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Extractive distribution of microamounts of europium and americium in the two phase water — HCl — nitrobenzene — N,N,N′,N′-tetraethyl-2,6-dipicolinamide — hydrogen dicarbollylcobaltate system

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Abstract

Extraction of microamounts of europium and americium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−) in the presence of N,N,N′,N′-tetraethyl-2,6-dipicolinamide (TEtDPA, L) has been investigated. The equilibrium data have been explained assuming that the cations HL+, HL 3+2 , ML 3+2 and ML 3+3 (M3+ = Eu3+, Am3+) are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. It has been found that the stability constants of the corresponding complexes EuL 3+ n,org and AmL 3+ n,org , where n = 2, 3 and L is TEtDPA, in the mentioned medium are comparable.

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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. Institute of Chemical Technology, Prague, Technická 5, 166 28, Prague, Czech Republic

    P. Vaňura

  3. Nuclear Research Institute, 250 68, Řež, Czech Republic

    P. Selucký

  4. Khlopin Radium Institute, Research and Production Association, St. Petersburg, Russia

    V. A. Babain & I. V. Smirnov

Authors
  1. E. Makrlík
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  2. P. Vaňura
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  3. P. Selucký
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  4. V. A. Babain
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  5. I. V. Smirnov
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Correspondence to E. Makrlík.

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Makrlík, E., Vaňura, P., Selucký, P. et al. Extractive distribution of microamounts of europium and americium in the two phase water — HCl — nitrobenzene — N,N,N′,N′-tetraethyl-2,6-dipicolinamide — hydrogen dicarbollylcobaltate system. J Radioanal Nucl Chem 279, 743–747 (2009). https://doi.org/10.1007/s10967-008-7375-4

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  • DOI: https://doi.org/10.1007/s10967-008-7375-4

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