Estimation of Lung Cancer Risk Associated with Radon Exposure from Quarries in Ede, Southwestern Nigeria
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Radon and its progeny are invariably present in the environment. However, its concentration depends mainly upon the content of its parent radionuclide beneath the earth's surface and its diffusion through the surface. This research hereby measures the radon growth from pulverized rock samples collected from five (5) quarries located in Ede, Southwest Nigeria using RAD7 and estimates the cancer risk that may be associated with exposure to the quarry dust by the workers and nearby occupants. The result showed that the radon concentration ranged from 65.03 to 397.76 Bqm-3 while the annual effective exhalation dose ranged from 0.042 to 0.399 mSvy-1 which is below the ICRP recommended limit of 1 mSvy-1. The excess lifetime cancer risk (ELCR) ranged from 0.167 x 10-3 to 1.592 x 10-3 with esPRO quarry having the lowest and Tewo-Crown quarry having the highest compared to the recommended limit of 0.29 x 10-3. Although low values were recorded for the assayed quarry sites, however, regular monitoring of the quarry site is important, as the continuous inhalation of the quarry dust may be hazardous to the health.
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Ajayi, T.R., (1981). On the geochemistry and origin of the Amphibolites in Ife – Ilesha area S.W. Nigeria. J. Min. Geol., 17: pp. 179-196.
Akinloye M. K., Isola G. A., and Ayanlola P. S., (2019). Comparative Study on Radiological Impact of Quarry Industries: a case study of Johnson Quarry, Ondo State and Irepodun Quarry, Osun State, Nigeria; International Journal of Scientific and Engineering Research; 10(8); 560 – 566
Durridge Company Inc. (2010). Reference Manual version 6.0.1, RAD-7 Electronic Radon Detector
Gbadebo, A.M., Ayedun, H., and Okedeyi, A.S. (2011). Assessment of Radon Level Within and Around Stonebridge Quarry Site, Km 22 Lagos Ibadan Express Way, Southwest Nigeria. Environmental Research Journal 5(2) pp.25-30.
Imeh, E. E., Emmanuel, N. A. (2016). Evaluation of Radiological Hazard Indices Due to Radioactivity in Quarry Sites in Itu, Akwa Ibom State, Nigeria. International Journal of Scientific Research in Environmental Sciences, 4(3), pp. 0071-0077.
International Commission on Radiological Protection (1991). Recommendations of the International Commission on Radiological Protection. ICRP Publication 60, Press, Oxford.
International Commission on Radiological Protection (1993). Protection against Radon-222 at home and at work. ICRP Publication 65, Annals of the ICRP. Vol. 23, Pergamon Press, Oxford.
ICRP, International Commission on Radiological Protection (2009): Statement on Radon, ICRP Ref. 00/902/09
Lawal M. K., Ayanlola P.S., Oladapo O.O., Oni O.M., Aremu A.A. (2021). Assessment of radon exhalation rates in mineral rocks used in building decoration in Nigeria, Radiat. Prot. Environ. 44 (3 & 4) (2021) 1–7, https://doi.org/10.4103/rpe.rpe.
Ojo T.J. and Ajayi I.R. (2015) Outdoor radon concentration in the township of Ado-Ekiti Nigeria. Journal of atmospheric pollution. 3(1) pp 18-21.
Taskin H, Karavus M, Topalloglu A, Hindroglu S, Karahan G (2009). Radionuclides Concentration in soils and Lifetime Cancer Risk of the Gamma Radioactivity in Kirklareli, Turkey. Environmental Radioactivity, 100: 4953
Stoulos S., Manolopoulou M., and Papastefanou C. (2003). Assessment of natural radiation exposure and radon exhalation from building materials in Greece. Journal of environmental radioactivity 69. 225 – 240.
UNSCEAR (2000). Sources and Effects of ionizing Radiations. United Nations committee on the effect of atomic Radiation, UNSCEAR 2000 Report to the general Assembly, with Scientific Annexes. Vol.2, Effects. United Nation Sales Publication, New York.