Preparation of an electrochemical sensor based on BiOCl-MWCNT for Zn2+, Cd2+ and Pb2+ detection

被引：0

作者：

Huang D.-H. ^{[1
]}

Sun Z.-W. ^{[1
]}

Chen J.-Y. ^{[2
]}

Lin Q. ^{[1
]}

Ye R.-H. ^{[1
]}

机构：

[1] Fujian - Indonesia Joint Research and Development Center of Marine Food, Fujian Polytechnic Normal University, Fuqing

[2] College of Life Sciences, Fujian Normal University, Fuzhou

来源：

Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2021年 / 35卷 / 06期

关键词：

Bismuth chloride oxide-multi-walled carbon nanotubes; Differential pulse anodic stripping voltammetry; Electrochemical sensors; Heavy metal ions;

D O I：

10.3969/j.issn.1003-9015.2021.06.017

中图分类号：

学科分类号：

摘要：

A bismuth oxychloride multi-walled carbon nanotube composite (BiOCl-MWCNT) was used to prepare electrochemical sensors for simultaneous detection of Zn2+, Cd2+ and Pb2+ contents. BiOCl-MWCNT was in-situ prepared, and electrochemical sensors were obtained through drop-coating into films. Buffer, pH, deposition potential and deposition time were optimized for simultaneous detection of Zn2+, Cd2+ and Pb2+ contents in samples by differential pulse anodic stripping voltammetry (DPASV). The results show that BiOCl-MWCNT has a large specific surface area and excellent electrical conductivity. Deposition potential -1.40 V and deposition time 120 s was obtained at pH 4.25 (acetic acid buffer), and Zn2+, Cd2+ and Pb2+ are detected simultaneously by DPASV with a wide linear concentration range and high sensitivity. This method was successfully applied in the detection of Zn2+, Cd2+ and Pb2+ contents in mineral water, which provides a new way for the detection of Zn2+, Cd2+ and Pb2+ contents in food. © 2021, Editorial Board of "Journal of Chemical Engineering of Chinese Universities". All right reserved.

引用

页码：1082 / 1089

页数：7

共 27 条

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