Membrane transport of metal ions with lipophilic aminomethylphosphine oxides |
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| Authors: | R A Cherkasov A R Garifzyanov R R Galeev N V Kurnosova R R Davletshin S V Zakharov |
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| Institution: | (1) Department of Chemistry, Birjand University, P.O. BOX 414, Birjand, Iran;(2) Department of Chemistry, Ferdowsi University, Mashad, Iran |
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| Abstract: | The processes of membrane transport of ions of scandium(III), samarium(III), gadolinium(III), neodymium(III), aluminum(III),
and a number of alkali and alkaline earth metals through liquid membrane impregnated with aminophosphoryl carriers of different
structures were studied. Selectivity of bis (dialkylphosphinyl)amines towards scandium was found to be significantly higher
than the selectivity of diphosphinylpiperazine and monophosphinylamine in particular. The dependence of transfer efficiency
on the concentration of substrates and carriers was revealed. Optimal conditions for transporting rare and trace metal ions
through the membrane were found, and the mechanism of transmembrane transport was discussed. |
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