Separation of magnesium isotopes by chemical exchange with a polymer-bound azacrown compound |
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| Authors: | D W Kim B G Kim C S Kim Y K Jeong J S Kim Y S Jeon |
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| Institution: | (1) Department of Chemistry, Physical Chemistry Laboratory, College of Natural Sciences, Chungbuk National University, 361-763 Cheongju, Republic of Korea;(2) Department of Chemistry Education, College of Education, Chungbuk National University, 361-763 Cheongju, Republic of Korea;(3) Department of Chemistry, Konyang University, 320-800 Nonsan, Republic of Korea;(4) Division of Chemical Analysis, Korea Atomic Energy Research Institute, 305-606 Daejon, Republic of Korea |
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| Abstract: | The chromatographic separation of magnesium isotopes was investigated by chemical exchange with the recently synthesized 1-oxa-4,7,10,13-tetraazacyclopentadecane-4,7,10,13-tetramerrifield peptide resin N4O·4M]. The capacity of the novel N4O-4 Merrifield ion exchanger was 1.0 meq/g dry resin. The heavier isotope26Mg concentrated in the resin phase, while the lighter isotopes24Mg, and25Mg are enriched in the fluid phase. The maximum separation factors  , for25Mg–26Mg and24Mg–26Mg were found to be 1.048 and 1.022, respectively, at 20.0±0.02 °C with 2.0 M ammonium chloride solution as an eluent. |
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