DOUBLE DIFFERENTIAL-PULSE VOLTAMMETRY

From the solution obtained in previous work for the faradaic response to a triple pulse of potentials. the double differential pulse technique can be defined through the equation I(ddp) = i3 - 2i2 + i1, where i(j) (j = 1, 2, 3,) is the current corresponding to the potential E(j). The solution to this equation. which is valid both for a static mercury drop electrode and for a dropping mercury electrode, was studied, and experimental conditions for the analysis of the corresponding curves are proposed. Likewise, approximate solutions and analysis criteria for completely reversible and irreversible processes are reported. The solutions were checked against experimental examples of well-known processes. The analytical and kinetic advantages of this technique are discussed.