Extraction of barium by a nitrobenzene solution of bis-1,2-dicarbollylcobaltate in the presence of 15-crown-5 |
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| Authors: | P Vaňura E Makrlík |
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| Institution: | (1) Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28 Prague, Czech Republic;(2) Faculty of Education, Charles University, 116 39 Prague, Czech Republic;(3) Present address: 341 42 Kolinec 250, Czech Republic |
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| Abstract: | Extraction of barium by a nitrobenzene solution of bis-1,2-dicarbollylcobaltate in the presence of 15-crown-5 (15C5, L) has
been investigated. The equilibrium data and the typical maxima concerning the dependencies of the Ba distribution ratios on
the analytical concentration of 15C5 in the system under study can be explained assuming that the particles HL+, HL2
+ and BaL2
2+ are extracted into the nitrobenzene phase. The values of the corresponding extraction and stability constants of the extracted
species in nitrobenzene saturated with water have been determined. |
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