Results 181 to 190 of about 19,763 (236)
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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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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 Electroanalytical Chemistry and Interfacial Electrochemistry, 1982
The transfer of the metal cation across the interface between two immiscible electrolyte solutions facilitated by complex formation with a ligand at the interface was investigated both theoretically and experimentally. The theory of single-scan voltammetry was derived which enables the complex stoichiometry (1:1, 1:2 or 1:3.
Daniel Homolka +2 more
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The transfer of the metal cation across the interface between two immiscible electrolyte solutions facilitated by complex formation with a ligand at the interface was investigated both theoretically and experimentally. The theory of single-scan voltammetry was derived which enables the complex stoichiometry (1:1, 1:2 or 1:3.
Daniel Homolka +2 more
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Extraction Distribution of 2-Nitroso-1-Naphthol in the Two-Phase Water-Nitrobenzene System
Zeitschrift für Physikalische Chemie, 2005Abstract General relations among the thermodynamic parameters, which characterize dissociation equilibria of an acid HA in both phases of a two-phase extraction system and ion transfers across the interface of this system, was formulated.
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Journal of Radioanalytical and Nuclear Chemistry Articles, 1993
Various volatile products formed in the γ-radiolysis of water-nitrobenzene-carbon tetrachloride two phase systems have been identified using GC-MS and GC-FTIR systems. The conditions for the separation of the products are described in detail. It was found that product formation is dependent on the composition of the systems.
J. Kuruc, M. K. Sahoo
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Various volatile products formed in the γ-radiolysis of water-nitrobenzene-carbon tetrachloride two phase systems have been identified using GC-MS and GC-FTIR systems. The conditions for the separation of the products are described in detail. It was found that product formation is dependent on the composition of the systems.
J. Kuruc, M. K. Sahoo
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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, 2002
A rapid extraction of trace amounts of strontium from calcium with a nitrobenzene solution of sodium dicarbollylcobaltate (NaDCC) in the presence of 15-crown-5 and the tetrasodium salt of ethylenediamine-N,N,N",N"-tetra-acetic acid (Na4L) in the aqueous phase was developed. The separation factor a(Sr/Ca) was approximately 105.
P. Vaňura, E. Makrlík
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A rapid extraction of trace amounts of strontium from calcium with a nitrobenzene solution of sodium dicarbollylcobaltate (NaDCC) in the presence of 15-crown-5 and the tetrasodium salt of ethylenediamine-N,N,N",N"-tetra-acetic acid (Na4L) in the aqueous phase was developed. The separation factor a(Sr/Ca) was approximately 105.
P. Vaňura, E. Makrlík
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Journal of Electroanalytical Chemistry, 1978 J. Chem. Soc., Faraday Trans., 1995
An experimental set-up consisting of a hollow glass tube and a beaker has been used to form a water–nitrobenzene–water three-phase system in a beaker. This system, with surfactant dissolved in one of the two aqueous phases and picric acid in the organic phase generated electric pulses.
Kazuo Miyamura +3 more
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An experimental set-up consisting of a hollow glass tube and a beaker has been used to form a water–nitrobenzene–water three-phase system in a beaker. This system, with surfactant dissolved in one of the two aqueous phases and picric acid in the organic phase generated electric pulses.
Kazuo Miyamura +3 more
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Collection of Czechoslovak Chemical Communications, 1991
General relations among thermodynamic parameters, which characterize the transfer of the ions H+ and OH- from the aqueous into nitrobenzene phase of the two-phase water-nitrobenzene extraction system and dissociation equilibria of H2O in both phases of this system, have been derived.
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General relations among thermodynamic parameters, which characterize the transfer of the ions H+ and OH- from the aqueous into nitrobenzene phase of the two-phase water-nitrobenzene extraction system and dissociation equilibria of H2O in both phases of this system, have been derived.
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