Solvent extraction of strontium into nitrobenzene using hydrogen dicarbollylcobaltate in the presence of 12-crown-4期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Solvent extraction of strontium into nitrobenzene using hydrogen dicarbollylcobaltate in the presence of 12-crown-4

Authors:	P. Vaňura,E. Makrlík,M. Vobecký

Affiliation:	(1) Doubravická 2 202, 100 00 Prague 10, Czech Republic;(2) Institute of Interdisciplinary Studies, University of West Bohemia, Husova 11, 306 14 Pilsen, Czech Republic;(3) Institute of Analytical Chemistry, Academy of Sciences of the Czech Republic, 142 20 Prague 4

Abstract:	Extraction of microamounts of strontium 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⁺, SrL²⁺ 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.

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