IS 3025 : Part 30 : 1988 Methods of Sampling and Test (physical and chemical) for Water and Wastewater - Part 30 : Bromide

1 Scope

This standard prescribes two methods for determination ofbromide, Bromides in the samples are oxidized to brormine inPresence of phenol red and subsequently phenol red is brominated byaddition of chloramine-T. The brominated compound thus produced isreddish to violet depending upon its concentration. Theconcentration of chloramine-T and the timing of reaction beforedechlorination are critical. The colour reaching is done eithervisually or using a spectrophotometer. In case of any difference ofopinion, the spectrophotometric method shall be the referee method.