Evaluation of Natural Radioactivity, Radiological Hazards and Geostatistical Model of Soils in the Vicinity of Otukpo Rice Mill, Benue State, Nigeria Using Gamma-Ray Spectrometry

References

[1] Rafique, M., Rahman, S. U., Basharat, M., Aziz, W., Ahmad, I., Lone, K. A., & Ahmad, K. 2011. Evaluation of excess life cancer risk from gamma radiation levels in soils of Pakistan. Radiation Protection Dosimetry, 143(2–3), pp. 331–337. https://doi.org/10.1093/rpd/ncq507

[2] Saito, K., Petoussi-Henss, N., Zankl, M., & Jacob, P. 2005. Calculation of organ doses from environmental gamma rays using realistic human phantoms. Applied Radiation and Isotopes, 63(1), pp. 63–74. https://doi.org/10.1016/j.apradiso.2005.01.005

[3] United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). 2000. Sources and effects of ionizing radiation (Vol. I). United Nations.

[4] United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). 2008. Sources and effects of ionizing radiation (Vol. I). United Nations.

[5] Beretka, J., & Mathew, P. J. 1985. Natural radioactivity of Australian building materials, industrial wastes and by-products. Health Physics, 48(1), pp. 87–95. https://doi.org/10.1097/00004032-198501000-00007

[6] Tufail, M., Akhtar, N., & Waqas, M. 2007. Measurement of terrestrial radiation dose rates from soil samples of Pakistan. Radiation Protection Dosimetry, 123(3), pp. 333–337. https://doi.org/10.1093/rpd/ncl495

[7] Aduayi, E. A., Jibiri, N. N., & Okeyode, I. C. 2020. Effective dose assessment from natural radioactivity in building materials used in Nigeria. Heliyon, 6(6), e04601. https://doi.org/10.1016/j.heliyon.2020.e04601

[8] Jibiri, N. N., Alausa, S. K., & Farai, I. P. 2020. Radiological hazard assessment of natural radioactivity in soils from selected locations in Nigeria. Radiation Protection Dosimetry, 189(1), pp. 1–10. https://doi.org/10.1093/rpd/ncaa040

[9] International Atomic Energy Agency (IAEA). 2003. Guidelines for radioelement mapping using gamma ray spectrometry (IAEA-TECDOC-1363). IAEA.

[10] United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). 2020. Sources, effects and risks of ionizing radiation. United Nations. Jurnal UNS

[11] Rana, S., Kant, K., Garg, S., & Chauhan, R. P. 2021. Natural radioactivity levels and radiological risk assessment in agricultural soils. Environmental Earth Sciences, 80, pp. 1–12. https://doi.org/10.1007/s12665-021-09686-5

[12] International Commission on Radiological Protection (ICRP). 2019. Radiological protection principles for environmental exposure (ICRP Publication 136). Elsevier.

[13] Sahoo, S. K., Mishra, S., Jha, V. N., & Tripathi, R. M. 2018. Radiological risk assessment due to natural radioactivity in soils. Journal of Environmental Radioactivity, 192, pp. 1–8. https://doi.org/10.1016/j.jenvrad.2018.06.012

[14] Turner, D., & Ntumba, P. 2024. Soil radioactivity and hazard assessment in agricultural regions: Trends and implications for sustainable land use. Journal of Environmental Radioactivity, 256, 106739.

[15] Olugbenga Olabimtan, S., Chifu, E. N., Nasir, M., & Hafeez, H. Y. 2025. Activity concentrations of natural radioactivity and radiological dosimetry of virgin and agricultural soils in Kano State, Nigeria. Journal of Physics: Theories and Applications. Jurnal UNS

[16] Eke, A. R., Akomolafe, I. R., & Idowu, R. 2024. Assessment of radiation hazard indices due to natural radionuclides in soil samples from Imo State University, Owerri, Nigeria. Repository of Radiological Studies. RUN Repository

[17] Ogundele, L. T., Ayeku, P. O., Inuyomi, S. O., Ogunsakin, O. M., Oladejo, O. F., & Adejoro, I. A. 2024. Assessment of naturally occurring 40K, 232Th and 238U and their associated radiological hazard indices in soils used for building in Ondo West Local Government Area, Southwestern Nigeria. International Journal of Environmental Quality. EQA

[18] Olugbenga Olabimtan, S., Chifu, E. N., Nasir, M., & Hafeez, H. Y. 2025. Activity concentrations of natural radioactivity and radiological dosimetry of virgin and agricultural soils in Kano State, Nigeria. Journal of Physics: Theories and Applications. Jurnal UNS

[19] Oladejo, O. F., Olukotun, S. F., Rufai, A. B., et al. 2025. Assessment of radiation hazards from natural radionuclide activity in quarry sites and surrounding soils in Osun State, Southwest Nigeria. Scientific Reports, 15, 19345. https://doi.org/10.1038/s41598-025-02239-w

[20] Smith, J. L., Ahmed, T., & Zhao, L. 2023. Natural radionuclide distribution and radiological risk assessments in soils across different geological terrains. Environmental Earth Sciences, 82(4), 225.

@article{1715081,
      author = {Onoja Emmanuel Daniel, Egwaba Endurance, Amanyi Inalegwu Matthew, Ekwu Ohi M, Anthony Eko},
      title = {Evaluation of Natural Radioactivity, Radiological Hazards and Geostatistical Model of Soils in the Vicinity of Otukpo Rice Mill, Benue State, Nigeria Using Gamma-Ray Spectrometry},
      journal = {Iconic Research And Engineering Journals},
      year = {2026},
      volume = {9},
      number = {9},
      pages = {857-864},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1715081.pdf},
      abstract = {This study uses gamma-ray spectrometry to examine the natural radioactivity levels and related radiological risks in the soils around the Otukpo Rice Mill. The activity concentrations of naturally occurring radionuclides (uranium-238 (238U), thorium-232 (232Th), and potassium-40 (40K)) were measured in soil samples taken from specific areas surrounding the rice mill. Radium equivalent activity (Raeq), absorbed dose rate, annual effective dose (AED), external hazard index (Hex), and internal hazard index (Hin) were calculated to evaluate possible health risks to employees and the community. According to the findings, 238U and 232Th show moderate levels of activity, while 40K contributes the highest concentration. The radiological hazard indices were below the globally advised safety limits, indicating low radiological risk. Inverse distance weighting (IDW) geostatistical analysis and predictive risk modelling show spatial variations in radionuclide distribution, with localised areas exhibiting relatively elevated values. The results emphasised the significance of ongoing monitoring of agro-industrial areas and offer baseline radiological data for the Otukpo Rice Mill environment. This study supports the region's sustainable land-use planning, public health protection, and environmental radiation assessment.},
      keywords = {Geostatistical Modelling, Soil, Radium Equivalent Activity, Gamma-Ray Spectrometry, Natural Radioactivity, Radiological Hazard Indices},
      month = {March},
      doi = {https://doi.org/10.64388/IREV9I9-1715081}
  }