Background Study of Natural Radioactivity in Soil

Authors

  • T. F. Ediagbonya
  • G. E. Okungbowa
  • O. Titilayo

Abstract

Soils samples from five different locations (Mechanic workshop, Residential, Domestic dumpsite, palm oil factory and Hospital dumpsite) of Okitipupa, town in Okitipupa Local Government Ondo state, Nigeria, were analyzed for radioactive element determination. The samples were analyzed using gamma ray spectrometer. The samples were taken at various depths of 10cm, 20cm, and 30cm using plastic spoon, at designated places. The aim and objective of this study was to determine the level, concentration of natural radioactive elements present and to determine their risk level. K-40, U-238 and Th-232 were found at different concentration at the various locations and depth. The mean concentration of k-40 at residential, hospital, mechanic workshop, dumpsite and palm oil factory are 229.24Bq/kg, 157.55Bq/kg, 197.47Bq/kg, 197.58Bq/kg and 115.17Bq/kg. The mean concentration of Th-232 at residential, hospital, mechanic workshop, dumpsite and palm oil factory are 7.59Bq/kg, 7.73 Bq/kg, 11.25 Bq/kg, 11.35Bq/kg and 7.66Bq/kg. The mean concentration of U-238 at residential, hospital, mechanic workshop, dumpsite and palm oil factory are 7.50Bq/kg, 5.90Bq/kg, 6.84Bq/kg, 15.37Bq/kg and 9.00Bq/kg. These result of the gamma spectrometer shows that the concentration of each of the element in Bq/Kg is very low and well within the UNCEAR 2000 standard. Key words: Soil Radioactivity, Gamma Spectrometer, Depth, Radioisotope

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Published

2020-03-30

How to Cite

Ediagbonya, T. F., Okungbowa, G. E., & Titilayo, O. (2020). Background Study of Natural Radioactivity in Soil. Journal of Chemical Society of Nigeria, 45(2). Retrieved from http://journals.chemsociety.org.ng/index.php/jcsn/article/view/440

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