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+.

引用

页码：911 / 914

页数：4

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