Cyclic voltammetry semi-integration

A similar approach is that adopted by Bond et al. [92]. These authors used cyclic voltammetry (Sect. 3.4) as a means of obtaining two values each of the current (7 and 7) and its semi-integral (in and in) at each potential E. They demonstrated that these four values could be combined into a quantity... 

Freund, M.S., and Brajter-Toth, A. 1992. Semi-integral analysis in cyclic voltammetry Determination of surface excess and concentration in the presence of weak adsorption and thin films. Analytical Chemistry 96, 9400-9406. 

Our example in polarography illustrates how a spreadsheet can be used to simulate a rather complex curve, in this case reflecting the interplay between the Nernst equation, Fick s law of diffusion, and drop growth. The first two factors also play a role in cyclic voltammetry, where we introduce semi-integration as an example of deconvolution. 

A conventional 3 electrode system was used for cyclic voltammetry with 1 cm square planar platinum working counter electrodes a reference electrode using the same TBAP (tetrabutyl ammonium perchlorate) electrolyte (normally at 0.1 mol dm ). In dimethyl formamide (DMF) containing solutions the Ag reference electrode was inunersed in a 0.01 mol dm Ag solution in chloromethane solutions the electrolyte was saturated with lithium chloride. An EG G Potentiostat Model 362 was coupled to a computer based data cs ture treatment system. The latter included the ability to software compensate for electrolyte resistance between reference working electrodes to semi-integrate semi-differentiate Ae current responses obtained. 

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