Assessment of the Radiation Hazard Indices from Terrestrial Radiation in Mining Sites in Benue State, Nigeria
Journal Title: Asian Journal of Environment & Ecology - Year 2017, Vol 2, Issue 4
Abstract
The assessment of the radiation hazard indices of solid minerals and sand in mining sites of Benue State, Nigeria was carried out using well calibrated radalert-50 and 100 meters and a Global Positioning System (Garmin 765). The sites investigated are Lessle (Barite), Gboko (Limestone), Owukpa (Coal) and Akuana (Salt) deposits fields. The mean background radiation ionization exposure rate of 0.019±0.004, 0.019±0.004, 0.014±0.002 and 0.023±0.005 mRh-1 were obtained respectively. The mean of absorbed dose rates estimated for the mining fields are 161.53, 169.40, 120.35 and 201.84 nGy/hr respectively. Estimated values of the annual effective dose equivalent (AEDE) for outdoor exposures 0.25, 0.26, 1.61, and 2.71 mSv/yr respectively while the mean excess lifetime cancer risk calculated for the mine fields values are (0.82, 0.86, 5.33 and 8.94) x 10-3 respectively. The obtained values for background ionizing radiation were higher than the recommended standard limits by ICRP while the AEDE calculated in the entire mine fields are within safe values but the absorbed dose (D) and excess lifetime cancer risk (ELCR) estimated were higher than their world permissible values of 89 nGy/hr and 0.29 x10-3 respectively. The work indicated that there is tendency for the residents near the mining sites to get high radiation doses and could develop radiation-related illness after a long time exposure.
Authors and Affiliations
A. I. Olanrewaju, G. O. Avwiri
Keywords
Related Articles
- EP ID EP338738
- DOI 10.9734/AJEE/2017/33373
- Views 76
- Downloads 0
Sustainable Development Goals on Energy and Environment: Key Issues in Sri Lanka
Aims: The purpose of this study is to investigate the key energy and environmental issues that Sri Lanka is to address under sustainable development agenda of the United Nations. Study Design: This study reviewed relevan...
Microbial Community Profiling of Spent-oil Contaminated Soil in Odukpani, Nigeria
The evaluation of microbiological and heavy metals concentration of oil contaminated soil samples from three different locations, thus; Okurikang, Inuakpa and Creek Town of Odukpani Local Government Area of Cross River S...
Delineation of River Watershed and Stream Network Using ILWIS 3.7.1 Academic
The delineation of watersheds can be carried out manually using topographic maps but these maps are mostly outdated, scarce and incomplete for most parts of Nigeria and may be of different scales for large watersheds tha...
Evaluation of Range Condition and Trend of Ikwe Forest Reserve Igbor, Gwer-East Local Government Area of Benue State, Nigeria
Public concern over biological resources assessment has grown over the decade due to a decline in resources through habitat fragmentation. The study was designed to evaluate the range condition and trend of Ikwe Forest R...
Causes of Deforestation and Its Geological Impacts in Swat District, Khyber Pakhtunkhwa, Pakistan
The most alarming threat to the forest are human being, their actions results transformation of forest lands representing one of the excessive forces in worldwide ecological change and one of the great drivers of biodive...