Multivariate optimization of square wave voltammetry using bismuth film electrode to determine atrazine

被引：36

作者：

Bia, Gonzalo ^{[1
,2
]}

Borgnino, Laura ^{[1
,2
,3
]}

Ortiz, Patricia I. ^{[2
,3
]}

Pfaffen, Valeria ^{[2
,3
]}

机构：

[1] CICTERRA CONICET, RA-5000 Cordoba, Argentina

[2] Univ Nacl Cordoba, RA-5000 Cordoba, Argentina

[3] INFIQC CONICET, Ciudad Univ, RA-5000 Cordoba, Argentina

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 203卷

关键词：

Atrazine; Square wave voltammetry; Bismuth electrode film; Experimental design; Desirability profile; STRIPPING VOLTAMMETRY; EXPERIMENTAL-DESIGN; METALS; SOIL;

D O I：

10.1016/j.snb.2014.07.003

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A rapid and simple square wave voltammetry method (SWV) for atrazine determination with bismuth film electrode using chemometrics was developed. Different variables such as buffer pH and SWV frequency, pulse height and step potential were screened in a 24 full factorial design. The significant variables were optimized by using a central composite design (CCD) combined with desirability function (DF). Optimum conditions were set as follow: buffer pH 2.3, frequency 300 Hz, pulse height 0.09 V and step potential -0.0024 V. Under these optimum conditions the method has a linear response over (1.8-7.5) x 10(-6) mol L-1 with detection and quantification limits of 5.9 x 10(-7) and 1.8 x 10(-6) mol L-1, respectively. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：396 / 405

页数：10

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