共查询到20条相似文献,搜索用时 31 毫秒
1.
The extraction of microamounts of cesium by a nitrobenzene solution of sodium bis-1,2-dicarbollylcobaltate (Na+B−) in the presence of 15-crown-5 (15C5, L) has been investigated. The equilibrium data have been explained assuming the complexes
NaL+, NaL2
+, CsL+ and CsL2
+ to be extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated
with water have been determined. 相似文献
2.
P. Vaňura E. Makrlík Z. Valentová 《Journal of Radioanalytical and Nuclear Chemistry》1999,241(3):457-460
Extraction of microamounts of cesium by the nitrobenzene solution of H+ bis-1,2-dicarbollylcobaltate (H+B−) in the presence of 15-crown-5 (15C5, L) has been investigated. The equilibrium data have been explained assuming the complexes
HL+, HL2
+, CsL+ and CsL2
+ to be extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated
with water have been determined. 相似文献
3.
G. Espinosa J. I. Golzarri J. S. Bogard 《Journal of Radioanalytical and Nuclear Chemistry》2008,277(1):131-135
Extraction of microamounts of cesium by nitrobenzene solutions of sodium, ammonium and thallium dicarbollylcobaltates (M+B−; M+ = Na+, NH4+, Tl+) in the presence of benzo-15-crown-5 (B15C5, L) has been investigated. The equilibrium data have been explained assuming
that the complexes ML+ and ML2+ (M+ = Na+, NH4+, Tl+; L = B15C5) are present in the organic phase. The stability constants of the complex species ML+ and ML2+ in nitrobenzene saturated with water have been determined. 相似文献
4.
Summary Extraction of microamounts of yttrium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of 15-crown-5 (15C5,L) has been investigated. The equilibrium data have been explained assuming that the
complexes HL+, HL2,+, YL3+, YL2,3+and YH-1L2,2+are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated
with water have been determined. 相似文献
5.
Extraction of microamounts of barium by a nitrobenzene solution of cesium dicarbollylcobaltate (Cs+B-) in the presence of 15-crown-5 (15C5,L) has been investigated. The equilibrium data have been explained assuming that the complexes CsL+, CsL2
+ and BaL2
2+ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. 相似文献
6.
P. Vaňura 《Journal of Radioanalytical and Nuclear Chemistry》1999,241(3):493-497
Extraction of calcium by a nitrobenzene solution of bis-1,2-dicarbollylcobaltate in the presence of 15-crown-5 (15C5, L) has
been investigated. The equilibrium data and the typical maxima concerning the dependence of the Ca distribution ratios on
the analytical concentration of 15C5 in the system under study can be explained assuming that the HL+, HL2
+ and CaL2+, CaL2
2+ particles are extracted into the nitrobenzene phase. The values of the corresponding extraction and stability constants of
the extracted species in nitrobenzene saturated with water have been determined and the mutual Sr/Ca separation has been discussed 相似文献
7.
Extraction of barium by a nitrobenzene solution of bis-1,2-dicarbollylcobaltate in the presence of 15-crown-5 (15C5, L) has
been investigated. The equilibrium data and the typical maxima concerning the dependencies of the Ba distribution ratios on
the analytical concentration of 15C5 in the system under study can be explained assuming that the particles HL+, HL2
+ and BaL2
2+ are extracted into the nitrobenzene phase. The values of the corresponding extraction and stability constants of the extracted
species in nitrobenzene saturated with water have been determined. 相似文献
8.
Z. Valentová P. Vaňura E. Makrlík 《Journal of Radioanalytical and Nuclear Chemistry》1997,224(1-2):45-48
Extraction of85Sr by a nitrobenzene solution of bis-1,2-dicarbollylcobaltate in the presence of 15-crown-5 (15C5, L) has been investigated. The equilibrium data and the typical maxima concerning the dependencies of the Sr distribution ratios on the analytical concentration of 15C5 in the system under study can be explained assuming that the HL+, HL2
+ and SrL2
2+ species are extracted into the nitrobenzene phase. The values of the corresponding extraction and stability constants of the extracted species in nitrobenzene saturated with water have been determined. 相似文献
9.
E. Makrlík P. Vaňura P. Selucký V. Kašička 《Journal of Radioanalytical and Nuclear Chemistry》2010,283(1):95-100
Extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−) in the presence of 2,3-naphtho-15-crown-5 (N15C5, L) has been investigated. The equilibrium data have been explained assuming
that the complexes HL+, HL2
+, CaL2+, CaL2
2+ and SrL2
2+ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated
with water have been determined. It has been found that in water saturated nitrobenzene the stability constant of the SrL2
2+ cationic complex species is substantially higher than that of the complex CaL2
2+. 相似文献
10.
E. Makrlík P. Vaňura P. Selucký 《Journal of Radioanalytical and Nuclear Chemistry》2008,275(1):229-232
Extraction of microamounts of cesium by nitrobenzene solutions of potassium dicarbollylcobaltate (K+B−) and rubidium dicarbollylcobaltate (Rb+B−) in the presence of benzo-15-crown-5 (B15C5, L) has been investigated. The equilibrium data have been explained assuming
that the complexes ML+ and ML2+ (M+ = K+, Rb+, Cs+) are present in the organic phase. The stability constants of the species ML+ and ML2+ (M+ = K+, Rb+) in nitrobenzene saturated with water have been determined. 相似文献
11.
E. Makrlík 《Journal of Radioanalytical and Nuclear Chemistry》2002,253(2):327-329
Extraction of microamounts of barium by a nitrobenzene solution of ammonium dicarbollylcobaltate (NH4
+B-) in the presence of 15-crown-5(15C5,L) has been investigated. The equilibrium data have been explained assuming that the complexes NH4L+, NH4L2
+ and BaL2
2+ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. 相似文献
12.
The extraction of micro amounts of cesium by nitrobenzene solutions of sodium, potassium and rubidium dicarbollylcobaltates
(M+B−;M+=Na+,K+,Rb+) has been investigated in the presence of 2,3-naphtho-15-crown-5 (N15C5, L). The equilibrium data were explained by assuming
that ML+ and ML2+ complexes (M+=Na+,K+,Rb+, Cs+; L=N15C5) were present in the organic phase. The stability constants of the complex species ML+ and ML2+ have been determined in nitrobenzene saturated with water. It was found that the stability of the complex cation ML+ (where M+=Na+,K+,Rb+, Cs+; L=N15C5) in water-saturated nitrobenzene solutions increases along the series Cs+<Rb+<K+<Na+, whereas that of the species ML2+ in the same medium increases in the order Cs+<Rb+<Na+<K+. 相似文献
13.
Extraction distribution of microamounts of strontium in the water-CsCl-15-crown-5 (15C5,L)-nitrobenzene-cesium dicarbollylcobaltate system has been investigated. The equilibrium data have been explained assuming that the CsL+, CsL2
+ and SrL2
2+ complexes are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. 相似文献
14.
P. Vaňura E. Makrlík P. Selucký 《Journal of Radioanalytical and Nuclear Chemistry》2006,268(1):159-162
Summary Extraction of microamounts of strontium by a nitrobenzene solution of potassium dicarbollylcobaltate (K+B-) in the presence of 15-crown-5 (15C5, L) has been investigated. The equilibrium data have been explained assuming that the
complexes KL+, KL and SrL are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene
saturated with water have been determined. 相似文献
15.
Summary Extraction of microamounts of barium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of 15-crown-5 (15C5, L) has been investigated. The equilibrium data have been explained assuming that the
complexes HL+, HL and BaL are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene
saturated with water have been determined. 相似文献
16.
P. Vaňura E. Makrlík Z. Valentová 《Journal of Radioanalytical and Nuclear Chemistry》2002,253(1):157-159
The extraction of cesium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of Slovafol 909 (p-nonylphenylnonaethylene glycol, L) has been investigated. The equilibrium data have been explained assuming that the complexes HL+, HL2
+, CsL+ and CsL2
+ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. 相似文献
17.
P. Vaňura E. Makrlík M. Vobecký; 《Journal of Radioanalytical and Nuclear Chemistry》2003,257(2):437-440
Extraction of microamounts of strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of 12-crown-4 (12C4,L) has been investigated. The equilibrium data have been explained assuming that the complexes HL+, HL2
+, SrL2+ and SrL2
+2- are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. 相似文献
18.
P. Vaňura E. Makrlík M. Vobecký 《Journal of Radioanalytical and Nuclear Chemistry》2003,256(3):599-602
Extraction of microamounts of calcium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of 12-crown-4 (12C4,L) has been investigated. The equilibrium data have been explained assuming that the complexes HL+, HL2
+, CaL2+ and CaL2
2+ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. 相似文献
19.
M. Daňková P. Vaňura E. Marklík 《Journal of Radioanalytical and Nuclear Chemistry》1999,240(3):747-750
Extraction of cesium by the nitrobenzene solution of sodium bis-1,2-dicarbollylcobaltate (Na+B−) in the presence of 18-crown-6 (18C6, L) has been investigated. The equilibrium data have been explained assuming that the
complexes NaL+, CsL+ and CsL2
+ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated
with water have been determined. 相似文献
20.
E. Makrlík P. Vaňura P. Selucký 《Journal of Radioanalytical and Nuclear Chemistry》2006,267(3):707-710
Summary Extraction distribution of microamounts of cesium in the water-HCl-nitrobenzene-benzo-15-crown-5(L)-hydrogen dicarbollylcobaltate
(H+B-) system has been investigated. The equilibrium data have been explained assuming that the complexes HL+, HL, CsL+and CsL are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene
saturated with water have been determined. 相似文献