Distributions and Risk Assessment of the Natural Radionuclides in the Soil of Shoubra El Kheima, South Nile Delta, Egypt

Osman, Randa M.; Dawood, Yehia H.; Melegy, Ahmed; EL-Bady, Mohamed S.M.; Saleh, A.; Gad, Ahmed

doi:10.3390/atmos13010098

Cited by 25 publications

(7 citation statements)

References 43 publications

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“…Naturally occurring radionuclides such as Uranium-238 ( 238 U), Thorium-232 ( 232 Th), and Potassium-40 ( 40 K) are abundant in the Earth's continental crust [4,5]. These radionuclides can be found in different environmental components, including rocks, soil, stream sediment, groundwater, surface water, marine sediment and water, and biota [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Radiation Hazard from Natural Radioactivity in the Marine Sediment of Jeddah Coast, Red Sea, Saudi Arabia

Al-Mur

Gad

2022

JMSE

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Marine sediment samples were collected along the Jeddah coast, Red Sea, Saudi Arabia, in order to assess radiation hazards and the exposure to human and marine living organisms. Using collaborative techniques, grain size, mineralogical characteristics, and natural radioactivity were investigated. To examine the influence of sediment characteristics over the distribution of the measured radionuclides, resulting data were statistically processed by using multivariate analyses. 238U, 232Th, and 40K levels were specified to be 19.50, 9.38, and 403.31 Bq kg−1, respectively. Radionuclides distributions were affected by sediment mud content, organic matter, and heavy minerals index. The calculated radiation risk parameters are within the safe range and lower than the global average. Natural radiation from these marine sediments is normal and poses no significant radiological risk to the public or marine living organisms. The natural radioactivity of the marine sediment in this Jeddah coastline will have to be monitored on a regular basis to avoid overexposure to the residents.

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Section: Introductionmentioning

confidence: 99%

Radiation Hazard from Natural Radioactivity in the Marine Sediment of Jeddah Coast, Red Sea, Saudi Arabia

Al-Mur

Gad

2022

JMSE

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“…This single radiological index provides a comprehensive measure of the significant activity concentration in a sample with inhomogeneous activity concentrations of these radionuclides. The mathematical expression for radium equivalent (Raeq) is given as [17,18]: Raeq (Bq/kg) = AU + 1.43 ATh + 0.077 AK (2) Here, AU, ATh, and AK represent the activity concentrations of the corresponding radionuclides 238 U, 232 Th…”

Section: Radiological Indices 51 Radium Equivalent (Raeq)mentioning

confidence: 99%

“…This assessment accounted for the presence of natural radionuclides 238 U, 232 Th, and 40 K, which are sparsely distributed in the soil. The calculation process for this risk evaluation is outlined as follows [18][19][20]: (Dout) (nGy/h) = 0.462ARa + 0.621ATh + 0.0417AK (3) where ARa represents the activity concentration of 238 U, ATh represents the activity concentration of 232 Th and AK represents the activity concentration of 40 K.…”

Section: The Absorbed Dose Rates (Dout)mentioning

confidence: 99%

Assessment of Natural Radionuclide Concentrations (238U, 232Th, and 40K) in Soil Samples from Different Locations in Sohag Governorate, Egypt

El-Zohry,

El-Zayat,

Hassaneen

et al. 2024

Sohag Journal of Sciences

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The inherent levels of radioactivity present in the environment of uranium ( 238 U), thorium ( 232 Th), and potassium ( 40 K) along with radium equivalent, absorbed dose rates, and annual effective dose equivalent were analyzed in soil samples collected from various locations within Sohag Governorate, Egypt using an N-type HPGe coaxial detector with a relative efficiency of 40% and an energy resolution of 2.0 KeV at 1.33 MeV photons of 60 Co. The activity concentrations of 238 U, 232 Th and 40 K ranged from 9.23±0.69 Bq/kg to 20.17±1.48 Bq/kg, 12.69±0.73 Bq/kg to 23.76±1.62 Bq/kg and 178.80±3.74 Bq/kg to 373.90±7.27 Bq/kg, respectively, with an approximate mean of 16.22±1.21 Bq/kg, 18.71±1.18 Bq/kg and 311.28±5.71 Bq/kg. The calculated radium equivalent values varied from 41.14 Bq/kg to 79.23 Bq/kg with an approximate mean of 66.94 Bq/kg. Absorbed dose rates caused by γ-ray ranged from 19.60 to 37.98 nGy/h, with an approximate mean of 32.09 nGy/h. Furthermore, the annual effective dose equivalent values ranged from 0.02 mSv/year to 0.05 mSv/year, with an approximate mean of 0.04 mSv/year. These findings provide valuable insights into the levels of natural radionuclides and radiation exposure in Sohag Governorate, Egypt. The results demonstrate compliance with international safety guidelines, signifying a diminished potential for radiation hazards among the inhabitants residing in the area. The study contributes to the overall understanding of environmental radioactivity and serves as a valuable reference for future assessments and radiological protection measures.

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“…On the other hand, primordial radionuclide, such as 238 U, 232 Th, 40 K, and their daughters naturally exist in the earth from its beginning and they have a long half-life period (Kasumović et al, 2018). They are not uniformly distributed in soils and vary significantly in various geography and geological formations (Osman et al, 2022;Wallova et al, 2010). However, both types of radiation are the main contributors to environmental background radiation.…”

Section: Introductionmentioning

confidence: 99%

An Exposure to Natural Background Radiation in Eastern Nepal

Shrestha,

Limbu,

Baral

et al. 2023

Damak Campus J.

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Monitoring natural background radiation is important to locate the high background area. The objective of the work is to find the average background radiation in the Morang district and to observe the effects of cosmic radiation at high altitudes. In this study, background radiation was measured in 17 different municipalities of Morang with the help of a GM counter of model GMC-300E plus. The result showed that the annual effective dose of Morang was 0.24±0.02mSv/y and was below the recommended value of 1 mSv/y set by ICRP for public health. The radiation level was slightly higher in the hospital area. The frequency distribution indicates that there is a good fit of observed data with a known Gaussian distribution. The variation of background radiation with an altitude from 381 to 2550m showed an increasing trend. The best-fitted line depicted that background radiation increased by 16% with 1000m in altitude and it was slightly higher than the literature’s result of 10-12%. The comparative study of the present work showed that the effective dose was the least value in the Morang (0.24mSv/y) and the highest in the Pokhara Valley (0.81mSv/yr).

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Distributions and Risk Assessment of the Natural Radionuclides in the Soil of Shoubra El Kheima, South Nile Delta, Egypt

Cited by 25 publications

References 43 publications

Radiation Hazard from Natural Radioactivity in the Marine Sediment of Jeddah Coast, Red Sea, Saudi Arabia

Radiation Hazard from Natural Radioactivity in the Marine Sediment of Jeddah Coast, Red Sea, Saudi Arabia

Assessment of Natural Radionuclide Concentrations (238U, 232Th, and 40K) in Soil Samples from Different Locations in Sohag Governorate, Egypt

An Exposure to Natural Background Radiation in Eastern Nepal

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