%0 Journal Article
%T Assessment of Radioactivity of Some Surface Soils in Gboko Local Government Area of Benue State and Health Implications, North Central Nigeria
%A Dalton T. Ayaakaa
%A E. U. Utah
%A T. Sombo
%J Asian Journal of Engineering and Technology
%D 2016
%X The activity concentrations of some radionuclides in soil samples were collected from10 locations in Gboko local government of Benue State have been determined using the Gamma ray Spectroscopy£¿ (Model No: 3M3/3). The soil activity ranges from 58.88 to 64.49Bq/Kg for 40K, 3.33 to 5.31Bq/Kg for 238U and 4.66 to 8.25Bq/Kg for 232Th respectively for the urban areas. In the rural areas, the activity concentration ranges from 55.42 to 66.26Bq/Kg for 40K, 3.77 to 5.55Bq/Kg for 238U and 4.21 to 10.02Bq/Kg for 232Th respectively. The mean absorbed dose rate in air ranges from 6.78nGy/h in Gboko ¨C East to 9.37nGy/h in Mkar - Hill while the annual effective dose for the same areas varied from 0.01mSv/y in three sites to 0.01mSv/y in Mkar - Hill. The estimated absorbed dose rate in air varied from 6.73nGy/h in BCC to 10.28nGy/h in Gboko ¨C Poly with annual absorbed dose of 0.01mSv/y in BCC to 0.03mSv/y in Ape - Inumbu. The results showed that, the annual effective dose rate is much lower than 0.1mSv/y maximum permissible limit recommended for humans by WHO, (2009). It is also lower than the safe limit of 0.07mSv/y permitted by UNSCEAR,( 2009) for individual members of the public. This reach work indicated that the samples soil may have not been impacted radio logically.
%K [soil
%K background radiation
%K evaluation
%K doses and health implication]
%U https://www.ajouronline.com/index.php/AJET/article/view/3770