Abstract: Equations describing various differential oscillographic voltammetric curves i'_f,i″_f(single cell)and(Δi_f)',(Δi_f)"(double cells)were developed in this paper. Some valuable conclusions were obtained:(1)curves of the type(Δi_f)',(Δi_f)"=f(E) having the same shapes as those of i'_f,i"_f=f(E), are more sensitive than the latter ones;(2)the peak-peak values can be enhanced by adjusting suitable electric parameters i₀ and f, which is beneficial to the observation of oscillogram changes at the end-point in titrations.

Key words: Differential oscillographic voltammetric curves, Single cell, Double cells