On the complexation of some univalent cations with beauvericin in nitrobenzene saturated with water

被引:5
|
作者
Makrlik, Emanuel [1 ]
Selucky, Pavel [2 ]
Vanura, Petr [3 ]
Toman, Petr [4 ]
机构
[1] Czech Univ Life Sci, Fac Environm Sci, Prague 16521 6, Czech Republic
[2] Nucl Res Inst, CZ-25068 Rez, Czech Republic
[3] Inst Chem Technol, Dept Analyt Chem, CR-16628 Prague 6, Czech Republic
[4] Acad Sci Czech Republ, Inst Macromol Chem, CR-16206 Prague 6, Czech Republic
关键词
Univalent cations; Beauvericin; Complexation; Extraction and stability constants; Water-nitrobenzene system; INDIVIDUAL EXTRACTION CONSTANTS; HYDROGEN DICARBOLLYLCOBALTATE; SOLVENT-EXTRACTION; CYCLIC POLYETHERS; UNEX PROCESS; STRONTIUM; VALINOMYCIN; MICROAMOUNTS; STABILITY; CESIUM;
D O I
10.1007/s10847-011-0060-1
中图分类号
O6 [化学];
学科分类号
0703 ;
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 dagger 1 center dot M+(nb) + Cs+(aq) taking place in the two-phase water-nitrobenzene system (M+ = Li+, Na+, K+, Rb+, H3O+, NH4 (+), Tl+; 1 = beauvericin; aq = aqueous phase, nb = nitrobenzene phase) were determined. Moreover, 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 Rb+ < Na+, H3O+ < Tl+ < NH (4) (+) < K+ < Li+.
引用
收藏
页码:329 / 333
页数:5
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