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The status of knowledge of the basic thermodynamic properties of the aqueous complexes of the actinides in their different valency states, with two environmentally important ligands, namely hydroxide and carbonate, is reviewed. Even in the case of uranium, which has been the most studied, gaps are found among the relative abundance of trustworthy formation constants, especially for the less stable valence states. The need for substantial improvement of knowledge in the case of the other actinides, especially transuranium elements, is outlined. The relative scarcity of enthalpy of formation data is also stressed.

Additional information

Authors: FUGER J, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: 3rd International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, Jerez de la Frontera (ES), Oct. 21-25, 1991
Availability: Available from (1) as Paper EN 36557 ORA
Record Number: 199210188 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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