水溶液体系电积砷的析AsH3过程分析

journal6 ›› 2001, Vol. 22 ›› Issue (3): 9-12.

水溶液体系电积砷的析AsH₃过程分析

(湖南大学环境保护研究所, 湖南长沙 410082)

出版日期:2001-09-15 发布日期:2013-01-05
作者简介:陈维平( 1959- ) ,男, 湖南株洲人,湖南大学环境保护研究所博士,教授, 主要从事电化学行为研究; 徐中榆( 1932- ) , 男,上海市人, 湖南大学环境保护研究所教授,博导, 主要从事电化学行为研究.
基金资助:
国家自然科学基金资助项目( 29577274) ; 湖南省自然科学基金资助项目( [ 94] 209)

Analysis and Study on Evolving AsH₃ Process of Electrodepositing Arsenic in Aqueous Solution System

( Institute for Environmental Protection, Hunan Univ. , Changsha 410082, Hunan China)

Online:2001-09-15 Published:2013-01-05

摘要/Abstract

摘要：计算了水溶液中As(Ⅲ)的理论溶解度, 分析了电沉积过程 AsH3的形成机理.研究指出, As( (Ⅲ) 在碱性水溶液中的溶解度比在酸性或中性水溶液中大得多, 因此,在碱性溶液中电沉积砷更有利, 防止产生 AsH₃的有效途径是提高氢的析出电势.

关键词： 砷, 水溶液, 电沉积, AsH₃

Abstract: Electrodeposition is one of the clean methods to prepare elementary arsenic. In this paper, the theoretical solubility of As(Ⅲ) in aqueous solutiou was calculated, and the mechanism of forming AsH₃ in electrodeposition was analyzed. The research reveals that the solubility of As(Ⅲ) is significantly larger in aqueous alkali solution than in aqueous acid or neutral solution, which results that electrodepositing arsenic in alkali solution is much easier and that the efficient method to prevent forming AsH₃ is to enhance the electric potential of evolving hydrogen.

Key words: arsenic, aqueous solution, electrodeposition, AsH₃

陈维平, 徐仲榆, 陈范才, 李仲英, 杨霞, 李彩亭, 彭雁宾, 边可君, 牛秋雅. 水溶液体系电积砷的析AsH₃过程分析[J]. journal6, 2001, 22(3): 9-12.

CHEN Wei-Ping, XU Zhong-Yu, CHEN Fan-Cai, LI Zhong-Ying, YANG Xia, LI Cai-Ting, PENG Yan-Bin, BIAN Ke-Jun, NIU Qiu-Ya. Analysis and Study on Evolving AsH₃ Process of Electrodepositing Arsenic in Aqueous Solution System[J]. journal6, 2001, 22(3): 9-12.

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水溶液体系电积砷的析AsH₃过程分析

Analysis and Study on Evolving AsH₃ Process of Electrodepositing Arsenic in Aqueous Solution System

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