Transient Studies of Glucose, Oxygen, and Hydroquinone at a Membrane‐Covered Rotated Disk Electrode

Abstract

The membrane‐covered rotated disk electrode was used to evaluate transport and reaction of three representative solutes after a step change in electrode potential. An analysis is proposed that allows complete characterization of solute transport properties in the membrane from a single measurement for diffusion‐limited processes. For partially reaction‐limited processes, certain kinetic constants can be estimated provided that transport properties are known from independent experiments. Using a well‐characterized membrane, reactions of oxygen and hydroquinone were studied as examples of diffusion‐limited processes. Glucose oxidation, a process in which there is a complex dependency on reaction kinetics, was also studied and certain rate constants estimated. These results provide a foundation for characterization of transport in novel membranes.