Calcium ionophore I as very effective extraction agent for trivalent europium and americium

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Published: Mar 8, 2019
Keywords:
liquid–liquid extraction europium and americium calcium iono¬phore I extraction and stability constants water–nitrobenzene system

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Emanuel Makrlík
Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Kamýcká 129, 165 21 Prague 6-Suchdol
Petr Vaňura
University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6

Abstract

The solvent extraction of microamounts of Eu3+ and Am3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H+B-) and calcium ionophore I (marked as the ligand L) was investigated. The equi­librium data have been explained assuming that the species HL+, HL2+,ML23+ and ML33+ (M3+: Eu3+ or Am3+) are extracted into the organic phase. The extraction and stability constants of the cationic complex species in nitrobenzene saturated with water have been determined and discussed. It was proven experimentally that the ligand L could be considered as a very strong receptor for Eu3+ and Am3+.

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How to Cite
[1]
E. Makrlík and P. Vaňura, “Calcium ionophore I as very effective extraction agent for trivalent europium and americium”, J. Serb. Chem. Soc., vol. 84, no. 2, pp. 199–209, Mar. 2019.
Issue
Vol. 84 No. 2 (2019)
Section
Analytical Chemistry

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Author Biography

Emanuel Makrlík, Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Kamýcká 129, 165 21 Prague 6-Suchdol

Department of Applied Ecology

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