0162502 - UIACH-O 20033065 RIV HU eng J - Journal Article
Vaňura, P. - Makrlík, E. - Vobecký, Miloslav
Extraction of calcium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of 12-crown-4.
Journal of Radioanalytical and Nuclear Chemistry. Roč. 256, č. 3 (2003), s. 599-602. ISSN 0236-5731. E-ISSN 1588-2780
R&D Projects: GA MŠMT LN00B084
Institutional research plan: CEZ:AV0Z4031919; CEZ:MSM 230000009
Keywords : extraction * calcium
Subject RIV: CB - Analytical Chemistry, Separation
Impact factor: 0.472, year: 2003

Extraction of microamounts of calcium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of 12-crown-4 (12C4,L) has been investigated. The equilibrium data have been explained assuming that the complexes HL+, HL2+, CaL2+ and CaL2 2+ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined.
Permanent Link: http://hdl.handle.net/11104/0001201