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| Studying of Risk Factors for Selected Samples from Dulmaj Marsh in Wasit, Iraq |
Heiyam Najy Hady, Zahrah Madhat Rifaaht
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Abstract:
In this study, the concentration of the natural radioactive elements, potassium 40K, uranium 238U and thorium 232Th, as well as the calculation of radium equivalent values Raeq, external (Hex), internal (Hin) risk factors and level index (I?) have been measured in 40 soil samples randomly distributed on the Al Dulmaj marsh, which is located in the South-West of Wasit province and North-East of Diwaniyah province using NaI (Tl) (3''x3'') detector. The results show that the radio activity of 40K ranged between (87.44-705.86) Bq kg-1 with an average 344.12 Bq kg-1, 238U ranged between (1.24-35.65) Bq kg-1 with an average 13.94 Bq kg-1, 232Th ranged between (2.6-16.97) Bq kg-1 with an average 9.43 Bq kg-1. Radium equivalent values Raeq ranged between (25.01-87.85) Bq kg-1 with an average 56.72 Bq kg-1, external radiation hazard (Hex) ranged between (0.067-0.23) with an average (0.153), Internal radiation hazard (Hin) ranged between (0.095-0.13) with an average 0.19 and activity index (I?) ranged between (0.18-0.70) with an average (0.44), representatively. The results were found to be comparable or lower than similar global reporting data in EPA and UNSCEAR. According to this result, research soil the area can be considered to have a normal level of natural background radiation.
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