Sensitive square wave anodic stripping voltammetric determination of Cd2+ and Pb2+ ions at Bi/Nafion/overoxidized 2-mercaptoethanesulfonate-tethered polypyrrole/glassy carbon electrode

被引：52

作者：

Chen, Li ^{[1
]}

Li, Zou ^{[1
]}

Meng, Yue ^{[1
]}

Zhang, Pei ^{[1
]}

Su, Zhaohong ^{[1
,2
]}

Liu, Ying ^{[1
]}

Huang, Yi ^{[1
]}

Zhou, Yaping ^{[1
]}

Xie, Qingji ^{[1
]}

Yao, Shouzhuo ^{[1
]}

机构：

[1] Hunan Normal Univ, Coll Chem & Chem Engn, Minist Educ China, Key Lab Chem Biol & Tradit Chinese Med Res, Changsha 410081, Hunan, Peoples R China

[2] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 191卷

基金：

中国国家自然科学基金;

关键词：

Square wave anodic stripping voltammetry; Overoxidation of polypyrrole; 2-Mercaptoethanesulfonate; Bismuth film electrode; Pb2+; Cd2+; BISMUTH-FILM ELECTRODES; COMPOSITE ELECTRODES; TRACE-METALS; ELECTROANALYSIS; POLYTHIOPHENE; CONDUCTIVITY; POLYANILINE; CADMIUM(II); LEAD;

D O I：

10.1016/j.snb.2013.09.084

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Square wave anodic stripping voltammetry was applied to detect Pb2+ and Cd2+ ions at a glassy carbon electrode modified with overoxidized 2-mercaptoethanesulfonate (MES)-tethered polypyrrole, Nafion and Bi. The PPy-MES interaction was examined by quartz crystal microbalance. Under optimum conditions (5-min preconcentration at -1.2V vs. SCE in pH 4.0 acetate buffer containing 300 mu g L-1 Bi3+), the linear calibration curves ranged from 0.05 to 35 mu g L-1 for Pb2+ and 0.1 to 25 mu g L-1 for Cd2+, respectively, and the limits of detection (S/N = 3, S is the signal and N is the noise level) were 0.03 mu g L-1 for Pb2+ and 0.04 mu gL(-1) for Cd2+. This method was successfully applied for Pb2+ and Cd2+ analysis in real water samples. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：94 / 101

页数：8

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