Collect. Czech. Chem. Commun. 1987, 52, 587-591

Factors influencing the limiting current in pulse polarography

Jorge A. Bolzan

Instituto de Investigaciones Físicoquímicas Teóricas y Aplicadas, Universidad Nacional de La Plata, 1900 La Plata, Argentina


The variation of the limiting current as a function of h, the corrected height of the mercury column, and t, the time delay plus pulse width, are studied and compared with the similar relationships of DC polarography. Diffusion, adsorption, kinetic and catalytic processes are examined. Though pulse polarography is in almost every respect a much more powerful technique than DC polarography, it is shown that while the latter allows a distinction to be drawn between the different processes, by using the above mentioned relationships, the former is not suitable for the same purpose.