Magnesium ionophore III as an effective receptor for trivalent europium and americium |
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Authors: | E Makrlík P Vaňura P Selucký |
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Institution: | 1. Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Kamycká 129, 165 21, Prague 6, Czech Republic 2. Department of Analytical Chemistry, Institute of Chemical Technology, Prague, Technická 5, 166 28, Prague 6, Czech Republic 3. NRI, 250 68, ?e?, Czech Republic
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Abstract: | Solvent extraction of microamounts of trivalent europium and americium into nitrobenzene by using a synergistic mixture of hydrogen dicarbollylcobaltate (H+B?) and magnesium ionophore III (L) was studied. The equilibrium data were explained assuming that the species HL+, \( \text{HL}_{2}^{ + } , \) \( {\text{ML}}_{2}^{3 + } , \) and \( {\text{ML}}_{3}^{3 + } \) (M3+ = Eu3+, Am3+; L = magnesium ionophore III) are extracted into the nitrobenzene phase. The values of extraction and stability constants of the cationic complex species in nitrobenzene saturated with water were determined and discussed. |
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