Diffusional and conductive membrane permeabilities to ions in liquid membrane-aqueous inorganic electrolyte system.
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概要
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Utilizing a liquid membrane-aqueous inorganic electrolyte system, the membrane permeability to ion α estimated from the conductance and potential data, <I>P</I><SUB>α</SUB>, and that at zero electric current estimated from the salt flow and potential data, <I>P</I><SUB>α</SUB><SUP>0</SUP>, were determined. A solution of calcium hexadecyl sulfate dissolved in 1-octanol and calcium chloride were used as the liquid membrane and the inorganic electrolyte, respectively. The results showed that <I>P</I><SUB>ca</SUB><SUP>0</SUP>⁄<I>P</I><SUB>cl</SUB><SUP>0</SUP>≈<I>P</I><SUB>ca</SUB>⁄<I>P</I><SUB>cl</SUB>≈10 and <I>P</I><SUB>cl</SUB><SUP>0</SUP>≈<I>P</I><SUB>s</SUB><SUP>0</SUP>, where subscript s refers to the salt. The latter result indicates that the diffusion of a salt through the membrane is governed by the co-ion permeation. It was shown that <I>P</I><SUB>α</SUB><SUP>0</SUP> is smaller than <I>P</I><SUB>α</SUB> and that <I>P</I><SUB>α</SUB> decreases with increase in the concentration of external calcium chloride solution while <I>P</I><SUB>α</SUB><SUP>0</SUP> is nearly independent of the concentration. The difference between <I>P</I><SUB>α</SUB> and <I>P</I><SUB>α</SUB><SUP>0</SUP> can be explained in terms of the elements of permeability and conductance matrices estimated from the electrical and salt flow data.
- 公益社団法人 日本化学会の論文
著者
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Kimizuka Hideo
Department of Chemistry Faculty of Science Kyushu University
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Nomura Kazuo
Laboratory of Chemistry, College of General Education, Kyushu University 01
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Matsubara Akira
Laboratory of Chemistry, College of General Education, Kyushu University 01
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