Hydrolysis constants of tetravalent neptunium by using solvent extraction method

Radiochimica Acta

Volumn 96, Issue 9-11, 2008, Pages 613-616

  Fujiwara, K ^a   Kohara, Y ^b  

^a JAPAN ATOMIC ENERGY AGENCY   (Japan)

^b 4 33 Muramatsu   (Japan)

Author keywords

239Np; Hydrolysis; Hydrolysis constants; Ion interaction coefficients; Neptunium(IV); Solvent extraction; Specific interaction theory (SIT)

Indexed keywords

EID: 56649111128     PISSN: 00338230     EISSN: None     Source Type: Journal    
DOI: 10.1524/ract.2008.1544     Document Type: Conference Paper

References (13)

1. Duplessis, J., Guillaumont, R.: Hydrolyse du neptunium tetravalent. Radiochem. Radioanal. Lett. 31, 293 (1977).
2. Metivier, H., Guillaumont, R.: Hydrolyse du plutonium tetravalent. Radiochem. Radioanal. Lett. 10, 27 (1972).
3. Fujiwara, K., Yamana, H., Fujii, T., Moriyama, H.: Solubility product of uranium(IV) hydrous oxide. J. Nucl. Sci. Technol. Suppl. 3, 290 (2002).
4. 2O. Radiochim. Acta 91, 345 (2003).
5. Yamamura, T., Kitamura, A., Fukui, A., Nishikawa, S., Yamamoto, T., Moriyama, H.: Solubility of U(VI) in highly basic solutions. Radiochim. Acta 83, 139 (1998).
6. Gran, G.: Determination of the equivalence point in potentiometric titrations. Part II. Analyst 77, 661 (1952).
7. Grenthe, I., Fuger, J., Konings, R. J. M., Lemire, R. J., Muller, A. B., Nguyen-Trung, C., Wanner, H.: Chemical Thermodynamics of Uranium. North-Holland, Amsterdam (1992).
8. Guillaumont, R., Fanghänel, Th., Fuger, J., Grenthe, I., Neck, V., Palmer, D. A., Rand, M. H.: Update on the Chemical Thermodynamics of Uranium, Neptunium, Plutonium, Americium and Technetium. North-Holland, Amsterdam (2003).
9. Neck, V., Kim, J. I.: Solubility and hydrolysis of tetravalent actinides. Radiochim. Acta 89, 1 (2001).
10. Nikolaev, N. S., Luk'yanychev, Yu. A.: The hydrolysis of uranium tetrafluoride. Sov. At. Energy 11, 704 (1961).
11. Davydov, Yu. P., V. M. Efremenkov.: Investigation of the hydrolytic properties of tetravalent uranium: II. Conditions of formation of mononuclear and polynuclear hydroxo complexes of U(IV). Sov. Radiochem. 17, 160 (1975).
12. Yun, J. I., Cho, H. R., Neck, V., Altmaier, M., Seibert, A., Marquardt, C. M., Walther C., Fanghänel, Th.: Investigation of the hydrolysis of plutonium(IV) by a combination of spectroscopy and redox potential measurements. Radiochim. Acta 95, 89 (2007).
13. Moriyama, H., Kitamura, A., Fujiwara, K., Yamana, H.: Analysis of hydrolysis constants of actinide ions by hard sphere model. Radiochim. Acta 87, 97 (1999).