Natural and anthropogenic radioactivity of feedstuffs, mosses and soil in the Begrade environment, Serbia
2010
Grdović, S., Faculty of Veterinary Medicine, Belgrade (Serbia) | Vitorović, G., Faculty of Veterinary Medicine, Belgrade (Serbia) | Mitrović, B., Faculty of Veterinary Medicine, Belgrade (Serbia) | Andric, V., Vinca Institute of Nuclear Sciences, Belgrade (Serbia) | Petrujkić, B., Faculty of Veterinary Medicine, Belgrade (Serbia) | Obradović, M., Faculty of Veterinary Medicine, Belgrade (Serbia)
By gamma spectroscopic measurement a content of natural radio-nuclides (40K, 238U, 226Ra, 232Th) and 137Cs was determined in samples of soil, alfalfa, maize, and moss on six sites in the surroudings of Belgrade. Natural radio-nuclides in the soil were at the level characteristic for Serbia, whereas a relatively high level of activity of 137Cs was determined. On the other hand, in plant samples mostly used as feed (such as alfalfa and maize) the concentration of natural radio-nuclide activity and 137Cs was relatively low, i.e. below the range of detection. The content of natural radio-nuclides in moss was within the standard range of values specific for Serbia. However, the activity level of 137Cs in moss gathered from the wider area around Belgrade, was high, the highest measured level being in the Avala-Zuce area (158-221 Bq/kg). Our results show that this radio-nuclide is still present in the living environment of Belgrade even 20 years after the Chernobyl disaster, and that moss is a good indicator of living environment 137Cs contamination.
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