Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Determination of Fission Products in Simulated Nuclear Spent Fuels by Cation.Anion Exchange Chromatography and Inductively Coupled Plasma Atomic Emission Spectrometry

양.음이온교환 크로마토그래피와 유도결합플라스마 원자방출분광법을 이용한 모의 사용후핵연료 중 핵분열생성물 분석

  • Choi, Kwang Soon (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Sohn, Se Chul (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Pyo, Hyung Yeol (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Suh, Moo Yul (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Kim, Do Yang (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Park, Yang Soon (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Jee, Kwang Yong (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute)
  • 최광순 (한국원자력연구소 원자력화학연구팀) ;
  • 손세철 (한국원자력연구소 원자력화학연구팀) ;
  • 표형렬 (한국원자력연구소 원자력화학연구팀) ;
  • 서무열 (한국원자력연구소 원자력화학연구팀) ;
  • 김도양 (한국원자력연구소 원자력화학연구팀) ;
  • 박양순 (한국원자력연구소 원자력화학연구팀) ;
  • 지광용 (한국원자력연구소 원자력화학연구팀)
  • Received : 2000.04.11
  • Published : 2000.08.25
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Abstract

The simulated nuclear spent fuel (SIMFUEL) containing the platinum group elements which will not be dissolved in a nitric acid was completely dissolved with a acid digestion bomb. The metallic elements separated in the SIMFUEL were measured by inductively coupled plasma atomic emission spectrometry (ICP-AES). Because the peaks of metallic elements were spectrally interfered by uranium spectrum, uranium and metallic elements were separated by cation exchange resin for Mo, Pd, Rh and Ru and by anion exchange resin for Ba, Ce, La, Nd, Rh, Sr, Y and Zr, respectively. The recovery of Mo, Pd, Rh and Ru after separation by cation exchange chromatography found to be 99-103% and anion exchange separation showed 96.5-107% of recovery except Y with the simulated solution whose concentration was similar to the spent nuclear fuel. The relative standard deviation of this method showed 1.3-6.7% in the SIMFUEL whose concentrations of metallic elements were between several $10^2-10^3$ppm.

질산에 잘 녹지 않는 백금족 원소를 포함하고 있는 모의 사용후핵연료(SIMfUEL)를 고압산분해 방법으로 녹였다. 핵분열생성물 원소들은 우라늄과 분리한 다음 유도결합플라스마 원자방출분광법 (ICP-AES)으로 분석하였다. 핵분열생성물 원소들의 피크가 우라늄 스펙트럼으로부터 분광학적 간섭을 받으므로 Mo, Pd, Rh 및 Ru은 양이온교환수지로 Ba, Ce, La, Nd, Rh, Sr, Y 및 Zr는 음이온교환수지로 우라늄과 원소들을 군분리하였다. 사용후핵연료의 조성과 비슷한 모의 핵연료용액을 만들어 양이온 교환수지로 분리한 다음 측정한 회수율은 99-103%이고, 음이온교환수지로 분리하고 측정한 회수율은 이트륨을 제외하고 96.5-107%이었다. 이 방법을 금속원소의 농도가 수백에서 수천 ppm 존재하는 SIMFUEL에 적용하여 측정한 상대표준편차는 1.3-6.7%이었다.

Keywords

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