Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Separation of Lithium Isotopes by Porous Sulfonated Styrene-Divinylbenzene Copolymer Ionexchanger

Porous Sulfonated Styrene-Divinylbenzene Copolymer Ionexchanger 에 의한 리튬 동위원소의 분리

  • Dong Won Kim (Department of Chemistry, College of Natural Sciences, Chungbuk National University) ;
  • Ki Suck Maeng (Department of Chemical Engineering, Chungnam National University) ;
  • Hae Young Song (Department of Material Engineering, Chungnam National University) ;
  • Hae Il Ryu (Department of Chemical Engineering, Chungnam National University)
  • 김동원 (충북대학교 자연과학대학 화학과) ;
  • 맹기석 (충남대학교 공업교육대학 화학과) ;
  • 송해영 (충남대학교 공업교육대학 재료공학과) ;
  • 류해일 (충남대학교 공업교육대학 화학과)
  • Published : 1983.06.20
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Abstract

The lithium isotopes separation experiments were carried out in hydrochloric acid with cation exchanger systerns. In these experiments were employed porous sulfonated styrene-divinylbenzene copolymer and Dowex 50w-x8 as cation exchanger. The contents of lithium of the fraction were determined with atomic absorption spectrophotometer. The relative mass of lithium isotopes of the fractions was analyzed on a mass spectrometer. The isotope separation factors of lithium were calculated from the isotope compositions of these eluted fractions. Separation factor for the system in hydrochloric acid and porous sulfonated styrene-divinylbenzene copolymer was found to be 1.0020, and for the case of system in hydrochloric acid and Dowex 50w-x8 was 1.0011${\om}$0.0002. From these results, we found that the separation factor for porous sulfonated styrene-divinylbenzene copolymer ionexchanger is larger than value of Dowex 50w-x8 ionexchanger.

리튬동위원소의 분리 실험이 염산과 양이온 교환 수지를 사용하여 행하여졌다. 이 실험에서는 porous sulfonated styrene-divinylbenzene copolymer와 Dowex 50w-x8의 양이온 교환수지가 사용되었다. 리튬의 양은 원자 흡광 분석기를 사용하여 측정되었다. 리튬 동위 원소의 상대적 질량은 질량 분석기로 측정하였다. 동위 원소의 분리인자는 분별된 용출액의 동위 원소 조성으로 부터 계산되었다. 분리 인자의 값은 염산과 porous sulfonated styrene-divinylbenzene copolymer system에서 1.0020이었고, 염산과 Dowex 50w-x8 system에서 1.0011${\om}$0.0002이었다. 이와 같은 결과로부터 우리들은 분리 인자의 값이 Dowex 50w-x8에서 보다 porous sulfonated styrene-divinylbenzene copolymer에서 더 크게 나타남을 알 수 있었다.

Keywords

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