THE EQUATIONS OF THE QUASI-STEADY-STATE V OLTAMMETRIC CURVES AT DISK AND HEMISPHERICAL MICROELECTRODES

Under quasi-steady-state conditions, the general current equations of the chronoamperometry and cyclic voltammetry at disk and hemispherical microelectrodes were derived by solving the: partical differential eq uations. A quantitative meaning of quasi-steady-state or steady-state process for chronoamperometry at disk or hemispherical microelectrode is given and examplified. Many experiments are carried out to verify t he validity of the results. The methods for the determination of heter ogeneous rate constant and charge transfer coefficient are also develo ped.