Alpha and gamma spectrometry for determination of natural and artificial radionuclides in tea, herbal tea and camomile marketed in Italy

Alpha and gamma spectrometry for determination of natural and artificial radionuclides in tea,... Several kinds of tea, camomile and herbal tea were analysed to determine natural and artificial radioactivity. The radionuclides were determined by alpha ( 210 Po) and gamma ( 228 Ac, 214 Pb, 214 Bi, 210 Pb, 40 K and 137 Cs) spectrometry. 228 Ac ranged between 0.6 and 9.0 Bq kg −1 dry ; 210 Po between 1.90 and 36.1 Bq kg −1 dry ; 214 Pb and 214 Bi between 0.7 and 4.9 Bq kg −1 dry ; 210 Pb between < 10.0 and 58.9 Bq kg −1 dry ; 40 K between 463 and 936 Bq kg −1 dry ; 137 Cs between < 0.3 and 2.6 Bq kg −1 dry . The percentage of 210 Po extraction in infusion was also determined; the arithmetical mean value of percentage of 210 Po extraction resulted 20.7 ± 7.50. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Microchemical Journal Elsevier

Alpha and gamma spectrometry for determination of natural and artificial radionuclides in tea, herbal tea and camomile marketed in Italy

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Publisher
Elsevier
Copyright
Copyright © 2011 Elsevier B.V.
ISSN
0026-265X
eISSN
1095-9149
D.O.I.
10.1016/j.microc.2011.01.005
Publisher site
See Article on Publisher Site

Abstract

Several kinds of tea, camomile and herbal tea were analysed to determine natural and artificial radioactivity. The radionuclides were determined by alpha ( 210 Po) and gamma ( 228 Ac, 214 Pb, 214 Bi, 210 Pb, 40 K and 137 Cs) spectrometry. 228 Ac ranged between 0.6 and 9.0 Bq kg −1 dry ; 210 Po between 1.90 and 36.1 Bq kg −1 dry ; 214 Pb and 214 Bi between 0.7 and 4.9 Bq kg −1 dry ; 210 Pb between < 10.0 and 58.9 Bq kg −1 dry ; 40 K between 463 and 936 Bq kg −1 dry ; 137 Cs between < 0.3 and 2.6 Bq kg −1 dry . The percentage of 210 Po extraction in infusion was also determined; the arithmetical mean value of percentage of 210 Po extraction resulted 20.7 ± 7.50.

Journal

Microchemical JournalElsevier

Published: May 1, 2011

References

  • Radioactive trace measurements of some exported foods from the South of Brazil
    Scheibel, V.; Appoloni, C.A.
  • Radiological characterization of phosphate fertilizers: comparison between alpha and gamma spectrometry
    Roselli, C.; Desideri, D.; Meli, M.A.

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