Cathodic Action of the Uranium Chelate Compounds at the Dropping Mercury Electrode I. Uranyl‐Succinate Complex

Complex formation between uranium (VI) and succinic acid has been studied polarographically. The discussion concerning the first wave of the chelate in p H range 20 to 6.5 was given in detail. The difference of ligands between U (VI) and U (V) was found to be two, and the electrode reactions at 2.0< p H<5.2 and 5.2< p H<6.5 were considered as,and respectively. The dissociation constants at 30°C were calculated as,A linear relation was found to exist between the diffusion current and uranyl ion concentration in a range between 2×10 −4 M to 3×10 −3 M.