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 techniq ue 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 mercu ry drop electrode and for a dropping mercury electrode, was studied, a nd experimental conditions for the analysis of the corresponding curve s 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 pr ocesses. The analytical and kinetic advantages of this technique are d iscussed.