Synergistic extraction of some univalent cations into nitrobenzene by using cesium dicarbollylcobaltate and dibenzo-30-crown-10

被引：5
|
作者：
Makrlik, E. [1 ]
Vanura, P. [2 ]
机构：
[1] Czech Univ Life Sci, Fac Environm Sci, Prague 16521 6, Czech Republic
[2] Inst Chem Technol, Dept Analyt Chem, CR-16628 Prague 6, Czech Republic
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2013年 / 295卷 / 02期
关键词：
Univalent cations; Dibenzo-30-crown-10; Complexation; Water-nitrobenzene system; Extraction and stability constants; ALKALI-METAL CATIONS; HYDROGEN DICARBOLLYLCOBALTATE; SOLVENT-EXTRACTION; CYCLIC POLYETHERS; UNEX PROCESS; WATER; COMPLEXES; STRONTIUM; STABILITY; THERMODYNAMICS;
D O I：
10.1007/s10967-012-1857-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
From extraction experiments and gamma-activity measurements, the exchange extraction constants corresponding to the general equilibrium M+(aq) + 1 center dot Cs+(nb) a double dagger" 1 center dot M+(nb) + Cs+(aq) taking place in the two-phase water-nitrobenzene system (M+ = Li+, Na+, H+, NH4 (+), Ag+, K+, Rb+, Tl+; 1 = dibenzo-30-crown-10; aq = aqueous phase, nb = nitrobenzene phase) were determined. Furthermore, the stability constants of the 1 center dot M+ complexes in water-saturated nitrobenzene were calculated; they were found to increase in the series of Cs+ < H+, Ag+ < NH4 (+) < Na+ < Rb+ < Li+ < K+, Tl+.
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页码：911 / 914
页数：4
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