Development of a carbon nanotubes paste electrode modified with crosslinked chitosan for cadmium(II) and mercury(II) determination

被引：99
|
作者：
Janegitz, Bruno C. [1 ]
Figueiredo-Filho, Luiz Carlos S. [1 ]
Marcolino-Junior, Luiz H. [2 ]
Souza, Silveria P. N. [1 ]
Pereira-Filho, Edenir R. [1 ]
Fatibello-Filho, Orlando [1 ]
机构：
[1] Univ Fed Sao Carlos, Dept Quim, Ctr Ciencias Exatas & Tecnol, BR-13560970 Sao Carlos, SP, Brazil
[2] Univ Fed Parana, Dept Quim, BR-81531990 Curitiba, Parana, Brazil
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2011年 / 660卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
Cadmium(II); Mercury(II); Carbon nanotubes; Cross-linked chitosan; Anodic stripping voltammetry; Glutaraldehyde; STRIPPING VOLTAMMETRIC DETERMINATION; HEAVY-METAL IONS; WASTE-WATER; SPECTROPHOTOMETRIC DETERMINATION; ENVIRONMENTAL-SAMPLES; AQUEOUS-SOLUTIONS; COMPLEXING AGENT; FILM; NAFION; COPPER(II);
D O I：
10.1016/j.jelechem.2011.07.001
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A functionalized carbon nanotubes paste electrode modified with cross-linked chitosan for the determination of trace amounts of cadmium(II) and mercury(II) by linear anodic stripping voltammetry is described. Under optimal experimental conditions, the peak current was linear in the Cd(II) concentration range from 5.9 x 10(-8) to 1.5 x 10(-6) mol L(-1) with a detection limit of 9.8 x 10(-9) mol L(-1) and, for Hg(II) from 6.7 x 10(-9) to 8.3 x 10(-8) mol L(-1) with a detection limit of 2.4 x 10(-9) mol L(-1). The proposed method was successfully applied for the determination of Hg(II) in natural and industrial wastewater samples. and Cd(II) in sediments, human urine, natural, and industrial wastewater samples. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：209 / 216
页数：8
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