On the Frequency Dependence of High-frequency Polarogram

Abstract

The fact that the high-frequency po!arogram consists of the, positivesign wave (the wave of the positive rectification effect) and the negative sign wave (the wave of the negative rectification effect) being perceived, the absolute ratio of these two wave heights has been adopted as an index of the wave-shape. The present paper demopstrates the variation of the polarographic wave-shape with respect to frequency.
In case of transfer coeMcient (a) was more than O.5, the wave-shape of high-frequency polarogram shows that the positive rectification effect incrqases as frequency increases. Whereas if transfer cQef cient isless than, 0.5, the wave-shape of high-frequency po1arogram shows that the negative rectification effect incrcases according to the increase of frequency. The absolute ratio of the height of the positive sign wave (i...) to the height of the negative sign wave, (im ig), (imaxlimin) or (imin/imax), shows the linear relationship with regard to the square root of frequency (Fig. 7, 8).
Although thedependence of the wave-ShaPe variation on the electrode process with respect to frequency is complicated, it can generally basserted that the positive rectification effect becomes more remarkable as a indreases(, a 0.5)in the system where X(=wDo)is less than 10 (Fig. 9).
Sequential separation of multi-elements systemcould be attained by the ingenious application of the frequency dependence of each e!ectrolysis system.