Coulometric determination of uranium using platinum and mercury electrodes

The present paper describes the uranium controlled potential coulometric titration technique in sulfuric acid media using two different electrodes: the mercury and the platinum electrode. The platinum electrode presents several important practical advantages compared to that of mercury. Using the platinum electrode, the uranium coulometric oxidation from state IV to VI is feasible and the couples of iron (III) and uranium (IV) or plutonium (IV) and uranium (IV) determination can be realised with the same electrode and the same solution the uranium and iron or plutonium quantity which reacted is calculated using coulombs number necessary to obtain either the total oxidation or reduction of the elements of interest