A review of the TAEA proficiency test on natural and anthropogenic radionuclides activities in black tea

Yeltepe E., Sahin N. K., ASLAN N., Hult M., Ozcayan G., Wershofen H., ...Daha Fazla

APPLIED RADIATION AND ISOTOPES, cilt.134, ss.40-44, 2018 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 134
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.apradiso.2017.10.011
  • Dergi Adı: APPLIED RADIATION AND ISOTOPES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.40-44
  • Anahtar Kelimeler: Radioactivity in tea powder, Radioactivity proficiency test, Environmental gamma ray spectrometry, Cs-137, K-40, Sr-90
  • Ankara Hacı Bayram Veli Üniversitesi Adresli: Evet

Özet

A proficiency test amongst 15 Turkish laboratories with participation of 5 non-Turkish laboratories was organized to determine the Cs-137, K-40 and Sr-90 massic activities in black tea powder samples. The bulk material, consisting of tea produced in 2014, was mixed with contaminated tea that was withdrawn from the market after the Chernobyl accident. Nineteen laboratories reported 41 results. The evaluation of the results was based on the accuracy and precision criteria adopted by the IAEA Proficiency Testing Group and resulted in 49% acceptable results, 19% acceptable with warning and 32% were found to be not acceptable.