Local redox potential measurement

A local potential measurement method that can be easily used in an anaerobi c solution was settled and the potential probe was tested with a simple and fast electrochemical system. From the local potential value, plotted versu s the distance to the working electrode, the concentration profile of the e lectrochemically consumed species can be calculated. The comparison of this experimental concentration profile to the theoretical one, which is based on Nernst hypothesis, enables us to assess the screening effect induced by the potential probe on the potential and current distributions. Thus, it is possible to calculate the potential profile that would be recorded by an i deal probe. (C) 1999 Elsevier Science S.A. All rights reserved.