Voltammetric behavior of cysteine and metallothionein on cobalt(II) tetrasulfonated phthalocyanine modified glassy carbon electrodes

被引：45

作者：

Limson, J

Nyokong, T

机构：

[1] Department of Chemistry, Rhodes University

来源：

ELECTROANALYSIS | 1997年 / 9卷 / 03期

关键词：

metallothionein; cysteine; voltammetry; phthalocyanine; cobalt;

D O I：

10.1002/elan.1140090314

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Cysteine, and rat Cd,Zn-metallothionein (Cd,Zn-MT) have been studied electrochemically at glassy carbon electrodes modified with cobalt(II) tetrasulfonated phthalocyanine, [(CoTSPc)-T-II](4-), where Pc(2-)= phthalocyanine dianion. The electrode was modified by electrodeposition of [(CoTSPc)-T-II](4-). The anodic currents for the oxidation of cysteine on these electrodes are observed at 0.82 V (vs. Ag/AgCl in acidic media. The anodic currents for the oxidation of Cd,Zn-MT are observed at 0.90 V at pH 8.4 (Tris buffer).

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页码：255 / 260

页数：6

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