Hostname: page-component-77c89778f8-m42fx Total loading time: 0 Render date: 2024-07-17T20:47:21.186Z Has data issue: false hasContentIssue false
  • English
  • Français

Determination of Formation Constants, Solubilities, and Ionic Speciation of Uranium, Plutonium and Thorium in Aqueous and Saturated Salt Solutions for Modelling Safety Aspects of Ilw Repositories

Published online by Cambridge University Press:  25 February 2011

H. Bischoff ,
U. Kramer-Schnabel ,
V. Esser ,
R.H. Xi ,
P.-M. Heppner  and
G. Marx
H. Bischoff
Affiliation:
FG Radiochemie, Freie Universität Berlin, Institut für Anorganische und Analytische Chemie, Fabeckstr. 34-36, 1000 Berlin 33, Germany
U. Kramer-Schnabel
Affiliation:
FG Radiochemie, Freie Universität Berlin, Institut für Anorganische und Analytische Chemie, Fabeckstr. 34-36, 1000 Berlin 33, Germany
V. Esser
Affiliation:
FG Radiochemie, Freie Universität Berlin, Institut für Anorganische und Analytische Chemie, Fabeckstr. 34-36, 1000 Berlin 33, Germany
R.H. Xi
Affiliation:
FG Radiochemie, Freie Universität Berlin, Institut für Anorganische und Analytische Chemie, Fabeckstr. 34-36, 1000 Berlin 33, Germany
P.-M. Heppner
Affiliation:
FG Radiochemie, Freie Universität Berlin, Institut für Anorganische und Analytische Chemie, Fabeckstr. 34-36, 1000 Berlin 33, Germany
G. Marx
Affiliation:
FG Radiochemie, Freie Universität Berlin, Institut für Anorganische und Analytische Chemie, Fabeckstr. 34-36, 1000 Berlin 33, Germany
Get access

Abstract

The solubility products of uranyl hydroxide and uranyl carbonate and the formation constants of the complexes present in the solution have been determined at 25ºC and I=0.1 mol dm−3 by potentiometry and solubility experiments. The uranyl complexes U02(OH)2' (UO2)2(OH)22+,(UO2)3(OH)5+, UO2CO3', UO2(CO3)22− and UO2(CO3)34− were identified. For the system uranyl-hydroxide the results were verified by analysis of conductance measurements. A similar investigation was carriedout for thorium. Using Pu(IV)-chloride complexes as an example the potential of differential pulse voltarnmetry is demonstrated for the determination of small formation constants.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 257: Symposium – Scientific Basis for Nuclear Waste Management XV , 1991 , 331
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Savvin, S.B., Talanta 8, 673 (1961)Google Scholar
2. Lee, W.H., Wheaton, R.J., J. Chem. Soc. Faraday II, 74,743 (1978) W.H. Lee, R.J. Wheaton, J. Chem. Soc. Faraday II, 74, 1456 (1978)CrossRefGoogle Scholar
3. Quint, J., Viallard, A., J. Solution Chem., 7, 533 (1978)Google Scholar
4. Davies, C.W., Ion Association (Butterworths, Washington, 1962)Google Scholar
5. Esser, V., Ph.D. thesis, Freie Universitat Berlin (1990)Google Scholar
6. Gmelin Handbook of Inorg. Chemistry, Uranium, Supplementary volume D1, (Springer 1984)Google Scholar
7. Tsymbal, C., Commis. Energ. At.(Fr), Rapp. CEA-R- 3476, 99 (1969)Google Scholar
8. Gustafson, R.L., Richard, C., Martell, A.E., J. Am. Chem. Soc., 82, 1526 (1960)Google Scholar
9. Sylva, R.N., Davidson, M.R., J. Chem. Soc. Dalton Trans., 465 (1979)Google Scholar
10. Baes, C.F., Meyer, N.J., Inorg. Chem. 1, 780 (1962)CrossRefGoogle Scholar
11. Gmelin Handbook of Inorganic Chemistry, Uranium, Vol. C2 (Springer 1978)Google Scholar
12. Bartusek, M., Sommer, L., Z. Phys. Chem. (Leipzig) 226,309 (1964)Google Scholar
13. Lajunen, L.H.J., Parki, S., Finn. Chem. Lett. 43 (1979)Google Scholar
14. Grenthe, I., Ferri, D., Salvatore, F., Riccio, G., J. Chem. Soc. Dalton Trans. 11, 2439 (1984)Google Scholar
15. Maya, L., Inorg. Chem. 21, 2895 (1982)Google Scholar
16. Scanlan, J.P., J. Inorg. Nucl. Chem. 39, 635 (1977)CrossRefGoogle Scholar
17. Cinneide, S.O., Scanlan, J.P., Hynes, M.J., J. Inorg. Nucl. Chem. 37, 1013 (1975)CrossRefGoogle Scholar
18. Suranji, T.M., Milic, N.B., Croat. Chem. Acta 55, 295 (1982)Google Scholar
19. Rabideau, S.W., Cowan, H.O., J. Am. Chem. Soc. 73, 6145 (1955)CrossRefGoogle Scholar
20. Grenthe, I., Noren, B., Acta Chem. Scand. 14, 2216 (1960)CrossRefGoogle Scholar