Natural and Anthropogenic Radioactivity of Feedstuffs, Mosses and Soil in the Belgrade Environment, Serbia
Obradović, Marko O.
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By gamma spectroscopic measurement a content of natural radio-nuclides ((40)K, (238)U, (226)Ra, (232)Th) and (137)Cs was determined in samples of soil, alfalfa, maize and moss on six sites in the surroundings of Belgrade. Natural radio-nuclides in the soil were at the level characteristic for Serbia, whereas a relatively high level of activity of (137)Cs (around 30 Bq kg(-1)) 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 (137)Cs 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 (137)Cs 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(-1)). 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 (137)Cs contamination.
Keywords:Belgrade environment / feedstuffs / mosses / radio-nuclides / soil
Source:Archives of biological sciences, 2010, 62, 2, 301-307
- Ministry of Science and Technology of Serbia