Collect. Czech. Chem. Commun. 1980, 45, 41-53

Citrate complexes of uranyl in solutions with high citrate concentrations

Petr Vaňura and Libor Kuča

Institute of Nuclear Research, 250 68 Řež


The composition and stability of uranyl citrate complexes in aqueous solutions of the ionic medium of 1M-(H,Na,(UO2)0.5)A3 (where H3A represents citric acid) were studied based on the potentiometric and spectrophotometric data. The best fit to the experimental data was obtained with the set of complexes UO2A-, (UO2A)22-, HUO2A, (HUO2A)2, and H2UO2A+, the former three complexes being significant in the whole concentration region.