Abstract
Extraction chromatographic supports (XAD-7) impregnated with binary mixtures of cobalt dicarbollide and one of the two phosphororganic extractants (dibutyl-N,N-diethylcarbamoylmethyl phosphonate, DBDECMP, or octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide, (CMPO) were prepared using methanolic solutions of the extractants and subsequent evaporation of methanol at room temperature. The molar ratios (x) in isomolar series of the two extractants were 0, 0.25, 0.5, 0.75, and 1. The sorbents were used for investigating Eu capture from 0.1 and 1M HNO3 solutions under static conditions (24 hours shaking, 2 cm3 aqueous phase with 0.2 g sorbent, Eu initial concentrations 3·10−9, 0.0001, 0.001, 0.01 and 0.1M). The sorbents containing mixtures of extractants corresponding to the interpolated value x=0.45 (phosphororg./dicarb.) exhibited the highest values of the distribution ratios of Eu. A synergic effect of three orders of magnitude for low concentrations of Eu was observed. A tentative determination is given of the nature and the equilibrium constants of the chemical reactions assumed.
Similar content being viewed by others
References
M. Kyrš, J. D. Navratil, L. Kuča, L. Vrbová, K. Svoboda, Nucleon (NRI, Řež). (1995) No. 2, 20.
M. Kyrš, J. D. Navratil, L. Kuča, L. Vrbová, K. Svoboda, 2nd Intem. Symp. and Exhibition on Environmental Contamination in Central and Eastern Europe, Sept. 20, 1994, Budapest, p. 1050.
M. Kyrš, J. Radioanal. Nucl. Chem., 187 (1994) 285.
M. L. Dietz, E. P. Horwitz, R. Chiarizia, H. Diamond, Novel Extraction Chromatographic Materials for the Separation and Preconcentration of Radionuclides, Paper 13, 19, in Vol. 3 of Proc. ISEC 93,D. I. T. Logsdail, M. J. Slater (Eds), Elsevier, London, 1993, p. 1587.
J. N. Mathur, M. S. Murali, P. R. Natarajan, L. P. Badheka, A. Banerji, Talanta, 39 (1992) 439.
J. Rais, S. Tachimori, J. Radioanal. Nucl. Chem., 188 (1994) 157.
B. M. Rapko, G. L. Lumetta, Solvent Extr. Ion Exch., 12 (1994) 967.
J. N. Mathur, M. S. Murali, P. R. Natarajan, J. Radioanal. Nucl. Chem., 162 (1992) 171.
J. Rais, private communication, 1996.
P. Selucky, J. Rais, The Method of the Preparation of a Sorbent Selective for Tervalent Lanthanides and Actinides, Czechoslovak Palent 222731 (18. 8. 1986).
T. Kimura, J. Akatsu, J. Radional. Nucl. Chem., 149 (1991) 13.
P. Benzi, P. Volpe, E. Mentasti, C. Sarzanini Radiochim. Acta, 48 (1989) 45.
J. Rais, S. Tachimori, P. Selucký, L. Kadlecová, Sep. Sci. Technol., 29 (1994) 261.
A. C. Muscatello, E. P. Horwitz, D. G. Kalina, L. Kaplan, Sep. Sci. Technol. 17 (1982) 859.
E. P. Horwitz, D. G. Kalina, L. Kaplan, G. W. Mason, H. Diamond, Sep. Sci. Technol., 17 (1982) 1261.
J. Kwinta, P. David, G. Metzger, Report CEA-CONF-7704, 1984.
L. G. Sillén, A. E. Martell (Comp.), Stability Constants of Metal-Ion Complexes. The Chem. Soc., London, 1971.
B. Ganser, Report KfK 3380, 1982.
S. F. Marsh, S. L. Yarbro, Report LA-11191, UC-10, DE-88, 1988.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Svoboda, K., Kyrš, M. & Vaňura, P. Synergism in the sorption of europium on chromatographic supports impregnated with dicarbollide acid and bidentate phosphororganic extractant. J Radioanal Nucl Chem 220, 47–54 (1997). https://doi.org/10.1007/BF02035346
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02035346