Radiological Investigation on Sediments: A Case Study of Wadi Rod Elsayalla the Southeastern Desert of Egypt
The presence of heavy radioactive minerals in the studied granitoids from which the Wadi sediments leads to the study of the exposure to emitted gamma rays from the terrestrial radionuclides, such as <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K. The geolo...
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MDPI AG
2021-12-01
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| author | Ahmed E. Abdel Gawad Khaled Ali Hassan Eliwa M. I. Sayyed Mayeen Uddin Khandaker David A. Bradley Hamid Osman Basem H. Elesawy Mohamed Y. Hanfi |
| author_facet | Ahmed E. Abdel Gawad Khaled Ali Hassan Eliwa M. I. Sayyed Mayeen Uddin Khandaker David A. Bradley Hamid Osman Basem H. Elesawy Mohamed Y. Hanfi |
| author_sort | Ahmed E. Abdel Gawad |
| collection | DOAJ |
| description | The presence of heavy radioactive minerals in the studied granitoids from which the Wadi sediments leads to the study of the exposure to emitted gamma rays from the terrestrial radionuclides, such as <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K. The geological study revealed that the Wadi sediments derived from the surrounding granitoids, such as syenogranite, alkali feldspar granite, and quartz syenite. The mineral analysis confirmed that the granitoids were enriched with radioactive minerals, such as uranothorite as well as monazite, zircon, yttrocolumbite, and allanite. The mean activity of the <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K concentrations are 62.2 ± 20.8, 84.2 ± 23.3, and 949.4 ± 172.5 Bq kg<sup>−1</sup>, respectively, for the investigated Wadi sediments, exceeding the reported limit of 33, 45 and 412 Bq kg<sup>−1</sup>, respectively. Public exposure to emitted gamma radiation is detected by estimating many radiological hazard indices, such as the radium equivalent content (Ra<sub>eq</sub>), external and internal hazard indices (H<sub>ex</sub> and H<sub>in</sub>), annual effective dose (AED), annual gonadal dose equivalent (AGDE), and excess lifetime cancer (ELCR). The obtained results of the radiological hazards parameters showed that public exposure to emitted gamma radiation can induce various dangerous health effects. Thus, the application of the investigated sediments in different building materials and infrastructures fields is not safe. A multivariate statistical analysis (MSA) was applied to detect radionuclide correlations with the radiological hazard parameters estimated in the granite samples. |
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| language | English |
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| publishDate | 2021-12-01 |
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| spelling | doaj.art-e6ce96cb948f42aebeea5bbedc4dc2722023-11-23T03:40:08ZengMDPI AGApplied Sciences2076-34172021-12-0111241188410.3390/app112411884Radiological Investigation on Sediments: A Case Study of Wadi Rod Elsayalla the Southeastern Desert of EgyptAhmed E. Abdel Gawad0Khaled Ali1Hassan Eliwa2M. I. Sayyed3Mayeen Uddin Khandaker4David A. Bradley5Hamid Osman6Basem H. Elesawy7Mohamed Y. Hanfi8Nuclear Materials Authority, Maadi, P.O. Box 530, Cairo 11936, EgyptNuclear Materials Authority, Maadi, P.O. Box 530, Cairo 11936, EgyptGeology Department, Faculty of Science, Minufiya University, Shebin ElKom 32511, EgyptDepartment of Nuclear Medicine Research, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi ArabiaCenter for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Selangor, MalaysiaDepartment of Physics, University of Surrey, Guildford GU2 7XH, UKDepartment of Radiologial Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi ArabiaDepartment of Pathology, College of Medicine, Taif University, P.O. Box 11099, Taif 21944, Saudi ArabiaNuclear Materials Authority, Maadi, P.O. Box 530, Cairo 11936, EgyptThe presence of heavy radioactive minerals in the studied granitoids from which the Wadi sediments leads to the study of the exposure to emitted gamma rays from the terrestrial radionuclides, such as <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K. The geological study revealed that the Wadi sediments derived from the surrounding granitoids, such as syenogranite, alkali feldspar granite, and quartz syenite. The mineral analysis confirmed that the granitoids were enriched with radioactive minerals, such as uranothorite as well as monazite, zircon, yttrocolumbite, and allanite. The mean activity of the <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K concentrations are 62.2 ± 20.8, 84.2 ± 23.3, and 949.4 ± 172.5 Bq kg<sup>−1</sup>, respectively, for the investigated Wadi sediments, exceeding the reported limit of 33, 45 and 412 Bq kg<sup>−1</sup>, respectively. Public exposure to emitted gamma radiation is detected by estimating many radiological hazard indices, such as the radium equivalent content (Ra<sub>eq</sub>), external and internal hazard indices (H<sub>ex</sub> and H<sub>in</sub>), annual effective dose (AED), annual gonadal dose equivalent (AGDE), and excess lifetime cancer (ELCR). The obtained results of the radiological hazards parameters showed that public exposure to emitted gamma radiation can induce various dangerous health effects. Thus, the application of the investigated sediments in different building materials and infrastructures fields is not safe. A multivariate statistical analysis (MSA) was applied to detect radionuclide correlations with the radiological hazard parameters estimated in the granite samples.https://www.mdpi.com/2076-3417/11/24/11884Wadi sedimentsheavy mineralsnatural radionuclidesradiological hazard |
| spellingShingle | Ahmed E. Abdel Gawad Khaled Ali Hassan Eliwa M. I. Sayyed Mayeen Uddin Khandaker David A. Bradley Hamid Osman Basem H. Elesawy Mohamed Y. Hanfi Radiological Investigation on Sediments: A Case Study of Wadi Rod Elsayalla the Southeastern Desert of Egypt Applied Sciences Wadi sediments heavy minerals natural radionuclides radiological hazard |
| title | Radiological Investigation on Sediments: A Case Study of Wadi Rod Elsayalla the Southeastern Desert of Egypt |
| title_full | Radiological Investigation on Sediments: A Case Study of Wadi Rod Elsayalla the Southeastern Desert of Egypt |
| title_fullStr | Radiological Investigation on Sediments: A Case Study of Wadi Rod Elsayalla the Southeastern Desert of Egypt |
| title_full_unstemmed | Radiological Investigation on Sediments: A Case Study of Wadi Rod Elsayalla the Southeastern Desert of Egypt |
| title_short | Radiological Investigation on Sediments: A Case Study of Wadi Rod Elsayalla the Southeastern Desert of Egypt |
| title_sort | radiological investigation on sediments a case study of wadi rod elsayalla the southeastern desert of egypt |
| topic | Wadi sediments heavy minerals natural radionuclides radiological hazard |
| url | https://www.mdpi.com/2076-3417/11/24/11884 |
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