E. Diacu et al., CATALYTIC POLAROGRAPHIC CURRENTS IN THE NICKEL-GLUTATHIONE SYSTEM .2.ADSORPTION EFFECTS AND REACTION-MECHANISM OF NICKEL REDUCTION, Revue Roumaine de Chimie, 38(12), 1993, pp. 1397-1404
The nature of the nickel prewaves produced by glutathione (Glu) is dis
cussed taking into account previous data on complex formation 1 as wel
l as experimental data connected to the interface effects and reaction
kinetics. It is shown that the first prewave involves adsorbed Glu, w
hereas the second one has a bulk-character. Although high concentratio
n of Glu are required, the electrode processes are still of catalytic
type since at pH < 8 only a minor part of Glu bind nickel ion giving r
educible complexes.