M. B. Melwanki, J. Seetharamappa
2003
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Journal
Indian journal of environmental health
Abstract
Isothipendyl hydrochloride is proposed as a sensitive and selective reagent for the rapid spectrophotometric determination of chromium(VI). The reagent instantaneously gives a red coloured species on reaction with chromium(VI) in phosphoric acid medium which exhibits maximum absorbance at 510 nm with Sandell's sensitivity of 2.28 ng cm(-2). Beer's law is valid over the concentraction range of 0.1-1.9 mg/l with an optimum concentration range of 0.2-1.7 mg/l. The method has been successfully applied to the analysis of chromium in environmental samples.