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AUTHOR(S): 

A.S. Arabi, A.S. Daniel, I.I. Funtua

 

TITLE

Radiochemical Evaluation of groundwater around Mika Uranium Mineralization and
Environs

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ABSTRACT

Naturally occurring radon gas (222Rn) exists in groundwater and previous study of the problem of natural radioactivity in drinking water from wells drilled in rock types rich in uranium has shown tendency to have high radon concentration. It has been widely reported that radon is contributing the largest component of human exposures to natural radiation and it is considered as the second major cause of lung cancer, after cigarrete smoking. Seventeen (17) groundwater samples around Mika Uranium mineralization were collected and 222Rn concentrations were measured using the DURRIDGE RAD7 electronic radon detector. Radon (222Rn) concentrations in the groundwater ranged from 2350 to 46,200 Bq/m3 with an average of 29,400 Bq/m3. The results show that 76.5% of the groundwater samples collected have 222Rn concentrations far above the US.E.P.A maximum contaminant level (MCL) of 11.1 Bq/l (for states without radon monitoring policy and enhanced indoor air programs), while 23.5% has values lower. Meanwhile, all 222Rn values were below the MCL of 100 Bq/l recommended by European Union (EU) for measurements that warrant consideration of possible remedial actions. Borehole samples show relatively higher 222Rn concentrations than samples collected from open-wells. The annual effective dose due to ingestion (Hing) of 222Rn in the groundwater ranged from 0.05 to 0.92 mSv, with an average of 0.59 mSv. These values are within the ICRP recommended reference level of 1 mSv/yr for the intake of radionuclide in water by the general public for a prolonged exposure. 

KEYWORDS

Groundwater: Radon: Nigeria: Hazard: External Hazard

 

REFERENCES

[1]. WHO (2006). Guidelines for drinking water quality: Incorporating first addendum. Vol. 1, World Health Organization Recommendations. – 3rd ed.

[2]. Oni, O.M., Oladapo, O.O., Amuda, D.B., Oni, E.A., Olive-Adelodun, A.O., Adewale, K.Y., and Fasina, M.O. (2014). Radon Concentration in Groundwater of Areas of High Background Radiation in Southwestern Nigeria. Nigerian Journal of Physics. Vol. 25(1) June 2014. Pp 64.

[3]. Arabi, A.S., Kwaya, M.Y., Garba, M.L., Funtua, I.I. and Dewu, B.B.M. (2012). Qualitative Evaluation of Groundwater from Parts of Upper Benue River Basin for Compliance with Regulated Guidelines. International Archive of Applied Sciences and Technology. Vol. 3(1) March (2012):46 – 53.

[4]. Riemann, C. and Banks, D. (2004). Setting Action Levels for Drinking Water: Are we protecting our health or our economy (or our backs!) Science of Total Environment, 332:13 – 21.

[5]. Khoshghalb, S., Sahar, K., Nazanin, K and Iman, C. (2014). The Measurement of the Radon Concentration in the Environment and the Methods of Reducing its Density in the Indoors. Adv. Environs. Biol. 8(6):1786 – 1789.

[6]. Edsfeldt, C. (2001). The Radium Distribution in Some Swedish Soils and its Effect on Radon Emanation. Division of Engineering Geology, Department of Civil and Environmental Engineering; Royal Institute of Technolgy Stckholm, Sweden. Unpublished PhD Thesis.

[7]. ICRP, (1991). 1990 Recommendations of the International Commission on Radiological Protection – User's Edition. ICRP Publication 60, International Commission on Radiological Protection.

[8]. Ray, H.H. and Yusuf, M.B. (2011). The Incidence of Soil Erosion in Zing Local Government Area of Taraba State, Nigeria. Ethiopian Journal of Environmental Studies and management. Vol.4 No. 2.

[9]. Oruonye, E.D. (2014). An assessment of the Trend of Climate Variables in Taraba State, Nigeria. Global Journal of Science Frontier Research: H Environmental and earth Science. Vol 14.

[10]. Funtua, I. I. (1992). Geology and Geochemistry of Uranium Mineralization in Mika North Eastern Nigeria. Unpublished Ph.D Thesis, A.B.U. Zaria Nigeria.

[11]. Haruna I.V., Orazulike D.M. and Samaila N.K. (2013). Trace and Rare Earth Elements Petrochemical Constraint on Tectonogenetic Evolution of the Granitoids of Zing-Monkin area, Adamawa Massif, N.E. Nigeria. Research Journal of Chemical Sciences Vol. 3(1), 32 – 42.

[12]. DURRIDGE, (2014). Durridge Radon Instrumentation: RAD7 Radon Detector Manual (www.durridge.com).

[13]. UNSCEAR (2000). Sources and Effects of Ionizing Radiation. Report to General Assembly, Vol. 1, Annex B, United Nations, New York.

[14]. ICRP, (1993). Publication 65, Protection against Radon-222 at home and at work, Annals of the ICRP, Oxford, U.K., Pergamon, l23(2).

[15]. UNSCEAR. (1993). Sources and effects of ionizing radiation. United Nations Scientific Committee on the Effects of Atomic Radiation, UNSCEAR report to the general assembly with scientific annexes, United Nations, New York.

[16]. WHO (2004). Guidelines for Drinking Water Quality. 3rd Edn., World Health Organisation Recommendations, Geneva, ISBN: 92-45- 154638 7.

[17]. FGN, (2003). Nigeria Basic Ionization Radiation Regulations. Federal Republic of Nigeria; Official Gazette. Government notice No. 218. Published by Federal Government of Nigeria Press: FG097/22004/650(OL163). pp 42.

[18]. Wood, W.W., Kraemer, T.F., Shapiro, A., (2004). Radon (222Rn) in ground water of fractured rocks: a diffusion/ion exchange model. Ground Water 42, 552–567.

[19]. NAS, (1999). National Academy of Science. Report of the Committee on Risk Assessment of Exposure to Radon in Drinking Water, Board on Radiation Effects Research, Commission on Life Sciences, National Research Council, National Academy Press, Washington, DC.

[20]. EU (2001). European Union Commission Recommendation on the protection of the public against exposure to radon in drinking water supplies. Office Journal of the European Community, L 344, 28 December, pp. 85–88.

[21]. SON, (2007). Nigeria standard for drinking water. Standards Organization of Nigeria. NIS554:2007.

[22]. Le Druillennec, T., Ielsch, G., Bour, O., Tarits, C., Tymen, G., Alcalde, G. and Aquilina, L. (2010). Hydrogeological and Geochemical Control of the Variations of 222Rn Concentrations in a Hard Rock Aquifer: Insights into the possible role of fracturematrix exchanges. Applied Geochemistry 25 (2010) 345–356.

[23]. Akerblom, G., Falk, R., Lindgren, J., Mjones, L., Ostergren, I., Soderman, A.L., Nyblom, L., More, H., Hagberg, N., Andersson, P. and Ek, B.M. (2005). Natural radioactivity in Sweden, exposure to internal radiation. Radiological Protection in Transition. Proceeding of the XIV Regular Meeting of the Nordic Society for Radiation Protection, NSFS, Rattvik, Sweden, pp. 211 – 214.

[24]. Brutsaert, W.F., Norton, S.A., Hess, C.T., and Williams, J.S. (1981). Geologic and hydrologic factors controlling radon-222 in ground water in Maine. Ground Water 19:407–417. 

Cite this paper

A.S. Arabi, A.S. Daniel, I.I. Funtua. (2017) Radiochemical Evaluation of groundwater around Mika Uranium Mineralization and
Environs. International Journal of Agricultural Science, 2, 59-67

 

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