Studies on the Complex of Bismuth-Xylenoi Orange by Adsorptive Stripping Voltammetry

Abstract

Abstract: In this paper,the determination of the complex of bismuth-xylenol orange by adsorp-tive stripping voltammetry in sodium citrate-HCl medium (pH 5) is proposed.This complex was accumulated on the surface of the mercury electrode in an open circuit.The composition ratio of bismuth and xylenol orange is 1:2.The adsorption character at mercury electrode accords with that of the isothermal line of Frumkin.The adsorption coefficient (β=2.8×10⁶) and the attractive factor (v=0.52) were determined.The mechanism of the complex wave was investigated.This method was applied to the determination of trace amounts of bismuth in human hair and human serum with satisfactory results.

Key words: Bismuth, Xylenol orange, Absorptive stripping voltammetry

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WANG Zhen-Hui, ZHOU Shu-Ping, LIU Xian-Zhuang . Studies on the Complex of Bismuth-Xylenoi Orange by Adsorptive Stripping Voltammetry[J]. Chem. J. Chinese Universities, 1992, 13(8): 1060.

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Studies on the Complex of Bismuth-Xylenoi Orange by Adsorptive Stripping Voltammetry

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