THE STUDY ON THE ELECTROCHEMICAL-BEHAVIOR OF NILE-BLUE-A MODIFIED CARBON-FIBER MICROCYLINDER ELECTRODE

The functional group -COOH on carbon fiber microcylinder electrode(CFM CE) was formed by electrochemical oxidation with cyclic voltammetry, a nd the Nile blue modified CFMCE was manufactured by means of electrost atic-attraction. The electrochemical behaviour of the modified electro de was studied, and its stability was discussed. The apparent standard electron transfer rate constant and charge transfer coefficient of fi xed Nile blue A at various pH, and the number of H+ participating in e lectrode reaction were determined. The experiments indicated the modif ied electrode can catalyze the electrode reaction of hemoglobin at car bon fiber microcylinder electrode.