New aspects of the oxidation–reduction mechanism of the ascorbic–dehydroascorbic acid system on the dropping mercury electrode

1989 ◽  
Vol 85 (7) ◽  
pp. 1567 ◽  
Author(s):  
Juan J. Ruiz ◽  
José M. Rodríguez-Mellado ◽  
Manuel Domínguez ◽  
Antonio Aldaz
Keyword(s):  
Mercury Electrode ◽  
Dehydroascorbic Acid ◽  
Acid System ◽  
Reduction Mechanism ◽  
Oxidation Reduction ◽  
Dropping Mercury Electrode

Reduction of the Ni(II) ion at the dropping mercury electrode from amoxicillin water solution

1991 ◽  
Vol 56 (1) ◽  
pp. 152-156 ◽  
Author(s):  
Milenko R. Erceg ◽  
Vera P. Kapetanović ◽  
Desanka Ž. Sužnjević
Keyword(s):  
Complex Formation ◽  
Double Layer ◽  
Rate Constant ◽  
Electrical Double Layer ◽  
Water Solution ◽  
Mercury Electrode ◽  
Reduction Mechanism ◽  
Dropping Mercury Electrode ◽  
Heterogenous Reaction

The nature of polarographic precurrents of Ni(II) ion in the presence of amoxicillin as well as the behaviour of amoxicillin in the electrical double layer has been investigated. It has been established the formation of the mono complex of Ni(II) ion with amoxicillin adsorbed at the mercury. The reduction mechanism of the complex has been proposed. Taking into account the effect of the double layer on the kinetics, the rate constant of the heterogenous reaction of the complex formation has been found to be 5.8 · 103 l mol-1 s -1.

Sign in / Sign up

Export Citation Format

Share Document