Constantin COSMA¹, Alexandra CUCOŞ (DINU)¹, Botond PAPP^1,*, Robert BEGY1,2, Alida GABOR^1,2, Nicoleta BICAN-BRIŞAN² & Lucian BEŞUŢIU^3
1Environmental Radioactivity and Nuclear Dating Center, Babeş-Bolyai University, Cluj-Napoca, Romania
^* E-mail: papp.botond@ubbcluj.ro
²Faculty of Environmental Science and Engeneering, Babeş-Bolyai University, Cluj-Napoca, Romania
³Institute of Geodynamics of the Romanian Academy, Bucharest, Romania

RADON IMPLICATION IN LIFE AND EARTH SCIENCE: BĂIŢA-ŞTEI AREA AND PECENEAGA-CAMENA FAULT (ROMANIA)

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Radon contribute in average with about 50% at the natural irradiation of people in the whole word and it is considered as responsible for a part of lung cancer death, being proved the second main cause for this illness after smoking. In other case, high soil radon anomalies are connected with the presence of tectonic faults or fissures and earthquakes. This work presents some methodological aspects of radon measurements, for indoor air and soil environment. The first part presents preliminary indoor radon exposure in Transilvania (Romania), in particular for Ştei-Băiţa radon-prone area, where special aspects were observed. Indoor radon survey shows that the annual mean for Ştei-Băiţa area (247 Bq⋅m^-3) is two times higher than the average value for Transilvania (124 Bq⋅m^-3). The second part presents preliminary results of soil radon measurements, in connection with the localisation and identification the direction of Peceneaga-Camena active fault. Measurement results were reproducible and have good representations, which indicated the existence and the presumed position of the fault zone orientated NW-SE. Measurement results were in the range from several to tens of kBq⋅m^-3, having distributions with maximum values up to 30 kBq⋅m^-3, obtained in immediate proximity of the fault.