Premium
New Methods for the Colorimetric Determination of Halogen Residuals. Part I. Iodine, Iodide, and Iodate
Author(s) -
Black A. P.,
Whittle G. P.
Publication year - 1967
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1967.tb03377.x
Subject(s) - iodate , iodine , iodide , halogen , chemistry , potassium iodate , chlorine , inorganic chemistry , stoichiometry , ion , organic chemistry , alkyl
This article discusses a rapid, sensitive, and accurate colorimetric method that has been developed for the determination of iodine residuals in water in the presence of free and combined chlorine. The article also discusses a colorimetric method for the determination of iodide ion (I‐) residuals that has been developed using potassium peroxymonosulfate, KHS0 5 , first to oxidize the iodide ion to iodine. Similarly, the iodate ion (I0 3 ‐), may be determined colorimetrically by the controlled addition of iodide ions and acid and the resulting production of elemental I 2 . The reaction is stoichiometric and the concentration of iodate ion may be related to the iodine liberated.