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A Comparative Study on Radiochemical Pre-treatment Methods for Airborne Uranium-Isotropic Analysis

공기 중 우라늄 동위원소 분석을 위한 방사화학 전처리방법에 대한 비교 분석 연구

  • Kang, Han-Byeol (Korea Institute of Nuclear Non-proliferation and Control) ;
  • Chung, Heejun (Korea Institute of Nuclear Non-proliferation and Control) ;
  • Park, Seunghoon (Korea Institute of Nuclear Non-proliferation and Control) ;
  • Shin, Jung-Ki (Korea Institute of Nuclear Non-proliferation and Control) ;
  • Kwak, Sung-Woo (Korea Institute of Nuclear Non-proliferation and Control)
  • Received : 2015.02.16
  • Accepted : 2015.06.11
  • Published : 2015.06.30

Abstract

Alpha spectrometry is typically used for the assessment of uranium particle concentrations and its accuracy can be directly related to the accuracy in which the radiochemical pre-treatment is conducted. Ashing and alkali fusion methods are typically used but the ashing method requires longer analysis time and the alkali fusion method is extremely costly. Therefore, a new pre-treatment method using ultrasonic cleaning was developed and its experimental result was compared against the two conventional methods in terms of pre-treatment time, convenience, cost, and recovery rate of a target material. The results that were obtained by the conventional methods(ashing and alkali fusion) and the new method were compared. Consequently, even though the shorter pre-treatment time was required, the new technique showed almost same recovery rate comparing with two conventional methods. The new method was also featured by its relatively lower cost and a simpler process than two conventional methods.

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