Determination of trace Pb(II), Cd(II) and Zn(II) using differential pulse stripping voltammetry without Hg modification

作     者：LIN Qi LIN HongMei ZHANG YuanHui RONG MingCong KE HuiXian TANG XinHua CHEN Xi 

作者机构：Key Lab of Global Change and Marine-Atmospheric Chemistry SOA Third Institute of Oceanography SOA Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen Standard Scientific Instrument Co. Ltd. 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2013年第56卷第12期

页      面：1749-1756页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：supported by the National Natural Scientific Foundation of China(21175112) the Fund of Key Laboratory of Global Change and Marine-Atmospheric Chemistry,SOA,(GCMAC 1204) the Fujian Key Projects of Science and Technology(2011YZ0001-1) 

主　　题：bismuth film electrode differential pulse stripping voltammetry tea leaves tea infusion 

摘      要：In this work,we reported a simultaneous determination approach for Pb(II),Cd(II)and Zn(II)atμg L 1concentration levels using differential pulse stripping voltammetry on a bismuth film electrode(BiFE).The BiFE could be prepared in situ when the sample solution contained a suitable amount of Bi(NO)3,and its analytical performance was evaluated for the simultaneous determination of Pb(II),Cd(II)and Zn(II)in *** determination limits were found to be 0.19μg L 1for Zn(II),and0.28μg L 1for Pb(II)and Cd(II),with a preconcentration time of 300 *** BiFE approach was successfully applied to determine Pb(II),Cd(II)and Zn(II)in tea leaf and infusion samples,and the results were in agreement with those obtained using an atomic absorption spectrometry *** Hg usage,the in situ preparation for BiFE supplied a green and acceptability sensitive method for the determination of the heavy metal ions.