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Natural and artificial radionuclides in tea samples determined with gamma spectrometry

  • Phan Long Ho
  • Le Dinh Hung
  • Vu Tuan Minh
  • Dang Van Chinh
  • Tran Thien Thanh
  • Chau Van Tao
Article
  • 78 Downloads

Abstract

The aim of the present work is to determine natural and artificial radioactivities in the twenty tea samples available at the local Vietnamese market using gamma spectrometry with HPGe detector. The radioactivity concentrations of 238U, 232Th, 40K and 137Cs in their mean value were 3.4 ± 0.3 (Bq kg−1), 16.4 ± 0.8 (Bq kg−1), 564 ± 8 (Bq kg−1), and 1.6 ± 0.1 (Bq kg−1), respectively. The result was compared with the those found in the previous research.

Keywords

Gamma spectrometry Tea Natural and artificial radioactivity 

Notes

Acknowledgements

The authors would like to express our thanks to the two anonymous reviewers of this manuscript, for their critical review and helpful discussions.

References

  1. 1.
    Harb S (2007) Measurement of the radioactivity of 238U, 226Ra, 210Pb, 228Th, 232Th, 228Ra, 137Cs and 40K in tea using gamma-spectrometry. J Radioanal Nucl Chem 274(1):63–66CrossRefGoogle Scholar
  2. 2.
    Kiliç Ö, Belivermis M, Topcuoglu S, Çotuk Y (2009) 232Th, 238U, 40K, 137Cs radioactivity concentrations and 137Cs dose rate in Turkish market tea. Radiat Eff Defects Solids 164(2):138–143CrossRefGoogle Scholar
  3. 3.
    Görür FK, Keser R, Akcay N, Dizman S, Okumuşoğlu NT (2011) Radionuclides and heavy metals concentrations in Turkish market tea. Food Control 22:2065–2070CrossRefGoogle Scholar
  4. 4.
    Desideri D, Meli MA, Roseli C, Feduzi L (2011) Alpha and gamma spectrometry for determination of natural and artificial radionuclides in tea, herbal tea and chamomile marketed in Italy. Microchem J 98:170–175CrossRefGoogle Scholar
  5. 5.
    Cook MC, Stukel MJ, Zhang W, Mercier JF, Cooke MW (2016) The determination of Fukushima-derived cesium-134 and cesium-137 in Japanese green tea samples and their distribution subsequent to simulated beverage preparation. J Environ Radioact 153:23–30CrossRefGoogle Scholar
  6. 6.
    Yeltepe E, Şahin NK, Aslan N, Hult M, Özçayan G, Wershofen H, Yücel Ü (2018) A review of the TAEA proficiency test on natural and anthropogenic radionuclides activities in black tea. Appl Radiat Isot 134:40–44CrossRefGoogle Scholar
  7. 7.
    World Health Organization (2011) Guidelines for drinking-water quality. WHO Publications, GenevaGoogle Scholar
  8. 8.
    Thanh TT, Vuong LQ, Ho PL, Chuong HD, Nguyen VH, Tao CV (2018) Validation of an advanced analytical procedure applied to the measurement of environmental radioactivity. J Environ Radioact 184–185:109–113CrossRefGoogle Scholar
  9. 9.
    International Atomic Energy Agency (1987) Preparation of γ-ray spectrometry reference materials RGU-1, RGTh-1 and RGK-1. Report-IAEA/RL/148, ViennaGoogle Scholar
  10. 10.
    Vuong LQ, Chuong HD, Nguyen VH, Hung NQ, Thanh TT, Tao CV (2017) Revision of nuclear data of 235U and 226Ra for the 186-keV gamma-ray peak for the determination of activity in environmental sample. J Radioanal Nucl Chem 314(2):1273–1277CrossRefGoogle Scholar
  11. 11.
    Lépy MC, Ferreux L, Hamon C, Plagnard J (2008) Logiciel d’ajustement des courbes de rendement ACORES, Note technique LNHB 2008-45Google Scholar
  12. 12.
    GUM (2008) Evaluation of measurement data—introduction to the “Guide to the expression of uncertainty in measurement” and related document, BIPM. http://www.bipm.org
  13. 13.
    Food and Agriculture Organization of the United Nations (1995) Codex general standard for contamination and toxins in food and feed. Codex Stand:193–1995Google Scholar
  14. 14.
    Food and Agriculture Organization of the United Nations (2015) World tea production and trade current and future development. FAO Publications, GeneveGoogle Scholar
  15. 15.
    Population Reference Bureau (2013) 2013 world population data sheetGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Phan Long Ho
    • 1
    • 2
  • Le Dinh Hung
    • 2
  • Vu Tuan Minh
    • 2
  • Dang Van Chinh
    • 2
  • Tran Thien Thanh
    • 1
    • 3
  • Chau Van Tao
    • 1
    • 3
  1. 1.Department of Nuclear Physics, Faculty of Physics and Engineering PhysicsVNUHCM-University of ScienceHo Chi Minh CityVietnam
  2. 2.Institute of Public Health in Ho Chi Minh CityHo Chi Minh CityVietnam
  3. 3.Nuclear Technique LaboratoryVNUHCM-University of ScienceHo Chi Minh CityVietnam

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