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Extraction of europium and cerium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of polyethylene glycol PEG 1000

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Abstract

Solvent extraction of microamounts of europium and cerium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−) in the presence of polyethylene glycol PEG 1000 (L) has been investigated. The equilibrium data have been explained assuming that the species H2L2+ and ML3+ (M3+ = Eu3+, Ce3+) are extracted into the organic phase. The values of extraction and stability constants of the complexes in nitrobenzene saturated with water have been determined. It was found that the stability constants of the cationic complex species EuL3+ and CeL3+ in water-saturated nitrobenzene are practically the same.

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Acknowledgements

The present work was supported by the Czech Ministry of Education, Youth and Sports, Projects MSM 4977751303 and MSM 6046137307.

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Authors and Affiliations

  1. Faculty of Applied Sciences, University of West Bohemia, Husova 11, 306 14, Pilsen, Czech Republic

    E. Makrlík

  2. Department of Analytical Chemistry, Faculty of Chemical Engineering, Institute of Chemical Technology, Prague, Technická 5, 166 28, Prague, Czech Republic

    P. Vaňura

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  1. E. Makrlík
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  2. P. Vaňura
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Correspondence to E. Makrlík.

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Makrlík, E., Vaňura, P. Extraction of europium and cerium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of polyethylene glycol PEG 1000. J Radioanal Nucl Chem 283, 773–776 (2010). https://doi.org/10.1007/s10967-009-0411-1

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  • DOI: https://doi.org/10.1007/s10967-009-0411-1

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