Radiological Assessment of Soil Samples Collected from Mining Sites in Ijero Ekiti, Ekiti State, Southwest, Nigeria

Authors

  • Ifedayo Olukemi Adeojo
    Federal University of Technology and Environmental Sciences, Iyin - Ekiti
  • Taiwo Temitope Adeojo
    Federal University of Health Sciences, Ila Orangun
  • Olumuyiwa Femi Adewumi
    Federal University of Health Sciences, Ila-Orangun image/svg+xml
  • Olumuyiwa Gabriel Olupitan
    Federal University of Health Sciences, Ila-Orangun image/svg+xml
  • Oluwatosin Henry Adeusi
    Federal University of Health Sciences, Ila-Orangun image/svg+xml
  • Omolola Comfort Aregbesola
    Bamidele Olumilua University of Education, Science and Technology, Ikere-Ekiti image/svg+xml
  • Ayodeji Hammidu Rasheed
    Osun State Polytechnic, Iree image/svg+xml

Keywords:

Environmental Safety, Public Health, Miners, Residents, Uranium-238, Thorium-232, Potassium-40

Abstract

Measurements of radioactivity in soil samples from mining sites are vital for assessing environmental safety and public health risks. The primary radionuclides of concern in soil samples from mining areas are uranium-238, thorium-232, and potassium-40. Ijero-Ekiti, a prominent mining area in southwestern Nigeria, is known for the extraction of minerals. However, these mining activities can disturb naturally occurring radioactive materials leading to increased levels of radioactivity in soils. Prolonged exposure to such radionuclide can pose health risks to miners and residents. Present study aim to evaluate the levels of radioactivity in soil samples from the mining site in Ijero Ekiti in order to assess potential environmental and health risks using NaI(Tl) gamma ray spectrometer that is interfaced with a series of 10 plus Canberra Multi-channel Analyzer. The results of the findings show that the mean radioactivity concentration of K-40, Th-232, U-238 in the soil samples were of values 296.172 ± 10.94 (Bqkg⁻¹), 8.68 ± 18.84 Bqkg⁻¹ and 92.40 ± 93.41 respectively. The resulting radiation dose values obtained were low and may carry no serious radiological implications to the workers and the population in the vicinity of the mining sites. It is therefore recommended that further study should be carried out in the study area to ascertain the safety of the populace due to continuous mining activities in the area and the used of modern mining equipment which may contribute to the radioactivity level of the soil.

Dimensions

Adewumi, A. J., & Ogundele, O. D. (2024). Hidden hazards in urban soils: A meta-analysis review of global heavy metal contamination (2010–2022), sources and its ecological and health consequences. Sustainable Environment, 10(1), 2293239. https://doi.org/10.1080/27658511.2023.2293239

Alasadi, L. A., & Abojassim, A. A. (2022). Mapping of natural radioactivity in soils of Kufa districts, Iraq using GIS technique. Environmental Earth Sciences, 81(10), 1–13.

Baldık, R., Aytekin, H., & Erer, M. (2011). Radioactivity measurements and radiation dose assessments due to natural radiation in Karabük, Turkey. Journal of Radioanalytical and Nuclear Chemistry, 289(2), 297–302. https://doi.org/10.1007/s10967-011-1077-z

Bortey-Sam, N., Nakayama, S. M. M., Ikenaka, Y., Akoto, O., Baidoo, E., Mizukawa, H., & Ishizuka, M. (2015). Health risk assessment of heavy metals and metalloid in drinking water from communities near gold mines in Tarkwa, Ghana. Environmental Monitoring and Assessment, 187, 1–12. https://doi.org/10.1007/s10661-015-4630-3

Encyclopaedia Britannica. (2025). Radioactivity. https://www.britannica.com

Falade, A., Oni, T., & Oyeneyin, A. (2023). Comparative effect of lateritic shield in groundwater vulnerability assessment using GLSI and LC models: A case study of Ijero mining site, Ijero-Ekiti. Modeling Earth Systems and Environment, 9(2), 1–10. https://doi.org/10.1007/s40808-023-01689-3

Gaffney, J. S., & Marley, N. A. (2006). Radionuclide sources. In M. Pöschl, M. L. Leo, & L. Nollet (Eds.), Radionuclide concentrations in food and the environment (pp. 23–36). CRC Press.

Gupta, M., Chauhan, R. P., Garg, A., Kumar, S., & Sonkawade, R. G. (2010). Estimation of radioactivity in some sand and soil samples. Indian Journal of Pure & Applied Physics, 48, 482–485.

Joel, E. S., Omeje, M., Olawole, O. C., Adeyemi, G. A., Akinpelu, A., Embong, Z., & Saeed, M. A. (2021). In-situ assessment of natural terrestrial radioactivity from Uranium-238 (^238U), Thorium-232 (^232Th), and Potassium-40 (^40K) in coastal urban environment and its possible health implications. Scientific Reports, 11(1), 1–14.

Kapil, C., Mehta, V., Shikha, D., & Kanse, S. (2023). Estimation of radionuclide concentrations and exhalation rates from soils of Patiala and Fatehgarh Sahib Districts of Punjab. Journal of Radioanalytical and Nuclear Chemistry, 332(11), 4391–4401. https://doi.org/10.1007/s10967-023-09134-6

Kulikov, G. G., Shmelev, A. N., Apse, V. A., & Kulikov, E. G. (2022). Proliferation protection of uranium due to the presence of U-232 decay products as intense sources of hard gamma radiation. Nuclear Energy and Technology, 8(2), 121–126.

Lu, Y., Yin, W., Huang, L., Zhang, G., & Zhao, Y. (2011). Assessment of bioaccessibility and exposure risk of arsenic and lead in urban soils of Guangzhou City, China. Environmental Geochemistry and Health, 33, 93–102. https://doi.org/10.1007/s10653-010-9324-8

Ogundele, L. T., Oluwajana, O. A., Ogunyele, A. C., & Inuyomi, S. O. (2021). Heavy metals, radionuclides activity and mineralogy of soil samples from an artisanal gold mining site in Ile-Ife, Nigeria: Implications on human and environmental health. Environmental Earth Sciences, 80(5), Article 202. https://doi.org/10.1007/s12665-021-09494-w

Oladejo, O. F., Olukotun, S. F., Ogundele, L. T., Gbenu, S. T., & Fakunle, M. A. (2020). Radiological risk assessment of naturally occurring radioactive materials (NORMs) from selected quarry sites in Edo State, South-South Nigeria. Environmental Earth Sciences, 79(5), 1–8.

Rice, K. M., Walker, E. M., Jr., Wu, M., Gillette, C., & Blough, E. R. (2014). Environmental mercury and its toxic effects. Journal of Preventive Medicine and Public Health, 47(2), 74–83. https://doi.org/10.3961/jpmph.2014.47.2.74

Sahoo, S. K., Zunic, Z. S., Veerasamy, N., Natarajan, T., Zhukovsky, M., Jovanovic, P., Veselinovic, N., Janicijevic, A., Onischenko, A., Yarmoshenko, I., & Ramola, R. C. (2024). Distribution of radionuclides and associated radiological risk assessment of soils from Niška Banja, Serbia. Journal of Radioanalytical and Nuclear Chemistry, 333(5), 2605–2613. https://doi.org/10.1007/s10967-023-09017-w

Sead, S. M., Uzorka, A., & Olaniyan, A. O. (2024). Investigation into radioactivity levels in soil samples from wheat cultivation sites in Kapchorwa District, Uganda. Discover Environment, 2, Article 55. https://doi.org/10.1007/s44274-024-00080-y

Strumińska-Parulska, D., Falandysz, J., & Moniakowska, A. (2021). Beta-emitting radionuclides in wild mushrooms and potential radiotoxicity for their consumers. Trends in Food Science & Technology, 114, 672–683.

Taheri, A., Taheri, A., Fathivand, A. A., & Mansouri, N. (2019). Risk assessment of naturally occurring radioactive materials (NORM) in the hydrocarbon sludge extracted from the South Pars gas field in Iran. Process Safety and Environmental Protection, 125, 102–120.

United Nations Scientific Committee on the Effects of Atomic Radiation. (1993). Sources and effects of ionizing radiation (Annex A, A/AC.82/R.526). United Nations.

United Nations Scientific Committee on the Effects of Atomic Radiation. (2000). Sources and effects of ionizing radiation: Report to the General Assembly. United Nations.

Uzorka, A. (2022). Photoconductivity on K-feldspar. International Journal of Modern Physics B, 36(23), 2250151

Yadav, M., Jindal, M. K., & Ramola, R. C. (2023). Study of radionuclides in rock samples from Ukhimath area and its correlation with soil and water data. Chemical Africa, 6(4), 2165–2173. https://doi.org/10.1007/s42250-023-00635-1

Published

2026-06-19

How to Cite

Adeojo, I. O., Adeojo, T. T., Adewumi, O. F., Olupitan, O. G., Adeusi, O. H., Aregbesola, O. C., & Rasheed, A. H. (2026). Radiological Assessment of Soil Samples Collected from Mining Sites in Ijero Ekiti, Ekiti State, Southwest, Nigeria. Nigerian Journal of Physics, 35(3), 119-123. https://doi.org/10.62292/njp.v35i3.2026.617

Issue

Vol. 35 No. 3 (2026): Nigerian Journal of Physics - Vol. 35 No. 3

Section

Articles
Copyright & Licensing

Copyright (c) 2026 Ifedayo Olukemi Adeojo, Taiwo Temitope Adeojo, Olumuyiwa Femi Adewumi, Olumuyiwa Gabriel Olupitan, Oluwatosin Henry Adeusi, Omolola Comfort Aregbesola, Ayodeji Hammidu Rasheed

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

How to Cite

Adeojo, I. O., Adeojo, T. T., Adewumi, O. F., Olupitan, O. G., Adeusi, O. H., Aregbesola, O. C., & Rasheed, A. H. (2026). Radiological Assessment of Soil Samples Collected from Mining Sites in Ijero Ekiti, Ekiti State, Southwest, Nigeria. Nigerian Journal of Physics, 35(3), 119-123. https://doi.org/10.62292/njp.v35i3.2026.617