Preparation and metal-adsorption properties of the polymer-coated silica gel having iminodiacetate functional group.
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概要
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A new adsorbent containing an iminodiacetate group has been prepared by the surface modification of a polymer-coated silica gel. The obtained beads (SG–IDA) are porous and have a high specific surface area (≈350 m<SUP>2</SUP> g<SUP>−1</SUP>). The adsorption properties of SG-IDA, including the adsorption capacities, equilibrium distribution coefficients (<I>K</I><SUB>d</SUB>) and adsorption rates, have been examined for divalent metal ions. The selectivity order of SG–IDA is Cu(II)>Pb(II)>Ni(II)>Zn(II)>>Ca(II)>Mg(II). The SG–IDA shows appreciably high <I>K</I><SUB>d</SUB> values and rapid kinetics toward the adsorption of heavy metal ions. The concentration of 10 ppb level of metal ions [Cu(II), Zn(II), and Cd(II)] has been demonstrated using the SG-IDA column.
- 公益社団法人 日本化学会の論文
著者
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GOTO TOMIO
Government Industrial Research Institute
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Suzuki Toshishige
Government Industrial Research Institute
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Yokoyama Toshiro
Government Industrial Research Institute
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Itabashi Osamu
Government Industrial Research Institute
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Kimura Tetsuo
Government Industrial Research Institute
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