ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

ExtractionDistribution of Microamounts of Strontium in the Two-Phase Water—NH₄Cl—15-Crown-5—Nitrobenzene—AmmoniumDicarbollylcobaltate System

P. Vaňura, E. Makrlík, and M. Vobecký

Doubravčická 2 202, CZ-100 00 Prague

Received: 31 January 2002

Abstract: Extraction of microamounts of strontium with a nitrobenzene solution of ammonium dicarbollylcobaltate in the presence of 15-crown-5 (L) has been investigated. The equilibrium data have been explained assuming that the complexes NH₄L⁺, NH₄L⁺₂ , and SrL²⁺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.

Full paper in Portable Document Format: 572a108.pdf

Chemical Papers 57 (2) 108–111 (2003)