Extraction distributions of microamounts of strontium and barium in the two-phase water-HCl-nitrobenzene-dibenzo-21-crown-7-hydrogen dicarbollylcobaltate system

被引：31
|
作者：
Makrlik, E. [1 ]
Vanura, P. [2 ]
Selucky, P. [3 ]
机构：
[1] Univ W Bohemia, Fac Sci Appl, Plzen 30614, Czech Republic
[2] Prague Inst Chem Technol, CR-16628 Prague, Czech Republic
[3] Nucl Res Inst, CZ-25068 Rez, Czech Republic
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2008年 / 275卷 / 01期
关键词：
D O I：
10.1007/s10967-006-6975-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Extraction of microamounts of strontium and barium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B) in the presence of dibenzo-21-crown-7 (DB21C7, L) has been investigated. The equilibrium data have been explained assuming that the complexes HL+, ML2+, ML22+ and MHL23+ (M2+ = Sr2+, Ba2+) 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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页码：3 / 7
页数：5
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