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|Title:||Solubility of Zr(IV), Th(IV) and Pu(IV) Hydrous Oxides in CaCl2 Solutions and the Formation of Ternary Ca-M(IV)-OH Complexes|
|Authors:||ALTMAIER M.; NECK V.; FANGHAENEL Thomas|
|Citation:||RADIOCHIMICA ACTA vol. 96 no. 9-11 p. 541-550|
|JRC Publication N°:||JRC49445|
|Type:||Contributions to Conferences|
|Abstract:||The solubility of Zr(IV), Th(IV) and Pu(IV) hydrous oxides is investigated at 22±2 ¿C in alkaline 0.1¿4.5M CaCl2 solutions. Further studies are performed with Zr(IV) over the entire pH range in NaCl and CaCl2 media, and with Zr(IV) and Th(IV) in alkaline Ca(ClO4)2 solutions. The comparison of Zr(IV) data in different ionic media (NaCl, NaClO4, CaCl2 and Ca(ClO4)2) of similar ionic strength shows that the solubility in the acidic and neutral pH range is not affected by strong interactions between the aqueous M(IV) species and the medium ions.|
|JRC Institute:||Institute for Transuranium Elements|
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