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Natural Radioactivity Assessment and Radiological Hazards in Soils from Qarun Lake and Wadi El Rayan in faiyum, Egypt

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Open Journal of Soil Science 2013年第7期3卷 289-296页

作者： Saher M. Darwish Samia M. El-Bahi Amany T. Sroor najat.f. arhoma Nuclear Physics Laboratory Ain Shams University Fac- ulty of Girls Heliopolis Cairo Egypt. Physics Department Faculty of Science Cairo University Giza Egypt Physics Department Faculty of Science Cairo University Giza Egypt

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.

关键词： Natural Radioactivity Radiological Hazards HPGe Detector Gamma-Ray Spectrometry

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XRf Analysis of Heavy Metals for Surface Soil of Qarun Lake and Wadi El Rayan in faiyum, Egypt

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Open Journal of Metal 2013年第2期3卷 21-25页

作者： Samia M. El-Bahi Amany T. Sroor najat.f. arhoma Saher M. Darwish Nuclear Physics Laboratory Faculty of Girls Ain Shams University Heliopolis Egypt Physics Department Faculty of Science Cairo University Giza Egypt

The environmental pollution with some heavy metals for twenty four surface soil samples collected from Qarun Lake and Wadi El Rayan region in faiyum, Egypt utilizing X-ray fluorescence (XRf) spectroscopy was measured. The concentrations of 13 elements Cr, Ni, Cu, Zn, Zr, Rb, Y, Ba, Pb, Sr, Ga, V and Nb were determined. The elemental concentrations were compared with the normal values and other studies in different locations from the world. The correlation between elements appears that pollution inside the investigated lake and Wadi result from different sources of contamination present inside them. The results establish a database reference of radioactivity background levels around these regions.

关键词： XRf Heavy Metals Surface Soil faiyum

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