In differential pulse voltammetry (DPV)69–73, short pulses (t = 10–100ms)with limited amplitude (DE = 1–100mV) are superponated to a linearlyincreasing DC ramp (Fig.2.12). This means that besides the current of thepulse, a DC current also is obtained due to the inclining DC ramp. Practically, the current is measured before the application of a pulse (I1) and atthe end of the pulse (I2). The first current is attributed to the DC ramp,while the difference I2 - I1 reflects the current of the potential pulse. Theresulting voltammograms of the pulse current have a differential shape,which is illustrated in Fig.2.13. In Fig.2.13a, the common voltammogram isillustrated that would be obtained in linear sweep, cyclic or normal pulsevoltammetry, while in Fig.2.13b, the differential pulse voltammogram isshown. As explained above, the signal in differential pulse voltammetry isthe result of the difference between two signals – the signal just before thepulse and the signal at the end of the pulse. Therefore, it can be seen in Fig.2.13a that the pulses cover a small fraction of the common voltammogram,