Abstract
The electrochemical reduction and oxidation behaviour of Cefuroxime Axetil was investigated by square wave voltammetry in different supporting electrolytes. Cefuroxime Axetil has both reducible and oxidacible groups in its structure. The optimum conditions were obtained in 0.1M phosphate borate buffer pH7.0 for electroreduction at hanging mercury drop electrode. A well-defined peak was observed at −1.06V vs. Ag/AgCl/4.6M KCl. The optimum conditions were obtained in Britton-Robinson buffer pH2.0 for electrooxidation at modified glassy carbon electrode. A well-defined peak was observed at 1.30V vs. Ag/AgCl/4.6M KCl. Current type, reversibility of electrode reactions and the number of electrons transferred was investigated by using cyclic voltammetry, chronoamperometry and chronocoulometry. Besides calculation of diffusion coefficients and the rate constants of electron transfer, the reduction and oxidation mechanisms were also proposed.
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