Assessment of radon radiological hazards in some ophiolite rocks, North Eastern Desert, Egypt

Salaheldin, Ghada

doi:10.1007/s10967-021-07660-9

Cited by 9 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Salaheldin et al (2020a, b) studied radon exposure in the Neoproterozoic rocks of Wadi Um Huytat in the Central-Eastern Desert of Egypt, where the average concentration of 222 Rn and the radon exhalation rate were higher than the world recommended values. Those studies showed positive evidence for higher levels of radon from other areas in Egypt (Salaheldin 2021(Salaheldin , 2020, confirming the radon health risks to miners who breathed radon for a period of years.…”

Section: Resultsmentioning

confidence: 65%

“…Two studies showed definitive evidence for higher levels of radon from other areas in Egypt (Salaheldin 2021(Salaheldin , 2020. Salaheldin (2021) reported Radon concentration in Abu El-Hassan area in the northeastern part of Egypt, where the values are higher than the global recommended. The average 222 Rn concentration was 10,900 ± 3480 Bq m −3 .…”

Section: Resultsmentioning

confidence: 99%

“…where C Rn , radon concentration measured at time t (Bq m −3 ); t, the accumulation time of the released radon from a sample; and C eq , radon concentration equilibrium (Bq m −3 ) (Hassan 2014;Salaheldin 2021).…”

Section: Activity Concentrationmentioning

confidence: 99%

“…The annual effective dose equivalent calculated from the concentration of radon using UNSCEAR recommended conversion factor of 9 nSv (Bq h m −3 ) −1 (UNSCEAR 2000). Assuming 7000 h year −1 indoors and an equilibrium coefficient of 0.4 indoors (Salaheldin 2021), the effective dose for radon exposure during 1 year is calculated from Eq. ( 5) (Hassan et al 2011):…”

Section: Radiological Parameter Estimationmentioning

confidence: 99%

See 3 more Smart Citations

Radon concentration and exhalation rate for granitic rocks, Central Eastern Desert, Egypt

Salaheldin

El-Haddad²,

Sidique³

2022

Arab J Geosci

Self Cite

View full text Add to dashboard Cite

The present work deals with radon pollution arising from granitic rocks using an Alpha Guard radon monitor. Forty-four granitic samples were collected from five sites located in the Central part of the Eastern Desert of Egypt. The minimum to maximum concentration of radon for the rocks of Gebel (mountain) El-Missikat MS, El-Gidamy GD, RieEl-Garra RG, El-Aradiya AR, and Kab-Amira KA were 49,597 ± 8773 to 236,029 ± 22,397 Bq m−3, 39,658 ± 8341 to 188,666 ± 20,545 Bq m−3, 39,854 ± 7645 to 91,393 ± 13,429 Bq m−3, 45,951 ± 9488 to 121,935 ± 14,869 Bq m−3, and 33,209 ± 6989 to 251,398 ± 25,759 Bq m−3, respectively. The surface and mass exhalation rates, the emanation coefficient, and annual effective dose (indoors) were calculated for all the studied samples. The average value of radon concentration in the collected samples was higher than the national reference level of 300 Bq m−3 recommended by ICRP corresponding to an annual effective dose of 4 mSv at work and 14 mSv at home. The measured values for the rock samples studied in the five sites surpassed the world average of soil in areas with normal levels of radioactivity. The MS granitic samples showed a potential radiological risk for human beings, therefore, it is important to carry out a detailed monitoring program for dose assessment.

show abstract

Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Section: Activity Concentrationmentioning

confidence: 99%

Section: Radiological Parameter Estimationmentioning

confidence: 99%

See 2 more Smart Citations

Radon concentration and exhalation rate for granitic rocks, Central Eastern Desert, Egypt

Salaheldin

El-Haddad²,

Sidique³

2022

Arab J Geosci

Self Cite

View full text Add to dashboard Cite

show abstract

“…The natural radioactivity of building materials is typically determined by assessing the concentrations of 226 Ra, 232 Th, and 40 K, it is worth noting that the activity of 226 Ra or any of its decay products represents approximately 98.5% of the total activity of uranium-238 (238U). Rocks' accessory minerals have the capability to produce significant quantities of radon gas in the atmosphere [5].…”

Section: Introductionmentioning

confidence: 99%

Natural Radionuclides Concentrations and Associated Radiation Hazard of Some Building Rocks Used in Taiz City, Yemen

Dahesh,

El-Kameesy,

Al-Abyad

et al. 2024

UST J Eng Tech

View full text Add to dashboard Cite

Building materials comprise a diverse range of natural rocks that contain varying mineral components including radionuclides. Gamma spectrometry-based high-purity Germanium detectors were utilized to measure the activity concentrations of natural radionuclides: Radium-226 (226Ra), Thorium-232 (232Th), and Potassium-40 (40K) in various building rock samples found within and surrounding Taiz city. The activity concentrations of 226Ra, 232Th, and 40K vary from 27.79 ± 0.77 to 234.49 ± 3.13 Bq.kg-1, 25.82 ± 0.40 to 415.31 ± 2.47 Bq.kg-1, and 457.91±2.61 to 1139.56 ± 5.43 Bq.kg-1 with overall average value of 71.55 Bq.kg-1, 93.87 Bq.kg-1, 966.88 Bq.kg-1 respectively, these values were higher than the permissible thresholds. Furthermore, several radiation hazard indices were estimated including the radium equivalent (Raeq), the external hazard index (Hex), the internal hazard index (Hin), the gamma level index (Iɤ), the dose rate(Dɤ), the annual effective dose equivalent (AEDE), the excess lifetime cancer risk (ELCR), and the annual gonadal dose equivalent (AGDE). The findings illustrated that Basalt rocks have the minimum values of radiation hazard indices while the Himatite rocks have the maximum values of radiation hazard. The average values of radiation risks for most of building rocks fall below the recommended limits for safety. Based on the Radiation hazard indices of building rock samples, it can be concluded that with the exception of hematite rocks, all the examined rocks are considered safe for use in construction materials and pose non-significant radiation risks. The awareness about natural radioactivity levels of building rocks is critical for planning and performing strategies in radiation safety of buildings.

show abstract

Effect of moisture content on the 222Rn mass exhalation rates for different grain-size samples of red brick and cement mortar used in Qena city, Egypt

Din

Saad

2022

J Radioanal Nucl Chem

View full text Add to dashboard Cite

Assessment of radon radiological hazards in some ophiolite rocks, North Eastern Desert, Egypt

Cited by 9 publications

References 10 publications

Radon concentration and exhalation rate for granitic rocks, Central Eastern Desert, Egypt

Radon concentration and exhalation rate for granitic rocks, Central Eastern Desert, Egypt

Natural Radionuclides Concentrations and Associated Radiation Hazard of Some Building Rocks Used in Taiz City, Yemen

Effect of moisture content on the 222Rn mass exhalation rates for different grain-size samples of red brick and cement mortar used in Qena city, Egypt

Contact Info

Product

Resources

About