Seasonal and location dependence of indoor and soil radon concentrations in two villages, Najran region, Saudi Arabia
, Al_Ghamdi S. S., . 2014
Seasonal (winter-summer) indoor and soil radon comparison is made in two villages in Najran region,
south west of Saudi Arabia, using CR-39 Dosimeter. Summer indoor radon concentrations were measured
in the villages of Fara Al-Jabal and Hadadah. The respective winter-summer average values of
42 ± 4 Bq m3 and 74 ± 5 Bq m3 are measured in Fara Al-Jable village and the average values of
47 ± 4 Bq m3 and 76 ± 5 Bq m3 are measured in Hadadah village. The respective winter-summer soil
values are 1.40 ± 0.21 kBq m3 and 0.99 ± 0.04 kBq m3 in Fara Al-Jabal village while those measured in
Hadadah village are 2.90 ± 0.17 kBq m3 and 1.40 ± 0.66 kBq m3. Indoor radon levels are found to be
seasonal dependent while that of soil are found seasonal and location dependent. Meteorological and
geological factors are expected to have caused the measured significant differences in radon levels in
dwellings and soil in the two villages.
