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New study on direct detection of trace copper in the presence of ionic surfactant
Gong Shuguo,Xia Jianjun,Wei Wanzhi,Jian Yin,Zeng Jinxiang ,Liu Xiaoying ,Zhai Xiurong
College of Chemistry and Chemical Engineering, Hunan University
*Correspondence author
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Funding: 教育部博士点基金，教育部科学技术研究重点项目（No.20020532007，03123）
Opened online:29 November 2005
Accepted by: none
Citation: Gong Shuguo,Xia Jianjun,Wei Wanzhi.New study on direct detection of trace copper in the presence of ionic surfactant [OL]. [29 November 2005] http://en.paper.edu.cn/en_releasepaper/content/3868
 
 
A new method for the direct detection of trace copper in the presence of ionic surfactant was developed, based on the response of differential pulse anodic stripping voltammetry at a gold electrode modified with self-assembled monolayer of 2-mercaptobenzimidazole(MBI).Experimental results indicated that MBI monolayer could prevent electrode surface fouling by ionic surfactant and that after preconcentration, copper down to 0.01 mmol l-1 in the presence of 0.5 mg ml-1 hexadecyl trimethyl ammonium bromide could be detected. The features of the new method were to be simple, sensitive and low-cost.
Keywords:direct detection, trace copper, ionic surfactant, modified electrode, stripping voltammetry.
 
 
 

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