Extraction of microamounts of strontium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of dicyclohexyl-18-crown-6 |
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| Authors: | Z. Valentová P. Vaňura E. Makrlík |
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| Affiliation: | (1) V. Nezvala 758, 272 04 Kladno, Czech Republic;(2) Prague Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic;(3) Faculty of Applied Sciences, University of West Bohemia, Husova 11, 306 14 Pilsen, Czech Republic |
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| Abstract: | Summary Extraction of microamounts of strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of dicyclohexyl-18-crown-6 (DCH18C6, L) has been investigated. The equilibrium data have been explained assuming that the complexes HL+, HL, SrL2+and SrL are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. |
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