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Radiological Hazards Resulting from Natural Radioactivity in Sediments at Ras Gharib Coast, Red Sea, Egypt |
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PP: 17-27 |
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Author(s) |
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Hesham M. Zakaly,
M. A. M. Uosif,
Madkour.Hashim,
Shams.issa,
Mahmoud tamam,
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Abstract |
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| Natural 226Ra, 232Th and 40K radionuclides concentration in beach Sediments along Ras Gharib coast of Red sea, Egypt has been measured by NaI (Tl) gamma spectrometry. The total average concentrations of radionuclides 226Ra, 232Th and 40K are 28±1.9, 23.9±2.8, and 381.4±21.4 Bqkg-1, respectively. The total average absorbed dose rate is found to be 34 nGyh-1, while, the annual effective dose rate has an average value of 42 μSvy-1. In some locations, the concentration for the investigated heavy metals exceeds the permissible limits recommended by the Canadian Environmental Quality Guidelines, this indicated that the degree of metals pollution is caused by anthropogenic activities (Terrigenous sediments transported to marine environment by some wadis in General Beach area, oil spills as a result of exploration and extraction in General Company of Petroleum) and or by natural impacts like in El-Sakala area |
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