A Simultaneous Determination of Chromium, Iron, Lanthanum, Scandium and Zinc in River Water by Neutron Activation

중성자 방사화에 의한 시료중의 크롬, 철, 란탄, 스칸듐 및 아연의 동시정량

  • 이인종 (한국 원자력 연구소) ;
  • 김시중 (한국원자력연구소) ;
  • 이철 (한국원자력연구소 방사분석실)
  • Published : 1977.12.30


A neutron activation method has been developed for the simultaneous determination of chromium, iron, lanthanum, scandium and zinc in river-water samples. The sample is sealed in the silica ampoule without pretreatment and irradiated for a week at a thermal neutron flux of $1{\times}10^{13}n{\cdot}cm^{-2}{\cdot}sec^{-1}$. After cooling for about two days, the elements in the sample are sequentially extracted at different pH by 0.1M oxine-chloroform solution. The organic layers are checked by Gamma-ray spectrometry with $″3\;{\times}\;3″$ NaI (T1) detector connected to a 800-channel pulse hight analyzer. The ppb concentration of the elements in most of river-water samples could be determined by this method. The tracer study for the quantitative separation of the elements was also carried out.



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