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Extraction of barium using nitrobenzene solution of sodium dicarbollylcobaltate in the presence of 15-crown-5

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Abstract

From extraction experiments with22Na as a tracer, the extraction constant corresponding to the equilibrium Ba2+(aq)+2NaL+(nb)⇄ ⇄BaL2 2+(nb)+2Na+(aq) taking place in the two-phase water-nitrobenzene system (L=15-crown-5; aq=aqueous phase, nb=nitrobenzene phase) was evaluated as logK ex (Ba2+,2NaL+)=3.3±0.1. Further, the stability constant of the complex BaL2 2+ in nitrobenzene saturated with water was calculated: log βnh(BaL 2+2 )=16.4±0.1.

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Author notes

  1. E. Makrlík

    Present address: , 341 42, Kolinec 250, Czech Republic

Authors and Affiliations

  1. Faculty of Education, Charles University, 116 39, Prague, Czech Republic

    E. Makrlík

  2. Prague Institute of Chemical Technology, 166 28, Prague, Czech Republic

    P. Vaňura

  3. Kremličkova 964, 280 00, Kolín II, Czech Republic

    M. Daňková

Authors
  1. E. Makrlík
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  2. P. Vaňura
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  3. M. Daňková
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Makrlík, E., Vaňura, P. & Daňková, M. Extraction of barium using nitrobenzene solution of sodium dicarbollylcobaltate in the presence of 15-crown-5. J Radioanal Nucl Chem 242, 207–209 (1999). https://doi.org/10.1007/BF02345921

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  • DOI: https://doi.org/10.1007/BF02345921

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