Electrochemistry of Uranium

Abstract

AN account of the polarographic reactions of the uranium ions has just been published¹. During 1944, experiments on this subject were made at this Laboratory, the publication of which has been delayed by war conditions. In general, our results confirm those of Kolthoff and Harris. The first wave in the uranyl polarogram is due to the reaction and the second 'wave' to a two-stage reduction from U V to U III. The American authors do not mention the fact that this second wave always shows a perceptible kink at half its height: the kink is more easily observed in sulphuric acid solutions, in which the first part of the wave has an irregular non-logarithmic form, and the second part something close to the logarithmic form of a reversible wave.