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Estimation of Residents Exposure Risks to Radiological Parameters in Some Building Materials in Nigeri

Adewoyin, O.O and Omeje, Maxwell and Akinwumi, S. A. and Zaidi, Embong and Ogundiran, Funso A. (2022) Estimation of Residents Exposure Risks to Radiological Parameters in Some Building Materials in Nigeri. In: 3rd International Conference on Energy and Sustainable Environment, 2022, Online.

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Some of the brands of tiles commonly available in the markets in Nigeria, which are used for building purposes, were analysed in order to estimate the concentration of naturally occurring radionuclides. The analysis was done with the aid of High-Purity Germanium (HPGe) detector. The results revealed that the average activity concentrations in the sample of tiles, cement and sand varied from 41 ± 4 to 96 ± 8.3, 27 ± 9.5 to 76.5 ± 2.5 and 140 ± 7.9 to 940 ± 19.2 Bqkg-1 for 232Th, 226Ra and 40K, respectively. The results obtained were used to determine the impact of these building materials on users. The radium equivalent activity (Raeq) ranged between 125 – 280 Bqkg-1 and were observed to be lower than 370 Bqkg-1 in all the samples tested, which is the recommended safe limit. Similarly, the absorbed dose rates were noted to vary from 51.00 – 122.52 nGyh-1. However, one of the samples examined showed a result of 122.52 nGyh- for the indoor absorbed dose rate (DR), which is higher than the internationally recommended safe value of 80 nGyh-1according to USEPA. The results revealed that the building materials investigated do not pose any danger to the end users.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: HPGe, Radium equivalent, Absorbed dose rate, Safe limit, Building materials
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
T Technology > TH Building construction
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Patricia Nwokealisi
Date Deposited: 16 May 2024 12:26
Last Modified: 16 May 2024 12:26

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