Assessment of annual effective dose from 238U and 226Ra due to consumption of foodstuffs by inhabitants of Tehran city, Iran

The concentrations of (238)U and (226)Ra were determined in different foodstuffs purchased from markets in Tehran. Determinations of the radionuclides have been carried out using alpha spectrometry technique, on samples of egg, lentil, potato, rice, soya, spinach, tea and wheat. Average concentratio...

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Bibliographic Details
Published inRadiation protection dosimetry Vol. 121; no. 3; p. 330
Main Authors Hosseini, T, Fathivand, A A, Abbasisiar, F, Karimi, M, Barati, H
Format Journal Article
LanguageEnglish
Published England 01.12.2006
Subjects
Food Contamination, Radioactive - analysis
Humans
Iran
Radiation Monitoring
Radium - analysis
Uranium - analysis
Vegetables
Iran
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Summary:The concentrations of (238)U and (226)Ra were determined in different foodstuffs purchased from markets in Tehran. Determinations of the radionuclides have been carried out using alpha spectrometry technique, on samples of egg, lentil, potato, rice, soya, spinach, tea and wheat. Average concentrations of natural radionuclides and foodstuff consumption rate were used to assess annual intake and based on intake values, the annual effective ingestion dose has been estimated for Tehran city residents. The measurement results show that soya has the maximum concentration of (238)U equal to 15.6 +/- 2.6 mBq kg(-1) and tea has the maximum concentration of (226)Ra equal to 1153.3 +/- 265.3 mBq kg(-1). Besides, the maximum annual effective dose from (238)U and (226)Ra were assessed to be 2.88 x 10(-2) +/- 7.20 x 10(-3) and 2.15 +/- 0.54 muSv, respectively, from wheat samples.
ISSN:0144-8420
1742-3406
DOI:10.1093/rpd/ncl030