Preconcentration and voltammetry of mercury on a functionalized sol-gel thin film modified glassy carbon electrode

被引：29
|
作者：
Guo, YZ [1 ]
Guadalupe, AR [1 ]
机构：
[1] Univ Puerto Rico, Dept Chem, San Juan, PR 00931 USA
来源：
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS | 1999年 / 19卷 / 1-2期
关键词：
chemically modified electrodes; sensors; sol-gel films; mercury; electroanalysis;
D O I：
10.1016/S0731-7085(98)00133-2
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A functionalized sol-gel thin film modified glassy carbon electrode has been prepared for the determination of mercury. The tetrasulfide in the sol-gel matrix has a high affinity for mercury species. The chemically integrated functional groups in the sol-gel precursor ensure a high chemical and mechanical stability of the modified electrodes, and therefore a stable and reproducible analytical performance. By medium exchange anodic stripping voltammetry, this modified electrode allows reliable, low cost and interference-free determination of mercury. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：175 / 181
页数：7
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