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Separation of yttrium from strontium in the aqueous phase of the water/nitrobenzene system
Journal of Radioanalytical and Nuclear Chemistry, 2002A rapid separation of carrier-free 90Y in the aqueous phase of the water/nitrobenzene extraction system from an 90Y/90Sr generator is proposed. After a three-stage extraction, the chemical yield of 90Y in the final aqueous phase was almost 90%, while the 90Sr radionuclide impurity in this phase containing carrier-free 90Y was about 10–10%.
P. Vaňura, E. Makrlík, M. Vobecký
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Journal of Molecular Liquids, 2021
Abstract The stability constants of the cationic complexes ML+, where M+= Li+, Na+, H3O+, Ag+, K+, NH4+, Tl+, Rb+, Cs+; and L = calix[4]crown ethers in nitrobenzene saturated with water were determined on the basis of the experimental distribution ratios of these cations.
Petr Vaňura +2 more
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Abstract The stability constants of the cationic complexes ML+, where M+= Li+, Na+, H3O+, Ag+, K+, NH4+, Tl+, Rb+, Cs+; and L = calix[4]crown ethers in nitrobenzene saturated with water were determined on the basis of the experimental distribution ratios of these cations.
Petr Vaňura +2 more
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Separation of microamounts of yttrium from strontium in the two‐phase water/nitrobenzene system
Journal of Radioanalytical and Nuclear Chemistry, 2002A rapid and very effective separation of carrier‐free 90 Y in the aqueous phase of the water/nitrobenzene system from an 90 Y/90 Sr generator is proposed. After a two‐stage extraction separation, the radionuclide impurity of 90 Sr in the final aqueous phase containing carrier‐free 90 Y is approximately 10 ‐16%, while the chemical yield of 90 Y in this ...
E. Makrlík, P. Vaňura, M. Vobecký
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Journal of Radioanalytical and Nuclear Chemistry, 2003
A rapid separation for carrier-free 90Y in the aqueous phase of the water/nitrobenzene extraction system from an 90Y/90Sr generator was proposed. After two-stage extraction separation, chemical yield of 90Y in the final aqueous phase was roughly 80%, while 90Sr radionuclide impurity in this phase containing carrier-free 90Y was 10-6%.
P. Vaňura, E. Makrlík, V. Vobecký;
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A rapid separation for carrier-free 90Y in the aqueous phase of the water/nitrobenzene extraction system from an 90Y/90Sr generator was proposed. After two-stage extraction separation, chemical yield of 90Y in the final aqueous phase was roughly 80%, while 90Sr radionuclide impurity in this phase containing carrier-free 90Y was 10-6%.
P. Vaňura, E. Makrlík, V. Vobecký;
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Extraction separation of barium from strontium in a two-phase water-nitrobenzene system
Journal of Radioanalytical and Nuclear Chemistry Letters, 1985A rapid extraction separation of Ba2+ from Sr2+ with a nitrobenzene solution of sodium dicarbollylcobaltate /NaDCC/ in the presence of polyethylene glycol having mean relative molecular weight 400 /PEG 400/ and tetrasodium salt of trans-cyclohexane-1,2-diamine-N,N,N′,N′-tetraacetic acid /Na4L/ was developed.
E. Makrlík, P. Vaňura
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Journal of Radioanalytical and Nuclear Chemistry, 2005
A rapid separation of Sr2+from Ca2+using HCl, 15-crown-5 (15C5) and hydrogen dicarbollylcobaltate (H+B-) in the two-phase water-nitrobenzene extraction system was developed.
P. Vaňura, E. Makrlík
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A rapid separation of Sr2+from Ca2+using HCl, 15-crown-5 (15C5) and hydrogen dicarbollylcobaltate (H+B-) in the two-phase water-nitrobenzene extraction system was developed.
P. Vaňura, E. Makrlík
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The Journal of Physical Chemistry B, 2002
Nonlinear behavior of ionic surfactant (SDS) molecules at a water/nitrobenzene (W/NB) interface in a chemical oscillation system was investigated by monitoring interfacial tension (Δγ) using time-resolved quasi-elastic laser scattering (QELS). Simultaneous measurement of electrical potential (ΔV) allowed extraction and discussion of the time course of ...
Tetsuya Takahashi +2 more
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Nonlinear behavior of ionic surfactant (SDS) molecules at a water/nitrobenzene (W/NB) interface in a chemical oscillation system was investigated by monitoring interfacial tension (Δγ) using time-resolved quasi-elastic laser scattering (QELS). Simultaneous measurement of electrical potential (ΔV) allowed extraction and discussion of the time course of ...
Tetsuya Takahashi +2 more
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Journal of Radioanalytical and Nuclear Chemistry, 2010
From extraction experiments and c-activity measurements, the exchange extraction constants corresponding to the general equilibrium M(aq) ? Sr(nb) ¢ M(nb) ? Sr(aq) taking part in the two-phase water– nitrobenzene system (M = Mg, Ca, Ba, Cu, Zn, Cd, Pb, UO2þ 2 , Mn , Fe, Co, Ni; aq = aqueous phase, nb = nitrobenzene phase) were evaluated.
E. Makrlík, P. Vaňura
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From extraction experiments and c-activity measurements, the exchange extraction constants corresponding to the general equilibrium M(aq) ? Sr(nb) ¢ M(nb) ? Sr(aq) taking part in the two-phase water– nitrobenzene system (M = Mg, Ca, Ba, Cu, Zn, Cd, Pb, UO2þ 2 , Mn , Fe, Co, Ni; aq = aqueous phase, nb = nitrobenzene phase) were evaluated.
E. Makrlík, P. Vaňura
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Journal of Electroanalytical Chemistry, 1983
Abstract The association of the caesium ion, Cs+, with the tetraphenylborate anion, TPB−, in a nitrobenzene medium was studied by two independent methods: the radiometric extraction method and the method of cyclic voltammetry at the interface of two immiscible electrolyte solutions (ITIES). Both methods permit the association constant of the reaction
Emanuel Makrlík, Le Quoc Hung
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Abstract The association of the caesium ion, Cs+, with the tetraphenylborate anion, TPB−, in a nitrobenzene medium was studied by two independent methods: the radiometric extraction method and the method of cyclic voltammetry at the interface of two immiscible electrolyte solutions (ITIES). Both methods permit the association constant of the reaction
Emanuel Makrlík, Le Quoc Hung
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Journal of Radioanalytical and Nuclear Chemistry, 2007
A rapid extraction separation of microamounts of Sr2+ from Y3+ using HCl, benzo-15-crown-5 (B15C5) and hydrogen dicarbollylcobaltate (H+B-) in the two-phase water-nitrobenzene system was developed. The reached separation factor α(Sr/Y) was higher than 105.
E. Makrlík, P. Vaňura
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A rapid extraction separation of microamounts of Sr2+ from Y3+ using HCl, benzo-15-crown-5 (B15C5) and hydrogen dicarbollylcobaltate (H+B-) in the two-phase water-nitrobenzene system was developed. The reached separation factor α(Sr/Y) was higher than 105.
E. Makrlík, P. Vaňura
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