Hou Qingmei,Li Wenyuan,Lü Huimin,et al.Simuttaμeous determination of thorium isotopes in environmental and bio-logical samples[J].Chinese Journal of Radiological Medicine and Protection,1990,10(4):243-247
Simuttaμeous determination of thorium isotopes in environmental and bio-logical samples
Received:August 24, 1989  
DOI:
KeyWords:human autopsy  soft tissues  bones  soil  rare earth  ore dust  thorium isotopes  simultaneous determination
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Author NameAffiliation
Hou Qingmei Laboratory of Industria Hygiene, Ministry of Public Health, Beijing 
Li Wenyuan Laboratory of Industria Hygiene, Ministry of Public Health, Beijing 
Lü Huimin Laboratory of Industria Hygiene, Ministry of Public Health, Beijing 
魏宗源 Laboratory of Industria Hygiene, Ministry of Public Health, Beijing 
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Abstract::
      Simultulnecus dctermination of thorium isotopes in human autopsy soft tissues, human bones, soil and rare earth ore dust is reported in this paper.The method consists of sample digestion, separation of thorium isotopes and electrodep05ition followed by alpha spectrometric measurement with a surface barrier detector. The contents of 232Th, 230Th and 228Th in each sample are determined simultaneously. In this method, 234Th is used as an internal racer for the correction of chemical recovery of thorium.
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