FIELD: chemistry.
SUBSTANCE: method involves treating a water sample with potassium iodide solution; successive measurement of optical density of a chlorine dioxide sample at pH=7 and chlorite ions and chlorine dioxide at pH=2.5; determining from calibrated curves concentration of chlorine dioxide at pH=7 and total concentration of chlorite ions and chlorine dioxide at pH=2.5; calculating concentration of the chlorite ions using the formula:
EFFECT: invention enables to cut analysis time and increases reliability of results thereof.
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Authors
Dates
2013-10-10—Published
2012-04-20—Filed