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VARIATION OF RADON ACTIVITY CONCENTRATION IN SELECTED KINDERGARTENS IN SLOVAKIA
Monika Müllerová1, Karol Holý1, Iveta Smetanová2
1Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina F-1, 841 04 Bratislava, Slovak Republic.
Abstract:
Radon measurements were carried out in four kindergartens in Slovakia. RSKS detectors (Radosys Ltd., Hungary) and RamaRn (SUJCHBO, Czech Republic) were used for integral measurement in indoor air. AlphaGUARD (Saphymo, Germany) and TERA system (Tesla, Czech Republic) were used for continual measurement in indoor air. An annual variation with a maximum during the summer holidays was observed. Daily variation strongly depended on the ventilation of rooms. The average radon activity concentration per unit of time calculated from integral measurements was higher than that calculated for working time only.
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