The method is to heat a sample in a boiling water-bath with a known amount of potassium permanganate and sulphuric acid for a fixed period time (10 min). Part of the permanganate will be reduced by oxidizable material in the sample. The consumed permanganate can be determined by addition of an excess of oxalatesolution, followed by titration with permanganate. The method applies to waters having a chloride ion concentration of less than 300 mg/L. Samples having a permanganate index over 10 mg/L should be diluted before analysis. The lower limit of the optimum range of the test is 0.5 mg/L. [1]
The permanganate index method is not recommended for waste water because some organic compounds are not oxidized or incompletely oxidized.
^"Water quality -- Determination of permanganate index". ISO. Retrieved 23 November 2011.
April 12, 2024
permanganate, index, also, analysis, water, chemistry, environmental, monitoring, sampling, methods, water, sampling, station, permanganate, index, assessment, water, quality, involves, detection, oxidation, potassium, permanganate, acid, medium, under, condit. See also Analysis of water chemistry Environmental monitoring Sampling methods and Water sampling station The permanganate index is an assessment of water quality It involves the detection of oxidation by potassium permanganate in an acid medium under hot conditions The method is to heat a sample in a boiling water bath with a known amount of potassium permanganate and sulphuric acid for a fixed period time 10 min Part of the permanganate will be reduced by oxidizable material in the sample The consumed permanganate can be determined by addition of an excess of oxalate solution followed by titration with permanganate The method applies to waters having a chloride ion concentration of less than 300 mg L Samples having a permanganate index over 10 mg L should be diluted before analysis The lower limit of the optimum range of the test is 0 5 mg L 1 The permanganate index method is not recommended for waste water because some organic compounds are not oxidized or incompletely oxidized See also editPermanganateReferences edit Water quality Determination of permanganate index ISO Retrieved 23 November 2011 Retrieved from https en wikipedia org w index php title Permanganate index amp oldid 1072085238, wikipedia, wiki, book, books, library,
