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Activity concentrations of primordial radionuclides in sediments of surface– water dams in southwest Nigeria –a baseline survey

Published online by Cambridge University Press:  09 December 2008

M. O. Isinkaye  and
I. P. Farai
M. O. Isinkaye
Affiliation:
Department of Physics, University of Ado-Ekiti, P.M.B 5363, Ado-Ekiti, Nigeria
I. P. Farai
Affiliation:
Department of Physics, University of Ibadan, Nigeria
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Abstract

The radionuclide contents of sediment samples collected from 20 surface-water dams in southwestern Nigeria have been determined by low-level gamma-spectroscopy. The average concentration of 40K in each of the dams varied between 110.9 ± 11.9 Bq kg-1 and 1025.9 ± 36.8 Bq kg-1 with an overall mean (± SD) of 549.3 ± 247.6 Bq kg-1 while that of 238U varied from 17.1 ± 3.6 to 51.9 ± 8.7 Bq kg-1 with an overall mean (± SD) of 27.6 ± 8.5 Bq kg-1 and that of 232Th varied from 26.2 ± 3.6 Bq kg-1 to 130.1 ± 23.7 Bq kg-1 with overall mean (± SD) of 62.0 ± 26.1 Bq kg-1. The variability of the values shows the wide disparity in the measured activity concentrations. The mean radium equivalent of 158.9 Bq kg-1 was calculated for the sediments in the dams. No artificial gamma emitting radionuclide was detected in the samples.

Keywords

Activity concentrationsedimentsurface-water damradium equivalent activitysouthwest Nigeria
Type
Research Article
Information
Radioprotection , Volume 43 , Issue 4 , October 2008 , pp. 533 - 545
Copyright
© EDP Sciences, 2008

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References

Abdi, M.R., Faghihian, H., Mostajaddavati, M., Hasanzadch, A., Kamali, M. (2006) Distribution of natural radionuclides and hot points in Coasts of Hormozgan, Persian Gulf, Iran, J. Radioanal. Nucl. Chem. 270, 319-324. CrossRef
Ajayi, O.S. (2000) Distribution of natural radioactivity in rocks from Ikogosi-Ekiti, southwestern Nigeria and its radiological implications, Health Phys. 79, 192-195. CrossRef
Alam, M.N., Chowdhurry, M.I., Kamal, M., Ghose, S., Mahmmod, N., Matin, A.K.M.A., Saikat, S.Q. (1997) Radioactivity in sediments of the karnaphuli River estuary and the Bay of Bengal, Health Phys. 73, 385-387. CrossRef
Al-Masri, M.S., Byrakdar, M.E., Mamish, S., Al-Haleem, M.A. (2004) Determination of natural radioactivity in Euphrates river, J. Radioanal. Nucl. Chem. 261, 349-355. CrossRef
Bikit, I., Varga, E., Conkic, Lj., Slivka, J., Mrda, D., Curcic, S., Zikic-Todorovic, N., Veskovic, M. (2005) Radioactivity of the Bega sediment - case study of a contaminated canal, Appl. Radiat. Isot. 63, 261-266. CrossRef
Bikit, I., Slivka, J., Veskovic, M., Varga, E., Zikic-Todorovic, N., Mrda, D., Forkapic, S. (2006) Measurement of Danube Sediment radioactivity in Serbia and Montenegro using gamma ray spectrometry, Radiat. Meas. 41, 477- 481. CrossRef
Bolivar, J.P., Garcia-Tenorio, R., Mas, J.L., Vaca, F. (2002) Radioactive impact in Sediments from an estuarine system affected by industrial wastes releases, Environ. Intern. 27, 639-645. CrossRef
Chiozzi P., De Felice P., Fazio A., Pasquale V., Verdoya. M. (2000). Laboratory application of NaI(Tl) g–ray spectrometry to studies of natural radioactivity in geophysics, Appl. Radiat. Isot. 53, 127-132. CrossRef
El-Gamal, A., Nasr, S., El-Taher, A. (2007) Study of spatial distribution of natural radioactivity in the upper Egypt Nile River sediments, Radiat. Meas. 42, 457-465. CrossRef
El-Mamoney, M.H., Khater, A.E.M. (2004) Environmental characterization and radio-ecological impacts of non-nuclear industries on the Red sea coast, J. Environ. Radioact. 73, 151-168. CrossRef
Farai, I.P., Ademola, J.A. (2005) Radium equivalent activity concentrations in concrete building blocks in eight cities in southwestern Nigeria, J. Environ. Radioact. 79, 119-125. CrossRef
Farai, I.P., Jibiri, N.N. (2000) Terrestrial gamma radiation dose level in Ibadan, Nigeria, Nig. J. Phys. 34, 195-199.
Fasasi, M.K., Tchokossa, P., Ojo, J.O., Balogun, F.A. (1999) Occurrence of natural radionuclides and fallout cesium-137 in dry season agricultural land of Southwestern Nigeria, J. Radioanal. Nucl. Chem. 240, 949-952. CrossRef
Ibrahiem, M.N., Shawky, S., Amer, H.A. (1995) Radioactivity levels in lake Nasser Sediments, Appl. Radiat. Isot. 46, 297-299.
IAEA (2003a) International Atomic Energy Agency, Collection and preparation of bottom sediment samples for analysis of radionuclides and trace elements, IAEA-TECDOC-1360, IAEA, Vienna, Austria.
IAEA (2003b) International Atomic Energy Agency, Guidelines for radioelement mapping using gamma ray spectrometry data, IAEA-TECDOC-1363, IAEA, Vienna, Austria.
Isinkaye, M.O., Faweya, E.B. (2006) Occurrence of natural radionuclides in refuse dump sites within the city of Ado-Ekiti, southwest Nigeria, Centr. Eur. J. Occ. Environ. Med. (CEJOEM) 12, 9-14.
Khater, A.E.M., Ebaid, Y.Y., El-Mongy, S.A. (2005) Distribution pattern of natural radionuclides in lake Nasser bottom sediments, Intern. Congr. Ser. 1276, 405-406. CrossRef
Papaefthymiou, H., Papatheodorou, G., Moustakli, A., Christodoulou, D., Geraga, M. (2007) Natural radionuclides and 137Cs distributions and their relationship with sedimentological processes in Patras Harbour, Greece, J. Environ. Radioact. 94, 55-74 CrossRef
Papatheodorou, G., Papaefthymiou, H., Maratou, A., Ferentinos, G. (2005) Natural radionuclides in bauxitic tailings (red-mud) in the Gulf of Corinth, Greece, Radioprotection 40, 549-555. CrossRef
Saad, H.R., Al-Azmi, D. (2002) Radioactivity concentration in sediments and their correlation to the coastal structure in Kuwait, Appl. Radiat. Isot. 56, 991-997. CrossRef
Sam, A.K., Ahmad, M.M.O., El-Khangi, F.A., El-Nigumi, Y.O., Holm, E. (1998) Radioactivity in the Red Sea coastal environment of Sudan, Mar. Pollution Bull. 36, 19-26 . CrossRef
Singh, S., Singh, B., Kumar, A. (2003) Natural radioactivity measurements in soil samples from Hamirpur district, Himachal Pradesh, India Radiat. Meas. 36, 547-549. CrossRef
Turhan S., Gunduz Lu (2007) Determination of specific activity of 226Ra, 232Th and 40K for Assessment radiation hazards from Turkish pumice samples, J. Environ. Radioact. DOI: 10.1016/j.jenvrad.2007.08.022. CrossRef
UNSCEAR (1982) United Nations Scientific Committee on Effects of Atomic Radiation, Sources and biological effects of ionizing radiation. United Nations, New York.
USDOE (1992) United State Departments of Energy: Procedure Manual 27th Ed. (revised) Environmental Measurement Laboratory HASL-300 P4.5.29.
USEPA (2007) United State Environmental Protection Agency. Technologically Enhanced Naturally Occurring Materials (TENORM): Drinking water treatment wastes, available at http://www.epa.gov/radiation/tenorm/drinking-water.html.
Xinwei, L., Xiaolan, Z. (2006) Measurement of natural radioactivity in sand samples collected from the Baoji Weihe sands park, China, Environ. Geol. 50, 977-982. CrossRef
Xinwei, L., Xiaolan, Z., Fengling, W. (2008) Natural radioactivity in sediment of Wei River, China, Environ. Geol. 53, 1483-1489.