Errors in determination of residual oxidants in chlorinated sea water

Underestimates in residual chlorine determinations by iodimetric titration are thought to be caused by partial oxidation of iodide ion to iodate by bromine and hypobromous acid. Increasing the acidity and potassium iodide concentration, or the use of a back titration procedure, eliminate the spuriou...

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Bibliographic Details
Published inEnvironmental science & technology Vol. 11; no. 10; pp. 992 - 994
Main Authors Carpenter, James H, Moore, Cynthia A, Macalady, Donald L
Format Journal Article
LanguageEnglish
Published American Chemical Society 01.10.1977
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Summary:Underestimates in residual chlorine determinations by iodimetric titration are thought to be caused by partial oxidation of iodide ion to iodate by bromine and hypobromous acid. Increasing the acidity and potassium iodide concentration, or the use of a back titration procedure, eliminate the spuriously low results that have falsely indicated a large and rapid chlorine demand in unpolluted sea water.
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ISSN:0013-936X
1520-5851
DOI:10.1021/es60133a002