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Radiation Protection Dosimetry Advance Access originally published online on July 20, 2004
Radiation Protection Dosimetry 2004 111(2):205-210; doi:10.1093/rpd/nch335
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Radiation Protection Dosimetry Vol. 111, No. 2 © Oxford University Press 2004; all rights reserved

Activity concentrations and mean annual effective dose of foodstuffs on the island of Tenerife, Spain

F. Hernández, J. Hernández-Armas*, A. Catalán, J. C. Fernández-Aldecoa and M. I. Landeras

Laboratorio de Física Médica y Radioactividad Ambiental, Departamento de Medicina Física y Farmacología, University of La Laguna, 38320 La Laguna, Tenerife, Spain

* Corresponding author: jharmas{at}ull.es

A total of 26 different food types and 12 elaborated diets were analysed by low-level gamma spectrometry to measure their content of 238U(234Th), 228Ra(228Ac), 226Ra(214Pb), 210Pb, 137Cs and 40K. The concentrations of these radionuclides measured in some imported foodstuffs were compared with those measured in some locally produced ones. Moreover, the concentrations found in the analysed foodstuffs and composite diets were compared with the data available in literature from other locations, such as Egypt, Brazil, Poland and Hong Kong. 40K contributed highest to the daily dose produced by the intake of comestibles. The largest 40K concentrations were measured in the chickpeas and beans with 380 ± 30 and 380 ± 20 Bq kg–1 fresh weights, respectively. The artificial radionuclide 137Cs was measured only above detection limits in the potatoes and sweet potatoes. A mean annual effective dose of 362 µSv with a standard deviation of 110 µSv was calculated from the composite diets.


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