Differential Pulse Voltammetric Determination of Paraquat Using a Bismuth-Film Electrode

被引：72

作者：

de Figueiredo-Filho, Luiz Carlos S. ^{[1
]}

dos Santos, Vagner B. ^{[1
]}

Janegitz, Bruno Campos ^{[1
]}

Guerreiro, Thiago Brito ^{[1
]}

Fatibello-Filho, Orlando ^{[1
]}

Faria, Ronald Censi ^{[1
]}

Marcolino-Junior, Luiz Humberto ^{[2
]}

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：

ELECTROANALYSIS | 2010年 / 22卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

Differential pulse voltammetry; Bismuth-film electrode (BiFE); Environmental samples; Paraquat; Pesticides; ANODIC-STRIPPING VOLTAMMETRY; SQUARE-WAVE VOLTAMMETRY; TRACE HEAVY-METALS; DIQUAT; MERCURY; POTENTIALITIES; PERFORMANCE; HERBICIDE; VANADIUM; COBALT;

D O I：

10.1002/elan.200900553

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A bismuth-film electrode (BiFE) ex situ electrochemically deposited onto a copper substrate has been presented for paraquat determination. The bismuth film was electrochemically deposited at an applied potential of 0.18 V vs. Ag/AgCl (3.0 M KCl) for 200 s. The analytical curve was linear in the paraquat concentration range from 6.6 x 10(-7) M to 4.8 x 10(-5) M with a limit of detection of 9.3 x 10(-8) M. The method presented satisfactory results at a confidence level of 95% and the performance was evaluated in water samples.

引用

页码：1260 / 1266

页数：7

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