Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Enrichment of Lithium Isotope by an Ion Exchange Resin Containing Azacrown Ether

아자크라운 에터를 포함한 이온교환수지에 의한 리튬 동위원소의 농축

  • Kim, Dong Won (Department of Chemistry, Physical Chemistry Laboratory, College of Natural Science, Chungbuk National University) ;
  • Chung, Yongsoon (Department of Chemistry, Physical Chemistry Laboratory, College of Natural Science, Chungbuk National University) ;
  • Choi, Ki Young (Department of Chemistry, College of Natural Science, Mokwon University) ;
  • Lee, Yong-Ill (Department of Chemistry, Changwon National University) ;
  • Jeong, Young Kyu (Department of Chemistry, Physical Chemistry Laboratory, College of Natural Science, Chungbuk National University) ;
  • Jang, Young Hun (Department of Chemistry, Physical Chemistry Laboratory, College of Natural Science, Chungbuk National University)
  • 김동원 (충북대학교 자연과학대학 화학과) ;
  • 정용순 (충북대학교 자연과학대학 화학과) ;
  • 최기영 (목원대학교 이공대학 화학과) ;
  • 이용일 (창원대학교 화학과) ;
  • 정영규 (충북대학교 자연과학대학 화학과) ;
  • 장영훈 (충북대학교 자연과학대학 화학과)
  • Received : 1997.06.12
  • Published : 1997.12.25
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Abstract

Separation factor for $^6Li$ and $^7Li$ have been determined using ion exchange resin having 1,7,13-trioxa-4,10,16-triazacyclooctadecane($N_3O_3$) as an anchor group. The lighter isotope, $^6Li$ is concentrated in the solution phase, while the heavior isotope, $^7Li$ is enriched in the resin phase. By Ccolumnl chromatography[0.9cm(I.D)${\times}$20cm(height)] using 2.0M ammonium chloride solution as an eluent, single separation factor, ${\alpha}$, 1.009. i.e.$(^7Li/^6Li)_{resin}$/$(^7Li/^6Li)_{solution}$ was obtained by the Glueckauf theory from the elution curve and isotope ratios.

Anchor group으로서 1,7,13-trioxa-4,10,16-triazacyclooctadecane($N_3O_3$)을 가지고 있는 이온교환수지를 사용하여 $^6Li$와 $^7Li$의 분리인자를 측정하였다. 가벼운 동위원소 $^6Li$는 액상에, 무거운 동위원소 $^7Li$는 이온교환수지상에 농축되었다. 2.0M 염화암모늄 용액을 용리액으로 사용한 컬럼 [0.9cm(내경)${\times}$20cm(높이)] 크로마토그래피에 의하여, 1.009의 분리인자, ${\alpha}$, $(^7Li/^6Li)_{resin}$/$(^7Li/^6Li)_{solution}$값을 얻었다. 이 값은 용리곡선과 동위원소비로부터 Glueckauf 이론을 적응하여 얻은 것이다.

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Acknowledgement

Supported by : Ministry of Education