6-4
Figure 6-3. Derivative dialog box.
Differentiation of I is often used for accurate calculation of peak potentials (1st
derivative) and half-wave potentials (2nd derivative).
6.4
Convolution
In addition to differentiation and integration, semi-differentiation and semi-
integration are also commonly used for processing electrochemical data. Both of
these processes are available on the BAS 100W as Convolution Mode options
(Figure 6-4). Additional smoothing is available for semi-differentiation, since this
process can increase the noise level. The convoluted data can transferred to main
memory using Replace Current Data. Semi-differentiation is particularly useful for
cyclic voltammetry, since it can produce a considerable improvement in the
resolution of closely spaced peaks. Semi-integration can be used to remove the
effects of iR drop.
Figure 6-4. Convolution dialog box.
