Voltammetric determination of phytochelatins using copper solid amalgam electrode

被引：52
|
作者：
Yosypchuk, B [1 ]
Sestáková, I [1 ]
Novotny, L [1 ]
机构：
[1] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, CR-18223 Prague 8, Czech Republic
来源：
TALANTA | 2003年 / 59卷 / 06期
关键词：
phytochelatins; cathodic stripping; copper solid amalgam electrode;
D O I：
10.1016/S0039-9140(03)00023-7
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Voltammetric determination of synthetically prepared phytochelatins (gamma-Glu-Cys)(2)Gly (PC2) and (gamma-Glu-Cys)(3)Gly (PC3) has been studied using new type of copper solid amalgam electrode. The determination, based on the formation of cuprous complexes in buffer pH 8.1, is suitable for concentrations of PC in the range 10-100 nmol l(-1). Reproducibility, employing electrochemical cleaning of the electrode surface, was statistically evaluated. The achieved limit of detection (2.1-2.6 x 10(-9) mol l(-1) for DCV measurement) together with the robust character of the electrode offer its use for detection of PCs in separated extracts of real samples. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1253 / 1258
页数：6
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