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Geogenic radiological impact assessment of soil samples collected from parts of Sagamu Southwestern Nigeria

Oyeyemi , Kehinde D. and Aizebeokhai, A. P. (2015) Geogenic radiological impact assessment of soil samples collected from parts of Sagamu Southwestern Nigeria. Indian Journal of Natural Sciences , 6 (33). pp. 10299-10308.

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Abstract

This study is an assessment of the radionuclide concentration level and radiological hazards in soils from Sagamu, Ogun state Nigeria. Soil samples collected from 15 locations were analysed using a 76 x 76 mm Sodium Iodide [NaI (TI)] detector crystal. The estimated average absorbed dose rates, annual effective dose, gamma radiation index and excess lifetime cancer risk of the soil samples were 42.07 nGy/h, 51.59 μSvy-1 0.66and 0.181μSvy-1 respectively. Mean radium equivalent activity of 95.4 Bq/Kg was also obtained for the soil samples. The average soil radionuclides activity concentrations in the area of study were within the worldwide range; although at some locations higher values of 226Ra and 232Th activity concentration were observed. The results of the estimated radiological parameters in this study are lower than the International Commission on Radiological Protection (ICRP) maximum permitted limit. Hence, they have no significant radiological health impacts on the environment and the populace.

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QE Geology
R Medicine > RA Public aspects of medicine
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mr. K. D. Oyeyemi
Date Deposited: 25 Feb 2016 14:21
Last Modified: 26 Feb 2016 09:59
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/6135

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