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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)

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