Separation of magnesium isotopes by N4S2 azacrown ion exchanger |
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| Authors: | D W Kim J S Jeon C 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) 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 ion exchange with 1,16-dithia-4,7,10,13-tetraazacyclooctadecane-4,7,10,13-tetramerrifield
peptide resinN4S2·4M] synthesized recently. The capacity of novel N4S2 azacrown ion exchanger was 0.34 meq/g dry resin. The heavier isotopes of magnesium concentrated in the resin phase, while
the lighter isotopes are enriched in the solution phase. The glass ion exchange column used was 30 cm long with inner diameter
of 0.2 cm, and the 1.0M NH4Cl solution was used as an eluent. The separation factors of24Mg−25Mg,25Mg−26Mg, and24Mg−26Mg were 1.047, 1007, and 1.008, respectively. |
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