1. Zoran Ćurguz, Saobraćajni fakultet Doboj,
Republic of Srpska, Bosnia and Herzegovina
2. Dragoljub Mirjanić, Akademija nauka i umjetnosti Republike Srpske, Bana Lazarevića 1, Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Neđo Đurić, Akademija nauka i umjetnosti Republike Srpske, Republic of Srpska, Bosnia and Herzegovina
4. Zora S. Zunić, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
5. Zdenka Stojanovska, Faculty of Medical Sciences, Goce Delcev University, Macedonia
6. Predrag Kolarž, Institute of Physics, University of Belgrade, Serbia
The paper deals with the analysis of the indoor radon concentration results measured in four schools of Trebinje city and taking into consideration their geological background and its characteristics. There have been 13 measurements and the results showed the range of 75 Bq/m3 to 4244 Bq/m3. Some of the indoor radon concentrations were very high, up to 15 times higher than recommended ones reaching the level of 300 Bq/m3.
In each of the four schools there are spots with the high geogenic potential and, 38 % results show a concentration higher than 1100 Bq/m3, which further characterize this area as Radon Priority Area. From the geological point of view, the geological list Trebinje represents a part of Mesozoic and Paleogenic complex which build the outdoor Dinaride part. There are also different varieties of calcium carbonate and dolomite areas with sporadical occurrence of sandstones (pescari) and marlstones (laporci) accumulated at the end of the Paleogene period so that lithological content is pretty simple.
The main part of the terrain is represented by sediments originated from Mesozoic and Paleogenic structures which appear along with greater dislocation in narrow strings.