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).

引用

页码：255 / 260

页数：6

共 31 条

[1]

Brdicka R., 1933, COLLECT CZECH CHEM C, V5, P112, DOI [DOI 10.1135/CCCC19330112, 10.1135/cccc19330112]

[2] ELECTRON-SPIN RESONANCE STUDY OF AUTOXIDATION OF HYDRAZINE, HYDROXYLAMINE, AND CYSTEINE CATALYZED BY COBALT(II) CHELATE COMPLEX OF 3,10,17,24-TETRASULPHOPHTHALOCYANINE [J].