2006•Precious MetalsRequires access

Study on Spectrophotometric Determination of Platinum with 5-(H-acidazo)-Rhodanine

Han Yong

Abstract

The color reaction of platinum with 5-(H-acidazo)-rhodanine(HAR)was studied.In the presence of hydrochloric acid solution,HAR can react with platinum to form a stable 2∶ 1 complex.The molar absorptivity is 1.06×105 L·mol-1·cm-1 at 540nm.Beer's law is obeyed in the range of 0～ 30μg/25mL.This method can be applied to the determination of platinum in catalysts with good results.

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Key concepts: Rhodanine, Platinum, Molar absorptivity, Chemistry, Hydrochloric acid, Nuclear chemistry, Spectrophotometry, Inorganic chemistry