ESTIMATION OF RADIOLOGICAL HEALTH RISKS DUE TO INDOOR AND OUTDOOR HUMAN EXPOSURE TO IONIZING RADIATION IN BRICK HOUSES IN OGBIA, BAYELSA STATE, NIGERIA
Keywords:
Background Ionizing Radiation, Excess Life Cancer Risk, Dose Rate, Annual Effective Dose Equivalent, Outdoor, Dose to various body organsAbstract
The study presents the indoor and outdoor background ionizing radiation conducted within the brick houses in Ogbia, Bayelsa State to ascertain the baseline radiation levels of the area. The measurement was carried out using a portable and well calibrated Radiation Alert Monitor -200 and Global Positioning System (GPS). A total of 144 background counts were randomly collected in 18 locations of indoor and outdoor. The obtained radiation dose rate was used to compute the radiological health hazards and annual effective dose to various body organs using an established model. The average results of the dose rate (indoor and outdoor), annual effective dose equivalent (indoor and outdoor) and excess lifetime cancer risk (indoor and outdoor) are 0.18 ±0.01 μSv/h and 0.114 ± 0.04 μSv/h; 1.261 ±0.02 mSv/y and 0.193±0.01 mSv/y; and 3.154 ±0.03 × 10-3 and 0.482±0.02 ×10-3 respectively. The annual effective dose to different body organs shows that liver have the lowest dose 0f 0.116±0.03, 0.071±0.04 mSv/y indoor and outdoor while testes have the highest dose of 0.207±0.01, 0.127±0.02 mSv/y indoor and outdoor. In general terms, the study shows that the dose rate and annual effective dose equivalent were within the acceptable limit of 0.274 μSv/h (indoor and outdoor) and 1.0 mSv/y outdoor, but its indoor were slightly above 1.0 mSv/y for general public exposure as reported by the (ICRP, 2007). Again, the annual effective dose for various body organs are all below the permissible and recommended limit of 1.0 mSv/y. the computed excess lifetime cancer risk values indicate that the probability of developing cancer is uncertain hence the study assumed to radiologically safe for residents
References
Anekwe, U.L, Uzoekwe, S.A (2019). Evaluation of annual effective dose equivalent from environmental gamma radiation at sand mine valley in Yenagoa, Nigeria. International Journal of basic science and technology. Vol. 5(1): 65-74.
Avwiri, G.O (2011): Radiation – The good, the bad and the ugly in our environment. An inaugural lecture 79th Series University of Port Harcourt Press. 10
Avwiri, G.O; Oshimobi, J.C; Agbalagba, E.O (2012). Evaluation of radiation hazard indices and excess lifetime cancer risk due to natural radioactivity in soil profile of Udi and Ezeagu local government areas of Enugu State, Nigeria. Comprehensive Journal of Environmental and Earth Science. 1. 1-10.
Brı´gido, O.F., Montalvan, A. E., Rosa S. R., Toma´s, K. Z., and Herna´ndez P., A. (2019). Natural radionuclide content in building materials and gamma dose rate in dwellings in Cuba. Journal of Environmental Radioactivity 99.17: 1834–1839.
Chad-Umoren, Y.E, Adekanmbi, M and Harry, S.O (2007). Evaluation of indoor background ionizing radiation profile of a physics laboratory. Facta Universitatis series: working and living environmental protection 3(1):1-7.
Darwish, D.A.W; Abul-Nasr, K.T.M; El-Khayatt, A.M (2015). The assessment of natural radioactivity and its associated radiological hazards and dose parameters in granite samples from South Sinai, Egypt. J. Radiat. Res. Appl. Sci. 8:17-25.
Deng, W., Tian K., Zhang, Y. (1997). Radioactivity in zircon building tiles. Health. Phys. 1997 Aug. 73(2): 359-72.
Dodge-Wan, D. and Mohan V.P. (2021). Terrestrial gamma radiation dose rate mapping and influence of building materials: case study at Curtin University campus (Miri, Sarawak, Malaysia). J Radioanal Nucl Chem. https:// doi.org/ 10.1007/ s10967- 021- 07641-y
Etuk, S.E; Essiett, A.A; Okechukwu, e; Agbasi, O.E (2017). Measurement of outdoor ambient radioactive radiation and evaluation of radiation indices and excess lifetime cancer risk within Uyo, Unity Park, Uyo, Nigeria. JGEESI, 9(4): 1-9.
Gelana, A., Mohammed, A., Haftu, B., Endale T. and Biniyam N. (2019). A study on Radiation Levels in Buildings on the Main Campus of Haramaya University and at the Towns of Harar and Dire Dawa, Eastern Ethiopia. East African Journal of Sciences Volume 10 (2)
133-144.
Gupta, M. and Chauhan, R.P. (2017). Estimating radiation dose from building materials. Iran. Journal of Radiation. Research. 9.3: 187-194.
ICRP (1996). International Commission on Radiological Protection Age-depended Dose to members of the public from intake of Radionuclides. Part5: Compilation of ingestion and inhalation Coefficients. ICRP publication 72, Pergamon Press, Oxford.
Katharine, Chu (2007). Radiation in building materials Report IAP 2007. Massachusetts Institute of Technology, Cambridge, MA.
Laogun, A.A., Ajayi, N.O. and Agaja, S.A. (2006). Variation in wellhead gamma radiation levels at the Nigeria petroleum development company oil field, Ologbo Edo State, Nigeria. Nig. J. Phys. 18(1):135-140.
NCRP. (1976). National Commission Radiation Protection Report No, 050 – Environmental Radiation Measurements.
Nuraddeen, N.G, Nasiru, R., Alhassan S.A., Abdullahi, M.I., Aminu, I. and Suleiman, B., (2023): Evaluation of radiological risk associated with local building materials commonly used in Northwestern Nigeria, Heliyon 9. e15791https://doi.org/10.1016/j.heliyon.2023.e15791.
Olubusayo, F.O., Stephen, F.O., Sejlo, T.G., Lasun, T.O., Samuel, O.I., and Mutiu, A. F (2023). Evaluation of Natural Radioactivity and Associated Radiological Risks of
Farmland Soil: A Study of a Campus Farmland of Osun State University, Nigeria Springer, https://doi.org/10.1007/s41050-023-00043-x.
Sharma, P, Meher, P.K, Mishra, K.P (2014). Terrestrial gamma radiation dose measurement and health hazard along river Alaknanda and Ganges in India. Journal. Radiat. Res. Appl. Sci. 7(4): 595-600.
Tubosun, I. A., Tchokossa, P., Okunlola, G. A., Balogun, F. A., Fasasi, M. K. and Ekhaeyemhe,
S. (2022). Natural radioactivity associated with mining of rare metal pegmatite of OkeOgun field, Sepeteri, Southwestern Nigeria. International Journal of Science and Technology, 3 (10): 2224e3577.
Ugbede, F.O. and Benson, I.D (2018). Assessment of outdoor radiation levels and radiological health hazards in Emene industrial layout of Enugu State, Nigeria. Int. Phys. Sci Vol. 13(20): pp.265-272.
UNSCEAR (2000). United Nation Scientific Committee on the effects of Atomic Radiation. Sources and effect of Ionizing radiation. Report to the general assembly with scientific annexes. United Nation; New York.
UNSCEAR (2021). United Nation Scientific Committee on the effects of Atomic Radiation. Sources and Effects of Ionizing Radiation. UNSCEAR Report 2021.
Yusuf U., Fagge A.Y., Jabaka S.B., Baju A.I., Shamsuddeen I. M., and Isah A.B. (2023).
Estimation of Radiation Dose in Building Materials Used In Federal University Gusau Using Gamma-Ray Spectroscopy Analysis. International Journal of Science for Global Sustainability.
Zaid, O., Ababaneh Khled, M., Aljarrah, A., Ababaneh, M., and Abhdalmajeed, M.A. (2010). measurement and artificial radioactivity in powder milk corresponding annual effective dose. Radiant. Prot. Dosim. 138(3): 278-283.
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