Premium
Voltammetric behavior of cysteine and metallothionein on cobalt ( II ) tetrasulfonated phthalocyanine modified glassy carbon electrodes
Author(s) -
Limson Janice,
Nyokong Tebello
Publication year - 1997
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140090314
Subject(s) - phthalocyanine , cobalt , inorganic chemistry , glassy carbon , chemistry , electrode , electrochemistry , cysteine , cyclic voltammetry , organic chemistry , enzyme
Cysteine, and rat Cd, Zn‐metallothionein (Cd, Zn‐MT) have been studied electrochemically at glassy carbon electrodes modified with cobalt (II) tetrasulfonated phthalocyanine, [Co II TSPc] 4− , where Pc(2‐) = phthalocyanine dianion. The electrode was modified by electrodeposition of [Co II TSPc] 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).