Chromatographic separation of rare earth pairs by a chelating resin having bis(carboxymethyl)amino groups.

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概要

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• Adsorption properties of rare earth elements toward a cross-linked polystyrene resin having bis(carboxymethyl)amino groups (CMA) have been studied. The selectivity sequence of the resin for a series of rare earth metals was in good accordance with that of the corresponding stability constants of diethylenetriamine-<I>N</I>,<I>N</I>,<I>N</I>′,<I>N</I>″,<I>N</I>″-pentaacetic acid (DTPA) complexes. The chromatographic separation of La(III)/Pr(III), Nd(III)/Sm(III), and Y(III)/Gd(III) has been carried out by use of the present resin. The chromatographic conditions were empirically evaluated in terms of resolution (<I>R</I><SUB>s</SUB>), with varying column length, pH of the eluent, the flow rate and the column temperature.

• 公益社団法人 日本化学会の論文

著者

• M. Suzuki

  Government Industrial Research Institute

• Yokoyama Toshiro

  Government Industrial Research Institute

• Kanesato Masatoshi

  Government Industrial Research Institute

関連論文

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• The separation and concentration of gallium(III) and/or indium(III) using polystyrene resins functionalized with complexane-type ligands.

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