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Solvent extraction of microamounts of strontium and barium into nitrobenzene using hydrogen dicarbollylcobaltate in the presence of polyethylene glycol PEG 600

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Abstract

Extraction of microamounts of strontium and barium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−) in the presence of polyethylene glycol PEG 600 (L) has been investigated. The equilibrium data have been explained assuming that the complexes HL+, H2L2+, ML2+ and MHL3+ (M2+ = Sr2+, Ba2+) 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 was found that in water-saturated nitrobenzene the stability constant of the BaL2+ cationic complex species is essentially higher than that of the complex SrL2+.

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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. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovského sq. 2, 162 06, Prague, Czech Republic

    Z. Sedláková

Authors
  1. E. Makrlík
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  2. P. Vaňura
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  3. Z. Sedláková
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Correspondence to E. Makrlík.

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Makrlík, E., Vaňura, P. & Sedláková, Z. Solvent extraction of microamounts of strontium and barium into nitrobenzene using hydrogen dicarbollylcobaltate in the presence of polyethylene glycol PEG 600. J Radioanal Nucl Chem 280, 607–611 (2009). https://doi.org/10.1007/s10967-009-7484-8

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  • DOI: https://doi.org/10.1007/s10967-009-7484-8

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