Electrodes of Conductive Metallic Oxides : Part B. S. Trasatti (Editor). Studies in Physical and Theoretical Chemistry,Vol. 11. Elsevier,Amsterdam, 1981, xvi + 366 pp. $72.25, Dfl.170.00.

Chronoamperometry, chronocoulometry and chronopotentiometry were applied to measure apparent diffusion coefficients, D_app, for Mo(CN)₈^4?, W(CN)₈^4?, Fe(CN)₆^3? and Fe(CN)₆^4? bound electrostatically within coatings of protonated poly(4-vinylpyridine) on graphite electrodes. The relative advantages of the three experimental techniques are discussed. Values of D_app for the incorporated anions showed a strong decrease as the anion concentration within the coating increased until a steady value was reached at anion concentrations near 1 M. Some of the factors that may contribute to this behavior are discussed.