Application of rotating disk electrodes to the study of electrode-initiated reactions of p-phenylenediamines - Tong, L.K.J.; Liang, K.; Ruby, W.R. (Elsevier)
A theory has been formulated to relate the oxidation current and potential of a rotating disk electrode for the oxidation of p-phenylenediamines in the presence of other substances that react irreversibly with the oxidation products. Such reactants include the OH^- ion and coupler ions. The rates of these reactions influence the current-potential relationship in such a manner that variations in the latter can be used to measure the rates in which we are interested. Corrections for error in potentials, due to instability of oxidized developing agents, were deduced. After these corrections were applied to the measured half-wave potentials, the equilibrium standard potentials of these developing agents were obtained. Using compounds studied previously by flow-machine methods, we have found the electrode method to be reliable, by comparison.
http://linkinghub.elsevier.com/retrieve/pii/0022-0728(67)80122-0
Keywords: V