The cyclic staircase pulse voltammetry(CSPV)and check potential additive cyclic staircase pulse voltammetry(CPACSPV)for the catalytic electrods system are presented. They can improve the shape of current potential curve to enhance sensitivity of determination. The theoretical catalytic current equations have been derived

and Ti(IV) H 2C 2O 4 KClO 3 system was used to verify these theories. The effects of parameters for the limit currents were studied in detail. The experimental results consist with the theoretical conclusions. The additive cyclic current is obtained by adding the pulse currents with the same sense four times

and the shape of the wave of CPACSPV is not affected by the values of pulse amplitude.