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Natural Radioactivity and Radiological Hazards of Sharm El Loul Beach, South of Marsa Alam City, Egypt |
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PP: 269-275 |
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doi:10.18576/jrna/060312
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Author(s) |
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Mahmoud M. A. M,
Abd El-Halim E. S,
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Abstract |
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| The natural radionuclides of 238U, 232Th, 226Ra, and 40K have beeninvestigated in sand samples collected from Sharm El Loul beach using gamma-ray spectrometry by a High Purity Germanium (HPGe) detector. The detector was connected with a computer based high resolution multi-channel analyzer. The radioactive activities in the surface studied samples (Es) are ranged from 13.456 to 22.45 Bq/kg for 238U; 2.0449 to 16.245 Bq/kg for 232Th; 43.776 to 79.197 Bq/kg for 226Ra and 162. 302 to 416.111 Bq/kg for 40K with the average values of 17.531, 8.888, 63.265 and 342.289 Bq/kg, respectively. While at the deep studied sample (Eb), they are ranged from 10.888 to 20.714 Bq/kg for 238U; 4.427 to 16.347 Bq/kg for 232Th; 47.163 to 68.373 Bq/kg for 226Ra and 252.568 to 402.706 Bq/kg for 40K with the average values of 15.415, 10.034, 58.174 and 345.636 Bq/kg, respectively. The radium equivalent activity (Raeq), external hazard indices (Hex) have average values of 161.93 Bq/kg, and 0.437, respectively. The average values of indoor and outdoor absorbed dose rate in air were found 70.58 nGy.h-1 and 0.086 nGy.h-1, respectively. The reordered important minerals in the studied area are; feldspar, quartz, Ilmenite, Rutile, Magnetite, zircon, monazite, Uranothorite, and Apatite. In the present work, 40K was the significant radionuclide detected in Sharm El loul beach. The concentrations of radionuclides in the studied samples of Sharm El loul beach during the present investigations were normal and do not produce any harmful health effects to the local residents. |
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