Separation of Magnesium Isotopes by 1-Aza-12-Crown-4 Bonded Merrifield Peptide Resin

Dong Won Kim, Byong Kwang Joen, Soo Han Kwon, Jae Sup Shin, Hai Il Ryu, Jong Seung Kim, Young Shin Joen

Research output: Contribution to journalArticlepeer-review


Magnesium isotope separation was investigated by chemical ion exchange with the 1-aza-12-crown-4 bonded Merrifield peptide resin using elution chromatography. The capacity of the novel azacrown ion exchanger was 1.0 meq/g dry resin. The heavier isotopes of magnesium were enriched in the resin phase, while the lighter isotopes were enriched in the solution phase. The single stage separation factor was determined according to the method of Glueckauf from the elution curve and isotopic assays. The separation factors of 24Mg2+-25Mg2+, 24Mg2+-26Mg2+, and 25Mg2+-26Mg2+ isotope pairs were 1.012, 1.024, and 1.011, respectively.

Original languageEnglish
Pages (from-to)750-754
Number of pages5
JournalKorean Journal of Chemical Engineering
Issue number5
Publication statusPublished - 2001 Sept
Externally publishedYes


  • Capacity
  • Chromatography
  • Distribution Coefficient
  • Isotope Effect
  • Magnesium Isotope
  • Monoazacrown
  • Separation

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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