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 71
- Downloads 0
Evaluation of Heavy Metal Contamination of Soils alongside Awka- Enugu Road, Southeastern Nigeria
Fourteen top soil samples were collected from old Awka-Enugu road passing through Obioma, Nsude, Ngwo and Abor communities. Samples were taken from a depth of 10-15cm after making a hole with a pick axe. Total concentrat...
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...
Evaluation of the Fertility Status of the Soils under Coffee Cultivation in Moshi Rural District, Kilimanjaro Region, Tanzania
Aims: To study the causes of the decline in coffee production in Moshi Rural District, Kilimanjaro Region, Tanzania through evaluating the fertility status of the soils under coffee cultivation. Study Design: Soils and l...
Inventory and Impact of Dominant Fishing Gear and Method in Eleyele Lake, Oyo State, Nigeria
Gill nets fishery are potentially selective and therefore use as a sampling gear if mesh sizes are rightly chosen in order to conserve the young and developing fishes. Precautionary approach towards Conserving and sustai...
Effects of Anthropogenic Activities on Okoklo Forest Reserve in Benue State, Nigeria
Developing countries including Nigeria are saddled with problems emanating from environmental deterioration which has great impact on the forests. This study investigated the anthropogenic activities in Okoklo Forest Res...