Stripping voltammetric determination of Pb(II) and Cd(II) based on the multiwalled carbon nanotubes-Nafion-bismuth modified glassy carbon electrodes

被引：53

作者：

Wang, Na ^{[1
]}

Dong, Xiandui ^{[1
]}

机构：

[1] Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun, Peoples R China

来源：

ANALYTICAL LETTERS | 2008年 / 41卷 / 07期

关键词：

anodic stripping voltammetry; bismuth; carbon nanotubes; Cd(II); Nafion; Pb(II);

D O I：

10.1080/00032710802052817

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, a new method for the simultaneous determination of Pb(II) and Cd(II) on the multiwalled carbon nanotubes (MWNT)-Nafion-bismuth modified glassy carbon electrode (GCE) using square-wave anodic stripping voltammetry has been studied. Scanning electron microscopy was used to investigate the characteristics of the MWNT-Nafion-bismuth modified GCE. Well-defined sharp stripping peaks were observed in the determination of Pb(II) and Cd(II) simultaneously on this electrode. Under optimized conditions, the lowest detectable concentrations were 50 ng/l for Pb(II) and 80 ng/l for Cd(II) under a 10 min preconcentration. The attractive performances of MWNT-Nafion-bismuth modified GCE demonstrated its application for a simple, rapid, and harmless determination of trace heavy metals.

引用

页码：1267 / 1278

页数：12

共 31 条

[1] Fibrinogen-coated bismuth film electrodes for voltammetric analysis of lead and cadmium using the batch injection analysis [J].