Natural radiation levels in powdered milk samples

Food Science and Technology (Campinas)

F. L. Melquiades²  C. R. Appoloni¹ 

[1],Universidade Estadual do Centro Oeste Department of Chemistry and Physics Guarapuava PR ,Brazil

关键词: gamma-ray spectrometry;    radioactivity;    milk;    food;    radioatividade;    espectrometria gama;    leite;   

DOI  :  10.1590/S0101-20612004000400004

来源: SciELO

【 摘 要 】

The control and monitoring of radioactive elements in foodstuffs is fundamental for human health maintenance. This work presents procedures to measure radioactivity levels in powdered milk samples and also a brief discussion of radionuclide transference from the environment to mankind. The measurements were performed utilizing a high-resolution gamma-ray spectrometer using an HPGe detector. The results allowed the quantification of 40K, 137Cs and 208Tl radionuclides. For 40K the average activity was 482 ± 37 Bq/kg and for 137Cs and 208Tl the lower level of detection was, respectively, 3.7 ± 1.1 and 0.5 ± 0.2 (Bq/kg). The results obtained for the milk samples were compared to data found in the literature and to the limits established by the Brazilian National Commission of Nuclear Energy (CNEN) to assure its safety to human consuption.

【 授权许可】

CC BY   
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