International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2569

Short Communication

Assessment of radioactivity level in bore hole-soil in Nigeria

Omeje C. U.1*, Kareem A. I.1, Onoja M. A.2, Adamu A. M.3 and Ummkulthum S. I.4
  1Department of Science Laboratory Technology, School of Applied Science, Nuhu Bamalli Polytechnic, P. M. B. 1061, Zaria, Kaduna State, Nigeria. 2Department of Physics, Ahmadu Bello University, Zaria, Kaduna State, Nigeria. 3Department of Applied Sciences, Collage of Science and Technology, Kaduna Polytechnic, Kaduna, Nigeria. 4Department of Mathematics, Statistics and Computer Science, Collage of Science and Technology, Kaduna Polytechnic, Kaduna, Nigeria.
Email: [email protected]

  •  Accepted: 19 October 2011
  •  Published: 02 November 2011



Radioactivity level in six soil samples from different boreholes in Zaria, Nigeria was assessed. The presence of 40K, 226Ra and 232Th were analyzed using γ -ray spectrometry with sodium iodide thallium, {NaI(Tl)} detector. Mean specific activity of 1020.4 ± 12.4, 123.1 ± 2.3 and 25.7 ± 2.0Bq/kg for 40K, 226Ra and 232Th, respectively were obtained. The radioactivity level for each location was calculated to ascertain the risk involved in using these boreholes. This radiation index revealed that all the locations are safe except two locations having radioactivity level of approximately 1.02 and 1.30 Bqkg-1,respectively, which are well above the world quoted value of unity. This shows that the concentration levels for these two areas are high and it is therefore recommended that none of these boreholes’ water be consumed in order to avoid unnecessary exposure and absorption of dosage of radiation that will be threatening to life.


Key words: Radioactivity level, borehole-soil, γ-ray.