COLORIMETRIC SENSOR FOR PPB LEVEL ARSENIC ESTIMATION IN DRINKING WATER

摘要

Described herein is an improved colorimetric sensor kit for ppb level arsenic estimation in drinking water consisting of three reagent mixtures, viz. aqueous solution of Potassium Permanganate; Sulfamic Acid powder containing 1-5 % (w/w) L-ascorbic acid; Zinc powder containing 1-5 % (w/w) Sodium Borohydride powder; a detector strip soaked with Mercuric Bromide and a wide-mouth bottle