Abstract
The activity concentrations of naturally occurring 238U, 232Th and 40K in surface soils along Qarun Lake and Wadi El Rayan located in Faiyum, Egypt were determined. The measurements were carried out through gamma-ray spectrometry using a coaxial HPGe detector. The results were compared with those reported in the literature. The radiological hazard radium-equivalent activity index, external and internal indices, radioactivity level index, absorbed dose rate, annual effective dose rate and total absorbed dose rate associated with radioactivity in all samples were evaluated and compared with recommended values. Correlation studies between pairs of radionuclides were performed and discussed.
Highlights
Natural environmental radioactivity and the associated external exposure due to gamma radiation depend primarily on the geological and geographical conditions, and appear at different levels in the soils of each region in the world [1,2,3,4]
The aim of this study is to assess the environmental natural radioactivity level in surface soils collected from Qarun Lake and Wadi El Rayan region located in Faiyum, Egypt using a coaxial hyper pure germanium (HPGe) detector in a low background configuration through gamma-ray spectrometry technique
It is apparent that the activity concentrations for soil samples of Qarun Lake are ranged from 9.87 to 27.28 Bq/kg, 9.35 to 26.67 Bq/kg and 958.32 to 3306.39 Bq/kg, with mean values 15.92 Bq/kg, 15.22 Bq/kg and 1644.66 Bq/kg for 238U, 232Th and 40K respectively
Summary
Natural environmental radioactivity and the associated external exposure due to gamma radiation depend primarily on the geological and geographical conditions, and appear at different levels in the soils of each region in the world [1,2,3,4]. The aim of this study is to assess the environmental natural radioactivity level in surface soils collected from Qarun Lake and Wadi El Rayan region located in Faiyum, Egypt using a coaxial HPGe detector in a low background configuration through gamma-ray spectrometry technique. This area falls within the agricultural, industrial and urban communities and tourist area which makes this study worthy. It aims to establish a data baseline to the radioactivity study for the area under investigation that has not been investigated before
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