The measurement of gamma-emitting radionuclides in beach sand cores of coastal regions of Ramsar,Iran using HPGe detectors |
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Authors: | Marziyeh Tari Sayyed Ali Moussavi Zarandi Kheirollah Mohammadi Mohammad Reza Zare |
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Institution: | 1. Department of Physics, Faculty of Sciences, Central Tehran Azad University, Tehran, Islamic Republic of Iran;2. Department of Physics and Energy Engineering, University of Amir Kabir, Tehran, Islamic Republic of Iran;3. Department of Physics, Faculty of Sciences, University of Isfahan, Isfahan 81746-73441, Islamic Republic of Iran |
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Abstract: | Radionuclides which present in different beach sands are sources of external exposure that contribute to the total radiation exposure of human. 226Ra, 235U, 232Th, 40K and 137Cs analysis has been carried out in sand samples collected at six depth levels, from eight locations of the northern coast of Iran, Ramsar, using high-resolution gamma-ray spectroscopy. The average Specific activities of natural radionuclides viz., 226Ra, 235U, 232Th, 40K and 137Cs, in the 0–36 cm depth sand were found as: 19.2 ± 0.04, 2.67 ± 0.17, 17.9 ± 0.06, 337.5 ± 0.61 and 3.35 ± 0.12 Bq kg−1, respectively. The effects of organic matter content and pH value of sand samples on the natural radionuclide levels were also investigated. Finally, the measured radionuclide concentrations in the Ramsar beach were compared with the world average values, as reported by UNSCEAR (2000). None of the studied beaches were considered as a radiological risk. |
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Keywords: | Natural radionuclides Gamma-ray spectrometry Radiological risk Specific activities Coastal sands Ramsar |
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