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- Title
Synergistic extraction of some univalent cations into nitrobenzene by using sodium dicarbollylcobaltate and nonactin.
- Authors
Makrlík, E.; Vaňura, P.
- Abstract
From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the general equilibrium $$ {\text{M}}^{ + } \left( {\text{aq}} \right) \, + {\mathbf{1}}\cdot{\text{Na}}^{ + } \left( {\text{nb}} \right) \Leftrightarrow {\mathbf{1}}\cdot{\text{M}}^{ + } \left( {\text{nb}} \right) \, + {\text{Na}}^{ + } \left( {\text{aq}} \right) $$ taking place in the two-phase water-nitrobenzene system $$ \begin{gathered} ({\text{M}}^{ + } = {\text{ Li}}^{ + } ,{\text{ K}}^{ + } ,{\text{ Rb}}^{ + } ,{\text{ Cs}}^{ + } ,{\text{ H}}_{ 3} {\text{O}}^{ + } ,{\text{NH}}_{4}^{ + }, {\text{ Ag}}^{ + } ,{\text{ Tl}}^{ + } ;{\mathbf{1}} \hfill \\ = {\text{ nonactin}};{\text{ aq }} = {\text{ aqueous phase}},{\text{ nb }} = {\text{nitrobenzene phase}}) \hfill \\ \end{gathered} $$ were determined. Moreover, the stability constants of the 1·M complexes in water-saturated nitrobenzene were calculated; they were found to increase in the series of $$ {\text{Cs}}^{ + } < {\text{ Rb}}^{ + } < {\text{ H}}_{ 3} {\text{O}}^{ + } ,{\text{ Ag}}^{ + } < {\text{ Tl}}^{ + } < {\text{ Li}}^{ + } < {\text{ K}}^{ + } < {\text{NH}}_{4}^{ + } $$.
- Subjects
NITROBENZENE; EXTRACTION (Chemistry); MONOVALENT cations; SODIUM compounds; NONACTIN; ION exchange (Chemistry); PHASE equilibrium; ANALYTICAL chemistry
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2013, Vol 295, Issue 2, p1341
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-012-2232-x