Research Information System
Arabian Journal of Geosciences, vol.13, no.2, 2020 (SCI-Expanded)
An indoor radon activity concentration survey has been carried out at 46 houses in Afyonkarahisar province of Turkey using CR-39 passive nuclear track detectors four times during a 1-year period. The measured values ranged from 21 to 2494 Bq m−3, whereas the calculated average values were in the range of 33.75 and 1614.26 Bq m−3. On the other hand, the calculated annual geometric mean value was 186.50 ± 10.55 Bq m−3 and it was 136.07 ± 8.76 Bq m−3 when only the living areas of the houses considered. The corresponding annual effective dose rates were obtained to be in the range of 0.53 and 25.45 mSv year−1. The resulting annual effective dose equivalent calculated from the geometric mean was 2.94 ± 0.17 mSv year−1 for Afyonkarahisar province, while the annual effective dose in the living areas of the houses was obtained to be 2.15 ± 0.14 mSv year−1. According to the floor levels, the concentration value was found to be between 86.60 ± 7.80 Bq m−3 and 291.80 ± 14.60 Bq m−3. The present results show an exponential decrease with the distance from the soil having the correlation coefficient of R2 = 0.988.