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Radiat Prot Dosimetry. 2014 Nov;162(1-2):157-62. doi: 10.1093/rpd/ncu250. Epub 2014 Jul 29.

First step of indoor thoron mapping of Kosovo and Metohija.

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Faculty of Natural Sciences, University of Pristina, Lole Ribara 29, Kosovska Mitrovica 38200, Serbia
Institute of Nuclear Sciences 'Vinca', University of Belgrade, P.O. Box 522, Belgrade 11000, Serbia.
Faculty of Natural Sciences, University of Pristina, Lole Ribara 29, Kosovska Mitrovica 38200, Serbia.
Department of Radiation Physics and Chemistry, School of Medicine, Fukushima Medical University, Hikariga-oka 1, Fukushima 960-1295, Japan.
Faculty of Science, University of Kragujevac, Radoja Domanovica 12, Kragujevac 34000, Serbia.
Bundesamt für Strahlenschutz (German Federal Office for Radiation Protection), Köpenicker Allee 120-130, Berlin D-10318, Germany.


The survey of natural radioactivity in Kosovo and Metohija involves 180 indoor (220)Rn measurements. They were performed either in living rooms or in bedrooms of 127 individual, rural type houses, using a passive method with application of CR-39 solid-state nuclear track detectors. Detectors were deployed at a distance of >10 cm from the walls. Values of all 180 measurements for 127 houses give an arithmetic mean (AM) of 132 Bq m(-3). The data for indoor thoron mapping arranged within 10 km × 10 km grid cells give an AM of 118 Bq m(-3) over AM grid cells. The distribution over individual data and the grid cells can be described as normal. About 19 % of the area of Kosovo and Metohija was covered by mapping. This study includes statistical analysis and discussion of factors, such as geogenic and seasonal, which possibly affect thoron concentration, as well as comparison with simultaneous radon measurements.

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