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Tytuł:
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Baseline levels of natural radionuclides concentration in sediments East coastline of North Cyprus.
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Autorzy:
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Abbasi A; Faculty of Engineering, University of Kyrenia, Kyrenia, via Mersin 10, Turkey; Faculty of Engineering, Near East University, Nicosia, via Mersin 10, Turkey. Electronic address: .
Zakaly HMH; Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia; Faculty of Science, Al Azhar University, Assiut, Egypt.
Mirekhtiary F; Faculty of Engineering, Near East University, Nicosia, via Mersin 10, Turkey.
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Źródło:
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Marine pollution bulletin [Mar Pollut Bull] 2020 Dec; Vol. 161 (Pt A), pp. 111793. Date of Electronic Publication: 2020 Nov 06.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: 2003- : Oxford : Elsevier
Original Publication: London, Macmillan.
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MeSH Terms:
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Radiation Monitoring*
Radium*/analysis
Soil Pollutants, Radioactive*/analysis
Cyprus ; Environmental Pollution ; Mediterranean Sea ; Potassium Radioisotopes/analysis ; Radioisotopes/analysis ; Spectrometry, Gamma ; Thorium/analysis
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Contributed Indexing:
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Keywords: Gamma-spectroscopy; Natural radionuclides; Radiological risk; Sediment
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Substance Nomenclature:
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0 (Potassium Radioisotopes)
0 (Radioisotopes)
0 (Soil Pollutants, Radioactive)
60YU5MIG9W (Thorium)
W90AYD6R3Q (Radium)
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Entry Date(s):
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Date Created: 20201109 Date Completed: 20201214 Latest Revision: 20201214
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Update Code:
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20240105
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DOI:
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10.1016/j.marpolbul.2020.111793
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PMID:
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33166852
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In this study, surface sediment samples from the North Cyprus East coast of the Mediterranean Sea were collected to determine the concentrations of three main natural radionuclides ( 226 Ra, 232 Th, and 40 K) using a high-resolution HPGe gamma-spectroscopy system. The activity concentrations of 226 Ra, 232 Th, and 40 K in the selected sediment samples ranged from 11.5 to 31.6, 11.8 to 24.9, and 391.7 to 1014 Bq kg -1 dw (dry weight), respectively. The concentration distribution analysis showed that the kurtosis statistics parameter was negative, and the concentration distribution was less peaked than the normal curve. The mean activity concentrations of 40 K (628.1 Bq kg -1 ) in the sediment samples was higher than the worldwide average (420 Bq kg -1 ) concentration. The radium equivalent activity, external hazard, internal hazard and gamma activity concentration indexes were calculated to assess the pollution and risk level of radionuclides. The radiological risk assessment indicated that observed values were below the threshold values.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
