Solvent extraction of strontium and barium into nitrobenzene by using synergistic mixture of hydrogen dicarbollylcobaltate and dibenzo-24-crown-8

被引:0
作者
E. Makrlík
P. Vaňura
P. Selucký
机构
[1] University of West Bohemia,Faculty of Applied Sciences
[2] Institute of Chemical Technology,Department of Analytical Chemistry, Faculty of Chemical Engineering
[3] Nuclear Research Institute,undefined
来源
Journal of Radioanalytical and Nuclear Chemistry | 2010年 / 284卷
关键词
Extraction; Strontium; Barium; Dibenzo-24-crown-8; Hydrogen dicarbollylcobaltate; Nitrobenzene; Complexes; Stability constants;
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摘要
Extraction of microamounts of strontium and barium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−) in the presence of dibenzo-24-crown-8 (DB24C8, L) has been investigated. The equilibrium data have been explained assuming that the species HL+, HL2+, ML2+, ML22+ and MHL23+ (M2+ = Sr2+, Ba2+) are extracted into the organic phase. The values of extraction and stability constants of the complexes in nitrobenzene saturated with water have been determined. It was found that the stability constants of the cationic complex species BaL2+ and BaL22+ in the considered nitrobenzene medium are somewhat higher than those of the corresponding complexes SrL2+ and SrL22+.
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页码:137 / 142
页数:5
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共 114 条
[1]  
Pedersen CJ(1967)undefined J Am Chem Soc 89 2495-undefined
[2]  
Pedersen CJ(1967)undefined J Am Chem Soc 89 7017-undefined
[3]  
Kolthoff IM(1979)undefined Anal Chem 51 1R-undefined
[4]  
Christensen JJ(1974)undefined Chem Rev 74 351-undefined
[5]  
Eatough DJ(1997)undefined Acc Chem Res 30 338-undefined
[6]  
Izatt RM(1991)undefined Chem Rev 91 1721-undefined
[7]  
Bradshaw JS(1985)undefined Talanta 32 423-undefined
[8]  
Izatt RM(2008)undefined Acta Chim Slov 55 430-undefined
[9]  
Izatt RM(2008)undefined Acta Chim Slov 55 223-undefined
[10]  
Pawlak K(2009)undefined Acta Chim Slov 56 278-undefined