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Solvent extraction of lead using a nitrobenzene solution of strontium dicarbollylcobaltate in the presence of polyethylene glycol PEG 400

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From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium Pb2+(aq)+SrL2+ (nb)↔PbL2+ (nb)+Sr2+ (aq) taking place in the two-phase water-nitrobenzene system (L=PEG 400; aq = aqueous phase, nb = nitrobenzene phase) was evaluated as logK ex(Pb2+, SrL2+)=2.0±0.1. Further, the stability constant of the PEG 400 - lead complex in nitrobenzene saturated with water was calculated for a temperature of 25 °C: log β nb(PbL2+)=12.9±0.1.

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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. Prague Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic

    P. Vaňura

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  1. E. Makrlík
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  2. P. Vaňura
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Makrlík, E., Vaňura, P. Solvent extraction of lead using a nitrobenzene solution of strontium dicarbollylcobaltate in the presence of polyethylene glycol PEG 400. J Radioanal Nucl Chem 267, 233–235 (2005). https://doi.org/10.1007/s10967-006-0032-x

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  • DOI: https://doi.org/10.1007/s10967-006-0032-x

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