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Assessment of natural radionuclides and its radiological hazards from tiles made in Nigeria

Joel, E. S. and Omeje, Maxwell and Adewoyin, O.O and Ehi-Eromosele, C. O. and Embong, Z. and Saeed, M. A. (2018) Assessment of natural radionuclides and its radiological hazards from tiles made in Nigeria. Radiation Physics and Chemistry, 144. pp. 43-47.

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Abstract

Activity concentration of 10 different brands of tiles made in Nigeria were analyzed using High purity Germanium gamma detector and its hazard indices such as absorbed dose rate, radium equivalent activity, external Hazard Index (Hex), internal Hazard Index (Hin), Annual Effective Dose (mSv/y), Gamma activity Index (Iγ) and Alpha Index (Iα) were determined. The result showed that the average activity concentrations of radionuclides (226Ra, 232Th and 40K) content are within the recommended limit. The average radium equivalent is within the recommended limit of 370 Bq/kg. The result obtained further showed that the mean values for the absorbed dose rate (D), external and internal hazard index, the annual effective dose (AEDR) equivalent, gamma activity index and Alpha Index were: 169.22 nGyh−1, 0.95 and 1.14, 1.59 mSv/y, 1.00 Sv yr−1 and 0.34 respectively. The result established that radiological hazards such as absorbed dose rate, internal hazard, annual effective dose rate, gamma activity index and Alpha Index for some samples are found to be slightly close or above international recommended values. The result for the present study was compared with tiles sample from others countries, it was observed that the concentration of tiles made in Nigeria and other countries are closer, however recommends proper radiation monitoring for some tiles made in Nigeria before usage due to the long term health effect.

Item Type: Article
Uncontrolled Keywords: Radioactivity concentrations Radiological hazards Tiles
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 23 Apr 2018 15:40
Last Modified: 23 Apr 2018 15:40
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/10664

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