Abstract
A total of 71 samples from 23 different foodstuffs, namely root vegetables (beetroot, carrot, onion, potato, radish and turnip), leafy vegetables (lettuce, parsley, spinach and white cabbage) and lentils, kidneys, soya, eggs, rice, meat, tomato paste, cooking oil, salami, tea, bread, sausage and cubic sugar, were purchased from markets and analysed by gamma spectrometry for their 226Ra and 228Ra concentrations. The highest concentrations of 226Ra and 228Ra were determined in tea samples with 2000 and 1200 mBq kg-1, respectively. The maximum estimated annual effective doses for 226Ra and 228Ra due to consumption of foodstuffs were determined to be 1.843 and 0.890 µSv, respectively, from bread samples, whereas the minimum estimated annual effective doses for 226Ra and 228Ra were determined to be 0.016 and 0.028 µSv from lentil and tomato paste samples, respectively.
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