Affiliation:
1. Institute for Application of Nuclear Energy INEP, Belgrade
2. Faculty of Veterinary Medicine, Belgrade
3. Faculty for Applied Ecology Futura, Singidunum University, Belgrade
Abstract
The paper presents the results of radionuclides determination in moss
(Homolothecium sp., Hypnum Cupressiforme sp., and Brachythecium sp.) and
lichen (Cladonia sp.) sampled in the region of Eastern Serbia during
1996-2010. The activities in moss are in the range of 100-500 Bq/kg d. w. for
40K, and 5-50 Bq/kg d. w. for 226Ra and 232Th, while the ?soil-to-moss?
transfer factors are 0.45 for 40K, 3 for 226Ra, and 0.3 for 232Th. The
spatial distribution of the 137Cs activities is highly non-uniform; some
values reach 500 Bq/kg d. w., with less than 10% of the samples, mainly the
ones taken prior to 2000, with the activity above 1000 Bq/kg d. w. The
variations in the content of natural radionuclides among the moss species are
not significant. The frequency pattern of the activities of natural
radionuclides in lichen is similar to the one in moss, but the activities in
lichen are to some extent lower. The mean activity of 137Cs in lichen is
below 400 Bq/kg d. w. The mean activities of 7Be in moss and lichen sampled
in 2006 and 2008 are in the range of 41-122 Bq/kg d. w., with pronounced
variations between the sampling sites.
Publisher
National Library of Serbia
Subject
Safety, Risk, Reliability and Quality,Nuclear Energy and Engineering
Cited by
12 articles.
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