ASSESSMENT OF NATURAL RADIONUCLIDES IN SOIL SAMPLES FROM MICHIKA, ADAMAWA, STATE NIGERIA
Naturally occurring radionuclides in the environment constitute about 85% of public exposure to terrestrial gamma radiation. These radionuclides can be found in sands,clays, soils and rocks, and many ores and minerals, commodities, recycled residues, and other appliances used by humans. There is therefore the need to assess the occurrence of natural radionuclides in Soil Samples from Michika, Adamawa State Nigeria. Forty-six (46) soil samples were collected across different location in Michika, Adamawa State, Nigeria. Gamma ray spectroscopy was used for the analysis. The results obtained show that the mean activity concentration for 226Ra, 232Th and 40K are 81.27, 101.28 and 324.79 Bq/kg respectively. These values are higher than the control value of 35,30 and 35 Bq/kg for 226Ra, 232Th and 40K set by UNSCEAR. The absorbed dose rate (D) ranges from 60.77 to 248.65 nGy/h, which is above the maximum UNSCEAR accepted value of 59nGy/h. The values of total annual effective dose lie between 0.08 and 0.31 mSv y-1 with mean value of 0.14mSv y-1. Also, the mean values of Radium Equivalent Activity were 251.11 Bq/kg. Almost all the value of Raeq were below the maximum recommended value. The mean value of total cancer risk range from 3.28E-6 to 1.3E-5 with mean value of 5.93E-6. All the mean values were above the acceptable range. It can be concluded that the soil is radiologically unsafe for human and animal use. Continuous radiological monitoring of the soil is recommended to safeguard the health of the populace.
Asaduzzaman, K.H., Khandaker, M.U., Amin, Y.M., Bradley, D.A. (2016). Natural radioactivity levels and radiological assessment of decorative building materials in Bangladesh. Indoor and Built Environment Vol.25, No.3, pp 541–550. DOI: https://doi.org/10.1177/1420326X14562048
Asha Rani, Sudhir Mittal, RohitMehra, R C Ramola (2015). Assessment of natural radionuclides in the soil samples from Marwa region of Rajasthan, India Applied Radiation and Isotopes 101 (2015) 122–126 DOI: https://doi.org/10.1016/j.apradiso.2015.04.003
Bajoga A.D., A.N. Al-Dabbous, A.S. Abdullahi, N.A. Alazemi, Y.D. Bachama, S.O. Alaswa (2019). Evaluation of elemental concentrations of uranium, thorium and potassium in top Soils from Kuwait DOI: https://doi.org/10.1016/j.net.2019.04.021
Belivermis, M., Kilic O., Crytuk, Y., Topcough S. (2009). The effects of physiochemical Properties of gamma emitting natural radionuclide level in the soil profile of Istanbul, Environment monitoring and assessment 163:15-16. DOI: https://doi.org/10.1007/s10661-009-0812-1
Dankawu UM, HY Shuaibu, MN Maharaz, T. Zangina, FM Lariski, M. Ahmadu, SS Zarma, JNBenedict, M. Uzair, G.D Adamu, and A. Yakubu. (2021). Estimation of Excess Life Cancer Risk and Annual Effective Dose for Boreholes and Well Water in Dutse, Jigawa State Nigeria. DUJOPAS Vol.7 No.4b, pp. 113-122, 2021. DOI: https://doi.org/10.4314/dujopas.v7i4a.22
FaureG., Principles of Isotope Geology, second ed., John Wiley & Sons, 1986, 0471864129.
Ibrahiem, N.M., Abdel-Ghani, A.H., Shawky, S.M., Ashraf, E.M., Farouk, M.A., (1993).Radiological study on soils, foodstuff and fertilizers in the Alexandria region. Egypt Health Phys. 64, 620–627. DOI: https://doi.org/10.1097/00004032-199306000-00007
ICRP. (2007). 2006 recommendations of the International Commission on Radiological Protection, ICRP Publication 103, Pergamon Press, Oxford. DOI: https://doi.org/10.1787/nuclear_law-2006-5k9czfxfww6l
ICRP (2012). Compendium of Dose Coefficients based on ICRP Publication 60. ICRP Publication 119. Ann. ICRP 41(Suppl.). DOI: https://doi.org/10.1016/j.icrp.2012.06.038
Jibiri, N.N., Farai, I.P. and Alausa, S.K. (2007). Activity concentration of Ra-226, Ra-228 and 40 in food crops from a high background radiation area in Bisichi Jos, Plateau State. Nigeria Radiation environmental biophysics. 46:53-59. DOI: https://doi.org/10.1007/s00411-006-0085-9
Lydie RM and Nemba RM (2009). The annual effective dose due to natural radionuclides in the reservoir and tap water in Yaoundé area, Cameroon. The South Pacific Journal of Natural and Applied Sciences, 27(1): 61-65. DOI: https://doi.org/10.1071/SP09011
MenagerM.T., M.J. Heath, M. Ivanovich, C. Montjotin, C.R. Barillon, J. Camp, S.E. Hasler, Migration of uranium from uranium-mineralised fractures into the rock matrix in granite: implications for radionuclide transport around a radioactive waste repository, in: Fourth Inter. Conference of Chemistry and Migration Behaviour of Actinides and Fission Products.
Geosphere (Migration 1993), Charleston, USA, 12e17. RadiochimicaActa 66/67, 1993, pp. 47e83.
Malanca, A., Gaidolif, L., Pessina, V., Dallara, G., 1996. Distribution of 226Ra, 232Th and 40K in soils of Rio Grande do Norte, Brazi. J. Environ. Radioact. 30, 55–67 DOI: https://doi.org/10.1016/0265-931X(95)00035-9
Nur A. and Ayuni K.N (2011). Hydro-geophysical study of Michika and environs, northeast Nigeria
TzortzisM., H. Tsertos, Determination of thorium, uranium and potassium elemental concen- trations in surface soils in Cyprus, J. Environ. Radioact. 77 (2004) 325e338 DOI: https://doi.org/10.1016/j.jenvrad.2004.03.014
UNSCEAR. (2000). Sources and Effects of Ionizing Radiation. United Nation Scientific Committee on the Effects of Atomic Radiation Sources to the General Assembly with Annexes, Effects and Risks of Ionizing Radiation. United Nations publication, New York.
WHO, World Health Organization (2006). Guidelines for Drinking Water Quality: 3rd edition. Chapter 9; Radiological aspects. At http://www.who.int/water_sanitation_health/dwq/gdwq3rev/en/index.
Xinwei, L., Lingqing, W., Xiaodan, J., Leipeng, Y., Gelian., D., (2006). Specific activity and hazards of Archeozoic-Cambrian rock samples collected from the Weibei area of Shaanxi, China. Radiation protection and dosimetry. 118, 352-359. DOI: https://doi.org/10.1093/rpd/nci339
Zarma SS, NN Garba, N Rabi’u, UM Dankawu, S. Bello, GD Adamu and Chifu E. Ndikilar Assessment of Natural Radionuclides in Soil Samples from Michika, Adamawa, State Nigeria. DUJOPAS Vol.9 No.1a, pp. 168-176, 2023 DOI: https://doi.org/10.4314/dujopas.v9i1a.17
Copyright (c) 2023 FUDMA JOURNAL OF SCIENCES
This work is licensed under a Creative Commons Attribution 4.0 International License.
FUDMA Journal of Sciences