[Studies on trace amounts of 137Cs in environmental samples--determination of 137Cs in agricultural and livestock products (author's transl)].
A convenient method for the determination of trace amounts of 137Cs in agricultural and livestock products was studied by use of a low back-ground beta-ray spectrometer. Simplification, rapidification and accuracy in the determination of trace amounts of 137Cs in environmental samples were aimed at and designed. The beta-ray spectra, which were measured by the low back-ground beta-ray spectrometer on the counting sample after chemical separation (AMP-H2PtCl6 method), were analyzed by means of the weighted least squares method using an automatic analyzer, and then radioactivities of 40K, 87Rb and 137Cs were determined. The results obtained by this method were in good agreement with the results obtained by conventional method using a low back-ground GM counter after chemical separation (AMP-Bio-Rex.40-H2PtCl6 method) in the determination of 137Cs, and then applicability for environmental samples was studied. The radioactivity of 137Cs only could be determined by this method without using Bio-Rex.40 cation exchange resin to remove impurities such as 40K and 67Rb.
D000383:Agriculture; D000818:Animals; D002417:Cattle; D002588:Cesium Radioisotopes / Q000032:analysis*; D004583:Electrons; D004785:Environmental Pollutants / Q000032:analysis*; D008892:Milk / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods; D011839:Radiation, Ionizing; D011848:Radioactive Pollutants / Q000032:analysis*; D013057:Spectrum Analysis; D014675:Vegetables / Q000032:analysis
D002588:Cesium Radioisotopes; D004785:Environmental Pollutants; D011848:Radioactive Pollutants