pylori. It inhibits H(+),K(+)-ATPase activities in a reversible and potassium-competitive manner with a potency of inhibition approximately 350 times higher than the proton pump inhibitor, lansoprazole. Vonoprazan is absorbed rapidly and reaches maximum plasma concentration at 1.5-2.0 h after oral administration. Food has minimal effect on its intestinal absorption. Oral bioavailability in humans remains unknown. The plasma protein binding of vonoprazan is 80% in healthy subjects. It distributes extensively into tissues with a mean apparent volume of distribution of 1050 L. Being a base with pKa of 9.6 and with acid-resistant properties, vonoprazan is highly concentrated in the acidic canaliculi of the gastric parietal cells and elicited an acid suppression effect for longer than 24 h after the administration of 20 mg. The mean apparent terminal half-life of the drug is approximately 7.7 h in healthy adults. Vonoprazan is metabolized to inactive metabolites mainly by cytochrome P450 (CYP)3A4 and to some extent by CYP2B6, CYP2C19, CYP2D6, and SULT2A1. A mass balance study showed that 59 and 8% of the orally administered radioactivity was recovered in urine as metabolites and in an unchanged form, respectively, indicating extensive metabolism. Genetic polymorphism of CYP2C19 may influence drug exposure but only to a clinically insignificant extent (15-29%), according to the