Assessment of radon gas using passive dosimeter in Amman and Al-Rusaifa cities, Jordan

Background: Radon concentra on was measured in the soil and indoor of Amman and AlRusaifa ci es in Jordan during summer season. Materials and Methods: The measurement was performed using me-integrated passive radon dosimeters, containing a solid state nuclear track plas c detector, commercially known as CR-39. Results: Radon concentra on levels in the soil ranged from 2.8 ± 1.2 to 6.9 ± 1.5 (kBq/m 3 ) with an average 4.0 ± 1.6 (kBq/ m 3 ) in Amman and from and 6.5± 1.1 to 22.4 ± 5.2 kBq/m 3 in AlRusaifa with average 14.2 ± 2.5 (kBq/m 3 ). The average indoor radon concentra on in the first floor in Amman was 44.8± 5.3 (Bq/m 3 ); while the average concentra on in AlRusaifa, in the first floor, was 187± 16.35 (Bq/m 3 ). In AlRusaifa, our results in the ground floor and the first floor were about 11% 26 % higher than the reported values, while this ra o reaches to 56% of the soil. Conclusion: The average indoor radon concentra on indoor in Al-Rusaifa exceeds the ac on radon level recommend by WHO (100 Bq/m 3 ). The poten al health impact in this city is considered high. High radon level in AlRusaifa may be due to the phosphate content in its soil. A correla on between the radon concentra on in the soil and indoor was observed.