Anodic stripping voltammetry of antimony using gold nanoparticle-modified carbon screen-printed electrodes

被引：93

作者：

Dominguez Renedo, Olga ^{[1
]}

Arcos Martinez, M. Julia ^{[1
]}

机构：

[1] Univ Burgos, Dept Quim, Area Quim Analit, Fac Ciencias, E-09001 Burgos, Spain

来源：

ANALYTICA CHIMICA ACTA | 2007年 / 589卷 / 02期

关键词：

gold nanoparticles; screen-printed electrodes; antimony; anodic stripping voltammetry;

D O I：

10.1016/j.aca.2007.02.069

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Carbon screen-printed electrodes (CSPE) modified with gold nanoparticles present an interesting alternative in the determination of antimony using differential pulse anodic stripping voltammetry. Metallic gold nanoparticles deposits have been obtained by direct electrochemical deposition. Scanning electron microscopy measurements show that the electrochemically synthesized gold nanoparticles are deposited in aggregated form. Any undue effects caused by the presence of foreign ions in the solution were also analyzed to ensure that common interferents in the determination of antimony by ASV. The detection limit for Sb(III) obtained was 9.44 x 10(-10) M. In terms of reproducibility, the precision of the above mentioned method in %R.S.D. values was calculated at 2.69% (n = 10). The method was applied to determine levels of antimony in seawater samples and pharmaceutical preparations. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：255 / 260

页数：6

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