Collect. Czech. Chem. Commun. 1982, 47, 1763-1768

The diffusion current/drop area relationship in pulse polarography

Jorge Alfredo Bolzan

Instituto de Investigaciones Fisicoquimicas Teoricas y Aplicadas (INIFTA), Sucursal 4, 1900-La Plata, Argentina


In the case of pulse polarography theoretical considerations show that the diffusion current, either instantaneous or average, is proportional to the drop area, which in turn is a function of time to the 0.691 power. Experimental evidence collected from successive drops in the plateaus is presented. The depletion in the vicinity of the drop which prevents the use of others than the first drop in classical polarography does not seem to occur in pulse polarography to any noticeable extension because of the short electrolysis time inherent to this technique.