Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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A Study on Benzene Synthesis for the Radiocarbon Dating

방사성탄소 연대측정을 위한 벤젠합성법 연구

  • Kim, Nak Bae (Activation Analysis Research Group, Korea Institute of Geology, Mining and Materials) ;
  • Woo, Hyung Joo (Activation Analysis Research Group, Korea Institute of Geology, Mining and Materials) ;
  • Hong, Wan (Activation Analysis Research Group, Korea Institute of Geology, Mining and Materials) ;
  • Cho, Soo Young (Activation Analysis Research Group, Korea Institute of Geology, Mining and Materials)
  • 김낙배 (한국자원연구소 방사화분석연구그룹) ;
  • 우형주 (한국자원연구소 방사화분석연구그룹) ;
  • 홍완 (한국자원연구소 방사화분석연구그룹) ;
  • 조수영 (한국자원연구소 방사화분석연구그룹)
  • Received : 1992.01.10
  • Published : 1992.03.25
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Abstract

A benzene synthesizer was manufactured and has been used for the treatment of the various samples such as wood, charcoal, shell and soil for radiocarbon dating using liquid scintillation counter. The experimental conditions were optimized in each successive step of the synthesis of carbon dioxide, acetylene and the final product of benzene. Fifteen hours operation of the benzene synthesizer leads to product yields consistently in excess of 85% based on the content of calcium carbonate for the organic samples. Purity of the synthesized benzene was measured to be more than 99.9% by GC/MS.

벤젠합성장치를 제작하여 액체섬광계수법을 이용한 방사성탄소 연대측정 시료인 목재, 목탄, 패류, 토양 등의 시료의 처리에 이용하였다. 이산화탄소, 아세틸렌의 생성 및 최종적으로 얻어지는 벤젠으로 이어지는 합성과정별 실험조건을 최적화하였다. 본 벤젠합성기를 이용함으로써 유기시료의 경우, 15시간의 합성을 통하여 탄산칼슘 기준으로 85% 이상의 합성수율을 얻을 수 있었다. 합성된 벤젠의 순도는 GC/MS 측정결과 99.9% 이상이었다.

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