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Trace elements and radioactivity measurements in some terrestrial food crops in Jos-plateau, north central, Nigeria

Published online by Cambridge University Press:  28 February 2007

N. N. Jibiri  and
J. C. Agomuo
N. N. Jibiri
Affiliation:
Radiation and Health Research Physics Laboratory, Department of Physics, University of Ibadan, Oyo State, Nigeria
J. C. Agomuo
Affiliation:
Radiation and Health Research Physics Laboratory, Department of Physics, University of Ibadan, Oyo State, Nigeria
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Abstract

Some crops of important nutritive requirements have been collected from farmlands located in Bitsichi an old tin mining town in north central region of Nigeria. The food crops were analyzed in order to determine trace element concentrations level using Neutron Activation Analysis (NAA). The activity concentrations due to natural radionuclides in the food samples and soil samples collected within the root zone of the crops were also determined using gamma-ray spectrometry (GRS). The NAA results obtained showed higher concentration of Potassium among the essential elements in all the crops. Calcium concentration in both maize and Guinea corn was below detection limit and also Zn in Green beans, sweet potato and cassava. The trace elements; Sc, Hf, Sm, and Th, were below detection limit in all the crops except in Green beans. Rubidium (Rb) and lanthanum (La) were below detection limits only in Cabbage. The activity concentrations of the natural radionuclides in the food samples were found to vary between 83 and 129 Bq kg-1 for 40K, 19 and 30 Bq kg-1 for 226Ra and 27 to 41 Bq kg-1 for 232Th. In the soil samples the activity concentrations varied between 177 and 271 Bq kg-1 for 40K, 53 and 96 Bq kg-1 for 226Ra and 73 to 176 Bq kg-1 for 232Th. Results of activity concentration levels of the radionuclides obtained in similar crops collected for control measurements were found to be very low compared to those from the study area. The effective dose due to intake of the food crops considered in the study area was estimated based on the measured activity concentrations of 226Ra and 232Th in the food crops. It was found to vary between 0.01 mSv y-1 (Acha) and 1.35 mSv y-1 (Cassava) with a cumulative total dose estimated as 2.5 mSv y-1. The mining activities in the area are seen to have influenced the concentration of these trace elements and radionuclides in the food crops. However, they are seen not to pose any serious internal health burden due to ingestion given the realities of food choice by individuals in the study area.

Keywords

Keywords: food cropstrace elementsradioactivityingestion doseJos-plateauNigeria
Type
Research Article
Information
Radioprotection , Volume 42 , Issue 1 , January 2007 , pp. 29 - 42
Copyright
© EDP Sciences, 2007

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References

Akinloye, M.K., Olomo, J.B. (2000) The measurement of the natural radioactivity in some tubers cultivated in farmlands within the Obafemi Awolowo University Ile-Ife, Nigeria, Nig. J. Phys. 12, 60-63.
Alexander, M.J. (1996) The effectiveness of small scale irrigated agriculture in the reclamation of mine land soils on the Jos Plateau Nigeria, Land Degrad. Develop. 7, 77-85. 3.0.CO;2-4>CrossRef
Alexander, M.J., Kidd, A.D. (2000) Farmer’s capability and institutional incapacity in Reclaiming disturbed land on the Jos Plateau, Nigeria, J. Environm. Managem. 59, 141-155.
Arogunjo, A.M (2003) Natural radionuclides content of some local cereals in Akure, Southwestern Nigeria, Nig. J. Pure Appl. Phys 2, 34-35.
Babalola, I.A. (1984) Radiation measurement and assay of tailing from high natural radioactivity in Plateau State, Nig. J. Sci. 18, 98‑101.
Badejoko, T. (1975) Evidence of migmatite differentiation in the young granites of Nigeria, Nig. J. Mining Geol. 10, 42-67.
Breuninger, M.I., Schachtel, G.A., Luhraman, P.M., Hartmann, B., Neuhauser-Berthold, M. (2002) Complex correlation structure in consumption rates of major food group: Implications for the assessment of radiation exposure, Public Health Nutr. 6, 87-94.
Farai, I.P., Sanni, A.O. (1992) 222Rn in a groundwater in Nigeria: A Survey, Health Phys. 62, 96‑98. CrossRef
Farai, I.P., Jibiri, N.N. (2000) Baseline studies of terrestrial outdoor gamma dose rate evels in Nigeria, Rad. Prot. Dosim. 88, 247-250. CrossRef
Hernandez, F., Hernandez-Armas, J., Catalan, A., Fernandez-Aldecoa, J.C., Landeras, M.I. (2004) Activity concentrations and mean effective dose of foodstuffs on the Island of Tenerife, Spain, Rad. Prot. Dosim. 111, 205-210. CrossRef
ICRP Publication 72 (1996) Age-dependent doses to members of the public from intake of radionuclides: Part 5. Compilations of Ingestion and inhalation dose coefficients. Pergamon Press, Oxford
Jibiri, N.N., Ajao, A.O. (2005) Natural activities of 40K, 238U and 232Th in Elephant grass (pennisetum purpureum) in Ibadan, Metropolis Nigeria, J. Environ. Radioact. 78, 105-111. CrossRef
Jibiri, N.N., Bankole, O.S. (2006) Soil radioactivity and radiation absorbed dose rates at roadsides in high-traffic density area in Ibadan Metropolis, southwestern, Nigeria, Rad. Prot. Dosim. 118, 453-458. CrossRef
Maziya-Dixon, B., Akinyele, I.O., Oguntona, E.B., Sanusi, R.A., Harris, E. (2004) Nigeria food consumption and nutrition survey 2001-2003 (Summary), Publication of the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, Nigeria Food Survey 1, 1-75.
Mc Donald, P., Jackson, D., Leonard, D.R.P., Mc Kay, K. (1999) An assessment of 210Pb and 210Po terrestrial foodstuffs from regions of potential technological enhancement in England and Wales, J. Environ. Radioact. 43, 15-29. CrossRef
Njafang, N., Matschullat, M., Tchouankoue, T. (2006) Trace elements in soils and plants of the noun valley, western Cameroon: a contribution to the development of a baseline biogeochemical database, Geophys. Res. Abstr. 8, 0760.
Olayemi J.K (1998) Food security in Nigeria. Research report No 2- series of Development Policy Center Agodi Ibadan Nigeria.
Olomo, J.B. (1990) The natural radioactivity in some Nigerian foodstuffs, Nucl. Instrum. Meth. A 299, 666‑669. CrossRef
Oresegun, M.O., Babalola, I.A. (1990) Occupational radiation exposure associated with milling of Th‑U rich Sn in Nigeria, Health Phys. 58, 213‑215.
Oresegun, M.O., Babalola, I.A. (1993) The environmental gamma radiation level of Jos, Nigeria, Nig. J. Sci. 27, 263-268.
Pasquini, M.W., Alexander, M.J. (2005) Soil fertility management strategies on the Jos Plateau: the need for integrating empirical and scientific knowledge in agricultural development, Geograph. J. 171, 112-124. CrossRef
RIFE (2005) Radioactivity in Food and the Environment, The Center for Environment, Fisheries and Aquaculture science (CEFAS), Radioactivity in food and the environment, 2004 report RIFE-10.