Radiological characterization of beach sediments along the Alexandria–Rosetta coasts of Egypt

Abdel-Halim, A. A.; Saleh, I.H.

doi:10.1016/j.jtusci.2015.02.016

Cited by 25 publications

(7 citation statements)

References 23 publications

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“…However, this does not apply in the case of K-40 activity concentrations. The average Th/U ratio for bulk samples is similar to that found in coastal sands of western Estonia (Koch, 2006) and varies from 0.55 to 2.36, which is less than the well-known literature value of 2-2.5 (Mahdavi, 1963;Abdel-Halim & Saleh, 2016).…”

Section: Radioactivity Analysissupporting

confidence: 68%

Hazardous radioactivity levels and heavy mineral concentrations in beach sediments of Lake Peipsi, northeastern Estonia

et al. 2018

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The present study discusses results of heavy mineral analyses and radioactivity of beach sediments of Lake Peipsi. Such analyses are commonly done globally, but had not yet been conducted for the fourth largest lake in Europe. The average heavy mineral content in Lake Peipsi beach sediments along the northern and western coast is higher than usual for Estonian coastal and Quaternary sediments. Concomitantly, elevated radioactivity levels have been measured in several places, with the highest concentrations observed at Alajõe (1885.5 Bq/kg), which is over five times more than the recommended limit. The aim of the present study is to find sites with higher radioactivity levels, because the northern coast of Lake Peipsi is a well-known recreational area.

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Section: Radioactivity Analysissupporting

confidence: 68%

Hazardous radioactivity levels and heavy mineral concentrations in beach sediments of Lake Peipsi, northeastern Estonia

et al. 2018

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“…The difference between the sample in the west and the sample in the east could be explained by the presence of black sands deposits, which contain heavy minerals such as monazite. These sands contain, overall, two orders of magnitude more of 232 Th and 238 U decay series radionuclides [19,12]. 40 K results indicated a range from 296.67±25.52Bqkg -1 to 747.72±64.32Bqkg -1 with the average value 518.54± 44.61Bqkg -1 .…”

Section: Activity Concentrations In Coastal Marine Sediment Samplesmentioning

confidence: 95%

“…The uptake of radionuclides by marine sediments depends on EJUA-BA | March 2023 their physical and chemical properties. The radionuclides distribution in marine sediments provides essential information concerning sediments movement and accumulation that provide a strong signal indicating sediment origin [12,13]. Assessing radiation exposure among humans requires a better understanding of the radionuclide's behavior in pertinent environments.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Natural Radioactivity Level and Associated Radiological Hazards in Marine Sediment Samples Collected From Abyan Beach, Gulf of Aden, Yemen

AS-Subaihi

Salem

Ahmed

2023

Electron. J. Univ. Aden Basic Appl. Sci.

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Twenty three marine sediment samples taken from the side beach from the Abyan beach, Aden Gulf, Yemen to measuring the activity concentration of terrestrial radionuclides radium-226, thorium-232 and potassium-40 and its associated hazard indices using gamma spectrometer with High-Purity Germanium HPGe detector. The average activity concentration of natural radionuclides 226Ra, 232Th and 40k in marine sediments samples under investigation were 16.25± 0.63Bqkg-1, for Ra-226, 23.80± 1.46Bqkg-1 for Th-232 and 518.54±44.61Bqkg-1 for K-40 respectively. The radiation hazard indices which resulting from the presence of natural radionuclides in marine sediment samples were calculated and the obtained results indicate that the average value of radium equivalent activity was 90.21Bqkg-1. The average value of External hazard index Hex was 0.243 and the average values of internal hazard index Hin was 0.287. The average value of outdoor absorbed dose rate Dout was 43.66nGyh−1 and indoor absorbed dose rate Din was 83.13nGyh−1. The average values of annual outdoor effective dose AEDout was 0.053mSvy-1and the annual indoor effective dose AEDin was 0.407mSvy-1. The average values of the annual gonadal dose equivalent AGDE were 312.52μSvy-1. While the average values of outdoor excess life-time cancer risk ELCRout was 0.187×10−3 and the indoor excess life-time cancer risk ELCRin was 1.427×10−3. They are less than worldwide limits.

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“…Where Lc is the critical level, below which no signal can be detected, ϭd is the standard deviation and K is the error probability [16].…”

Section: Ld = Lc+ Kiddmentioning

confidence: 99%

Radioactivity Concentrations and Their Radiological Significance in Sediments of Some Communities in Andoni, Rivers State, Nigeria

Ononugbo

Amah²

2019

AJARR

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Quantification of naturally occurring radioactive materials in sediment provides information on geological characteristics, the possibility of petroleum and mineral exploration, radiation hazards to the dwelling populace and so on. The coastal sediment collected from the densely populated coastal area of Andoni, Rivers State Nigeria, were analyzed using a Sodium Iodide activated with thallium γ-ray spectrometer with low background radiation environment. The result showed an inhomogeneous distribution of radionuclides at different sampling points. The activity concentration of 226Ra ranges from 9.82±3.41 to 33.37±3.27 Bqkg-1 with an average value of 22.64 Bqkg-1 and 232Th ranges from BDL to 26.78 Bqkg-1 with the average value of 8.45 Bqkg-1. The activity concentration of 40K was relatively higher than 226Ra and 232Th, ranging from 7.35±3.03 to 75.38±2.75 Bqkg-1 with an average value of 29.01 Bqkg-1. The average mass concentration of 226Ra, 232Th and 40K in the sediments were found to be 2.04 ±0.002, 2.08 ±0.001 ppm and 0.09± 0.003 % respectively. The 232Th/226Ra ratio was found to be within the range of 0.00 to 3.59 with a mean value of 1.02 which is far below the continental crustal average concentration of 3.82. There was also a poor correlation of radionuclides in the sediment showing differences in their origin. The mean values of AGED, D, AEDE, Hex, Raeq, RLI, Iα, AUI and ELCR were below their recommended values. Thus the radioactivity levels in the studied sediments are generally of very little radiological concern for human health.

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Radiological characterization of beach sediments along the Alexandria–Rosetta coasts of Egypt

Cited by 25 publications

References 23 publications

Hazardous radioactivity levels and heavy mineral concentrations in beach sediments of Lake Peipsi, northeastern Estonia

Hazardous radioactivity levels and heavy mineral concentrations in beach sediments of Lake Peipsi, northeastern Estonia

Assessment of Natural Radioactivity Level and Associated Radiological Hazards in Marine Sediment Samples Collected From Abyan Beach, Gulf of Aden, Yemen

Radioactivity Concentrations and Their Radiological Significance in Sediments of Some Communities in Andoni, Rivers State, Nigeria

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