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. 1999 Feb;19(1-2):175-81.
doi: 10.1016/s0731-7085(98)00133-2.

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

Y Guo  1 , A R Guadalupe
Affiliations

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

Y Guo et al. J Pharm Biomed Anal. 1999 Feb.

Abstract

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.

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