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Maxwell O, Adewoyin Olusegun O, Joel ES, Ikechukwu B I, Timothy-Terhile Mary A, Okoro Emeka E, Uchechukwu OA, Adeleye BN, Michael OM, Ifeanyi OA, Ogunrinola IE, Ahuekwe Eze F, Saeed MA. MEASUREMENTS OF SEASONAL VARIATIONS OF RADIOACTIVITY DISTRIBUTIONS IN RIVERINE SOIL SEDIMENT OF ADO-ODO OTA, SOUTH-WEST NIGERIA: PROBABILISTIC APPROACH USING MONTE CARLO. Radiat Prot Dosimetry 2021; 193:76-89. [PMID: 33779760 DOI: 10.1093/rpd/ncab027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/14/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
The radioactivity levels were measured using a hand-held gamma-ray survey meter and NaI (Tl) based gamma spectroscopy to evaluate the seasonal variation of radioactivity levels in the riverine area of Ado-Odo Ota. The measured iso-dose map reported higher gamma dose rate of 79 nGy/h, approximately 34% higher than the world average of 59 nGy/h. The values for U-238, Th-232 and K-40 activity levels ranged between 29.9 and 21.6; 103.2 and 31.2; 802.2 and 233.5 with mean values of 26.1, 55.6 and 499.3 Bq/kg, respectively. According to the mean, 5th and 95th percentiles of the probabilities using the Monte Carlo simulation, the Radium equivalent activities and the absorbed dose rates are within their respective recommended limits of 370 Bq/kg and 84 nGy/h. This study could be used to monitor dose rates and radiological risks for the areas covering the small area (Ado-Odo Ota) to the larger area (West African Region) as baseline data.
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Affiliation(s)
- Omeje Maxwell
- Department of Physics, College of Science and Technology, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria
| | - O Adewoyin Olusegun
- Department of Physics, College of Science and Technology, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria
| | - Emmanuel S Joel
- Department of Physics, College of Science and Technology, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria
| | - Ijeh Ikechukwu B
- Department of Physics, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State, Nigeria
| | - A Timothy-Terhile Mary
- Department of Physics, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State, Nigeria
| | - E Okoro Emeka
- Department of Petroleum Engineering, College of Engineering, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria
| | - Omeje Anne Uchechukwu
- Department of Public and Community Health Care, College of Medicine, Idiaraba, University of Lagos, Nigeria
| | - Bosede Ngozi Adeleye
- Department of Economics and Development Studies, Covenant University, P.M.B. 1023, Ota, Ogun State, Nigeria
| | | | - Oha A Ifeanyi
- Department of Geology, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Iyanuoluwa E Ogunrinola
- Department of Physics, College of Science and Technology, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria
| | - F Ahuekwe Eze
- Department of Biological Sciences, College of Science and Technology, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria
| | - M A Saeed
- Department of Physics, Division of Science and Technology, University of Education, Lahore-Pakistan
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