The Effect of Soil Radioactivity in Pollution

Introduction: The purpose of this article is to determine the contribution of absorbed dose rate, Radium equivalent activity, external hazard index, annual gonad dose equivalent and annual effective dose equivalent of soil in soil pollution. Materials and Methods: The soil was chosen as a site for studying radiation doses. Soil samples were collected from twelve and thirteen sites in western and eastern sites respectively in the region and then dried. Then After that, the soil samples from twelve and thirteen sites in east and west were mixed separately to make one big group of soil sample. The measurement of Radionuclide concentration in soil samples was made by gamma spectrometer. Results: The natural radioactivity doses of soil in the studied samples resulted in 42.92 ±4.03 nGy h-1 (average absorbed dose rate), 86.79±8.26 Raeq per Bqkg-1 (radium equivalent activity), 8231.86±327.76 (the external hazard index), and 322.9±31.6 ISvh-1 (the annual gonad dose equivalent) and193.15ISvh-1 (the annual effective dose equivalent). The results of the study were also compared with the international recommended values and radioactivity measurements in soils of different countries. Conclusion: The contribution of natural radioactivity in the area was low, in comparison with ICRP was low.