2011•Hedianzixue yu tance jishuRequires access

Radioactivity Measurement of ~(226)Ra,~(232)Th,and ~(40)K in Environmental Comparison Sample Using γ Spectrometry

Yungang Zhao

Abstract

The radioactivity analysis method of natural radionuclide 226Ra、232Th and 40K is discussed.The environmental comparison sample which prepared by National Institute of Metrology is measured by using HPGe γspectrometry.The radioactivities of 226Ra、232Th and 40K in this sample are 179±20 Bq、194±21 Bq and 565±62 Bq(k=2) respectively.The results are agreement with the reference radioactivities.

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Key concepts: Gamma ray spectrometry, Radionuclide, Radiochemistry, Sample (material), Mass spectrometry, Environmental radioactivity, Natural radioactivity, Environmental science