Part 13: Double Differential Pulse Amperometry (DDPA)

Double differential pulse amperometry is performed by combining two sets of differential pulse amperometry. Two sets of data are recorded and displayed. Each set consists of a cleaning potential without current sampling and two pulse potentials with current sampling.
The current at the end of each pulse is recorded as a function of time. During the experiment, only the difference between the two current samplings is displayed. At the end of the experiment, the current in response to the two potential pulses is available for display. The potential waveform is applied as a function of the time and current sampling scheme (see Fig. 13-1).

Fig. 13-1 Potential waveform is a function of time and current sampling scheme.

Types of data that can be plotted