Automated Determination of Cd2+ and Pb2+ in Natural Waters with Sequential Injection Analysis Device Using Differential Pulse Anodic Stripping Voltammetry

被引：0
作者：
Zhiwei Lai
Fangyuan Lin
Yipeng Huang
Yiru Wang
Xi Chen
机构：
[1] Xiamen University,MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering
[2] Xiamen University,State Key Laboratory of Marine Environmental Science
来源：
Journal of Analysis and Testing | 2021年 / 5卷
关键词：
Electrochemical flow device; Differential pulse anodic stripping voltammetry; Cd; Pb; Water samples;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An electrochemical flow device has been developed for the determination of heavy metal ions (HMI) in water using multi-walled carbon nanotubes (MWCNTs)/Nafion(NA)/Hg electrode, by mean of differential pulse anodic stripping voltammetry coupled with sequential injection analysis. The accuracy of the determination was ensured by the great electrical conductivity of MWCNTs and the high adsorption capacity of Hg. NA was used for MWCNTs immobilization for the long-term application of the electrode. The mercury film was cleaned after determination and another one would form during deposition. A lower limit of detection and a wider determination range of Cd2+ and Pb2+ could be achieved using the automatically analytical device combining with the MWCNTs/NA/Hg-modified electrode. The real-time monitoring of Cd2+ and Pb2+ in fresh water using this device continued for 10 days. The results indicated that the method was potential for on-site and real-time determination of HMI in water samples.
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页码：60 / 68
页数：8
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