Cyclic neutron activation analysis for determination of selenium in food samples using 77mSe

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Abstract

Cyclic neutron activation analysis method was conducted for determination of Se in food samples. High accuracy and good precision were proved by analyzing certified reference materials (CRMs) of chicken (GBW10018), rice (GBW10010) and cabbage (GBW10014). The detection limits for the three CRMs reached 0.16, 0.66 and 1.2 ng after 6 cycles at the 161.9 keV γ-peak from 77mSe, under a neutron flux of 9.0 × 1011 n cm−2 s−1 and the conditions of 30 s irradiation, 2 s decay, 30 s counting and 2 s waiting, significantly lower than those of conventional neutron activation analysis without any cycles, which were 0.94, 3.6 and 4.3 ng, respectively.

Keywords

Cyclic neutron activation analysis Selenium Food 
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Notes

Acknowledgements

This work is funded by the National Natural Science Foundation of China (10775099 and 10490180) and SZU R/D Fund (200620). Authors thank. H.G. Zhao and Q. Luo for their dedicated cooperation.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • H. Zhang
    • 1
  • Z. F. Chai
    • 1
    • 2
  • W. Y. Qing
    • 1
  • H. C. Chen
    • 1
  1. 1.Institute of Nuclear Techniques, College of Physics Science and TechnologyShenzhen UniversityShenzhenChina
  2. 2.Laboratory of Biological Safety and Key Laboratory of Nuclear Analytical Techniques, Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina

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