Distribution of Radon Concentration in Agricultural Soil Samples in AL-Qadisiyah, Iraq

Authors

  • Khadija J.Zebalah, Murtadha Sh. Aswood, Ansam F. Showard

Abstract

In this study, radon concentration, radon exhalation rates and the annual effective dose were measured in 55 samples collected from the soil in AL- Qadisiyah Governorate, Iraq by nuclear track detector (CR-39). The results showed the maximum concentration of radon is 323.95 ± 62.87 Bq/m3 and the minimum concentration of radon is 83.14 ± 8.60 Bq/m3, with a mean value of 178.05 ± 36.52 Bq/m3. Results reveal that the exhalation radon mass μBq/(kg.h) ranged from 0.740 to 2.882, and the exhalation radon surface ranged mBq/(m2.h) from 0.021 to 0.083. Furthermore, for the annual effective dose mSv/y ranged from 0.524 to 2.007, with average values of 1.584, 0.046, and 1.121, respectively. The results showed that all radon concentrations for soil samples were lower than 200 Bq/m3 which is one of the lowest ones that it is recommended by UNSCEAR, excluding some of samples that were slightly larger than this limit, but they were lower than the level of 600 Bq/m3, which is the highest value in the range of reference levels recommended by UNSCEAR. While, values of radon exhalation rate in terms of mass and area were much less than the recommended limit world average of 20 mBq/(kg. h) (72Bq/(kg. h)) and 0.016 Bq/(m2.s) (57.6 Bq/(m2. h)), respectively. On the other hand, the results observed that the average effective dose value is below the recommended action level by ICRP in 1993 which is (3-10mSv/y) and higher than reference levels the recommended global average of 1mSv/y by ICRP in 2007, so, according to the results of the area under study it not pose a significant risk to human beings.

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Published

2022-11-15

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How to Cite

Distribution of Radon Concentration in Agricultural Soil Samples in AL-Qadisiyah, Iraq. (2022). Journal of Pharmaceutical Negative Results, 13(4), 1251-1258. https://pnrjournal.com/index.php/home/article/view/3441