Solvent extraction of magnesium, zinc and manganese into nitrobenzene by using strontium dicarbollylcobaltate in the presence of valinomycin |
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| Authors: | E Makrlík P Vaňura |
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| Institution: | (1) Faculty of Applied Sciences, University of West Bohemia, Husova 11, 306 14 Pilsen, Czech Republic;(2) Prague Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic |
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| Abstract: | From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the general equilibrium M2+(aq)+SrL2+(nb)⇔ML2+(nb)+Sr2+(aq) taking place in the two-phase water-nitrobenzene system (M2+ = Mg2+, Zn2+, Mn2+; L = valinomycin; aq = aqueous phase, nb = nitrobenzene phase) were evaluated. Further, the stability constants of the ML2+ complexes in water saturated nitrobenzene were calculated. They were found to increase in the order of Mg2+<Mn2+<Zn2+. |
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