Nuclear Techniques

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γ spectrometry analytical method of radionuclide

QING Yunhua, LIU Pan, ZHENG Qishan, ZHANG Yan, HUANG Lihua   

  1. Fujian Center for Prevention and Control of Occupational Diseases and Chemical Poisoning, Fuzhou 350000, China
  • Received:2017-02-20 Revised:2017-04-08 Online:2017-09-10 Published:2017-09-06

Abstract:

Background: Currently, mixture calibration sources, generally used in laboratory for saving cost, are limited in spectrum analysis. Purpose: The aim is to study the suitability of two spectrum analysis methods under the condition of mixture calibration source. Methods: In this work, four radionuclides, 241Am, 60Co, 137Cs, and 40K, were measured by HPGe γ spectrometry and analyzed with relative comparison and efficiency curve methods under the condition of the mixture calibration source. Results: Relative comparison method can not calculate the radioactive activity of test nuclide influenced by interference nuclide, if interference nuclide could be ignored in mixture calibration source. Conclusion: Relative comparison method has an advantage comparing with efficiency curve method, if interference nuclide has no effect on test nuclide included in sample, but has a great effect on test nuclide included in mixture calibration source. However, efficiency curve method has an advantage comparing with relative comparison method. If interference nuclide has a great effect on test nuclide included in sample, but no effect appears on test nuclide included in mixture calibration source.

Key words: HPGe &gamma, spectrometry, Mixture calibration source, Analytical methods, Radionuclides

CLC Number: 

  • TL12