ELECTROSTATIC ADSORPTION OF GOLD (Ⅲ) ON CARBON PASTE ELECTRODE AND ITS VOLTAMMETRIC DETERMINATION

Chinese Journal of Applied Chemistry ›› 1992, Vol. 0 ›› Issue (2): 76-78.

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ELECTROSTATIC ADSORPTION OF GOLD (Ⅲ) ON CARBON PASTE ELECTRODE AND ITS VOLTAMMETRIC DETERMINATION

Peng Tuzhi, Wang Guoshun, Zhu Peilin

Department of Chemistry, Hangzhou University, Hangzhou 310028

Received:1991-03-21 Revised:1991-05-17 Published:1992-04-10 Online:1992-04-10

Abstract

Abstract: A sensitive method for determination of gold in ore using cathodic stripping voltammetry is reported.The method is based on the adsorption of AuCl₄^- on the carbon paste surface at+1.4V (vs Ag/AgCl) in 0.1mol/L HCl solution.In the concentration range of 2～100ng/mL the stripping current and concentration of gold appeared a linear relationship. The detection limit is 0.2ng/mL after 5 min accumulation. The effects of different parameters on the response were examined.

Key words: carbon paste electrode, adsorptive stripping voltammetry, gold

Peng Tuzhi, Wang Guoshun, Zhu Peilin. ELECTROSTATIC ADSORPTION OF GOLD (Ⅲ) ON CARBON PASTE ELECTRODE AND ITS VOLTAMMETRIC DETERMINATION[J]. Chinese Journal of Applied Chemistry, 1992, 0(2): 76-78.

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ELECTROSTATIC ADSORPTION OF GOLD (Ⅲ) ON CARBON PASTE ELECTRODE AND ITS VOLTAMMETRIC DETERMINATION

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