Hydrodynamic Voltammetry

Abstract

During the 55 years since its discovery, polarography has become one of the most important techniques in analytical chemistry. The large hydrogen overpotential on mercury allows the measurement of anodic and cathodic currents of numerous organic and inorganic materials, and thereby, the determination of their concentration. In terms of a theoretical description of this process, the mass flux, and thus the voltam-metric current, formed on the surface of the slowly moving electrode surface of the dropping mercury electrode, in a static solution, can be described with good approximation using the equations of diffusion mass transport.