WARWICK, P. ... et al, 2007. Stability constants of U(VI) and U(IV)-humic acid complexes. Journal of radioanalytical and nuclear chemistry, 266 (2), 2005, pp. 179-190
Conditional stability constants have been determined for U(IV) and U(VI)
Boom Clay humic acid (BCHA) and Aldrich humic acid (AHA) complexes,
under anaerobic and carbonate free conditions. The constants are needed for
nuclear waste repository performance assessment purposes. The U(IV)
constants were obtained by developing an approach based on the solubility
product of amorphous U(OH)4. The U(VI) constants were obtained by
applying the Schubert ion exchange approach.