LOGARITHMIC ANALYSIS OF 2 OVERLAPPING DC POLAROGRAPHIC WAVES .I. REVERSIBLE AND TOTALLY IRREVERSIBLE PROCESSES

Logarithmic analysis of a composite d.c. polarographic wave, which includes two overlapping waves, gives a composite curve with one inflection point and two linear parts. The ratio of diffusion currents, real half-wave potentials and the slopes of each separate wave can be calculated using the general equations evaluated and the experimental data of inflection point, and intersection points of the extrapolated linear parts with the abscissa. The analysis should be performed first by graphical estimation of the inflection point, and then by applying several iterations. Depending on the condition fulfilled, the appropriate simpler relation is used. The possibilities of application of logarithmic analysis of two overlapping d.c. polarographic waves are discussed with respect to the ratio of diffusion currents and to the difference between the half-wave potentials. © 1969.