Studies on Electrochemical Analysis of Precious Metals(Ⅷ) --Determination of Trace-Platinum by ASV

Abstract

Abstract: A new method of determination of trace-platinum by anodic stripping voltammetry (ASV) has been established. By using the cotton cellulose xanthate (CCX) separation column to separate the main impurities of Au³⁺, Pd²⁺, etc, the filtrate of sample was treated by aqua regia and controlled in the optimun supporting electrolysis system of 0.3mol·L^-1H₂SO₄-Hg(Ⅱ)-3.0 × 10^-4mol·L^-1 KMnO₄ for the purpose. The detection limit of Pt was 0.5ppb. The method was applied to the determination of platinum in several complicated samples, such as industrial waste water, refined mineral and chloridized residue. Its coefficient variations were 0.086, 0.041 and 0.027 respectively. The recovery of platinum in industrial waste water was in the range of 92~104%.

Key words: Precious metal, Platinum, Anodic stripping voltammetry

TrendMD:

Zhang Yuxiang, Lu Fan, Zhang Zhide. Studies on Electrochemical Analysis of Precious Metals(Ⅷ) --Determination of Trace-Platinum by ASV[J]. Chem. J. Chinese Universities, 1988, 9(12): 1290.

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Studies on Electrochemical Analysis of Precious Metals(Ⅷ) --Determination of Trace-Platinum by ASV

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