Document Type: Original Paper
Physics Dept., College of Science, Mosul University, Mosul
Physics Department, Faculty of Science, Al-Azher University, Assuit Branch, 71542 Assuit, Egypt
University of Kufa, Faculty of Science,Physics Dept.
University of Kufa, Faculty of Science, Physics Department
Background: Radon (222Rn) concentrations were measured in groundwater samples produced in Qassim area, Saudi Arabia. Materials and Methods: The measurement were done using RAD-7 detector. The measured radon concentrations were used with their ingested dose conversion factors to estimate the annual effective doses for the International Commission on Radiological Protection (ICRP) age groups ≤ 1y (infants), 2 – 17y (children) and ≥ 17y (adults) from consumption of the water samples in present study. Results: The measured radon concentration values varied from 1.20 Bq/l to 15.43 Bq/l with an average of 5.18±0.39 Bq/l. The estimated total annual effective doses due to radon concentrations in drinking water ranged from 6.34 to 81.62 µSv/y for infants, 2.34 to 30.04 µSv/y for children and 3.07 to 39.42 µSv/y for adults and the corresponding average values were found to be 27.41±2.06, 10.08±0.76 and 13.23±0.99 µSv/y, respectively. Conclusion: The total annual effective dose in all samples were considerably exceeded the average worldwide ingestion exposure dose value of 0.1 mSv/y from radon concentrations reported by the United Nations Scientific Committee on Effects of Atomic Radiations (UNSCEAR). Therefore, the Qassim population is advised to consume few amount of these water samples