Long-term measurements of equilibrium equivalent radon and thoron progeny concentrations in Republic of Srpska dwellings

1. Zoran Ćurguz, Saobraćajni fakultet Doboj, Republic of Srpska, Bosnia and Herzegovina
2. Zdenka Stojanovska, Faculty of Medical Sciences, Goce Delčev University Stip, Macedonia
3. Rosaline Mishra, Radiological Physics and Advisory Division, Bhabha Atomic Research Centre,Mumbai, India, India
4. B.k. Sapra, Radiological Physics and Advisory Division, Bhabha Atomic Research Centre,Mumbai, India, India
5. I. Yarmoshenko, Institute of Industrial Ecology Ural Branch of Russian Academy of Science, Ekaterinburg, Russia, Russian Federation
6. Predrag Kolarž, Institute of Physics, University of Belgrade, Serbia
7. Aco Janicijević, Tehnološko-metalurški fakultet, Univerzitet u Beogradu, Srbija, Serbia
8. Zora S. Zunić, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia

The long–term measurements of radon and thoron equilibrium equivalent concentrations (EERC and EETC) were carried out the first time in Republika Srpska in 25 schools of its capital Banja Luka and in its wider surroundings. After this successful survey the measurements continued using the same type of the LR115 nuclear track detectors, i.e., Direct Radon Progeny Sensors/Direct Thoron Progeny Sensors (DRPS/DTPS), which were deployed in the 36 dwellings nearby the investigated schools. The aim of this study was to give possible scientific contribution considering an explanation of EERC and EETC behavior in indoor environment. The detectors were exposed for one year period at 15–20 cm distance from the walls. The EERC and EETC were found to vary in the range from 6.3 to 14.4 Bqm−3 and from 0.10 to 1.1 Bqm−3, with geometric mean 9.3 and 0.36, respectively. The same variance of EER and EET concentrations, measured in living and bedrooms of buildings built with different construction materials as well at different floors, have been obtained. The insignificant correlations between EERC and EETC, shows that these concentrations appeared to be independent in investigated dwellings. The calculated ratio of EETC to EERC ranged from 0.01 to 0.16 with the geometric mean of 0.04.

Tematska oblast: SIMPOZIJUM A - Nauka materije, kondenzovane materije i fizika čvrstog stanja

Datum: 01.08.2019.

Contemporary Materials 2019 - Savremeni Materijali

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