Alternating Current Polarography: Tensammetric Investigation of Adsorption Processes. Utility of Phase-Angle Measurements

Abstract

Tensammetric measurements, based on interpretation of the non-faradaic alternating current flow under conditions of alternating current polarography, have been used to study the adsorption of various substances on mercury electrodes. Such measurements can be greatly improved by use of an apparatus arrangement which permits measurement of both the alternating current and the phase angle ; from the latter, the series resistance and the capacity of the electrical double layer can be calculated. The application to inorganic systems involving retrograde currents and film formation is described.