Radiochemical evaluation of groundwater around Mika uranium mineralization and environs
- 作者: Arabi A.1, Daniel A.2, Funtua I.1
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隶属关系:
- Centre for Energy Research and Training
- Department of Geology
- 期: 卷 59, 编号 4 (2017)
- 页面: 434-438
- 栏目: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/224113
- DOI: https://doi.org/10.1134/S1066362217040178
- ID: 224113
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详细
Seventeen groundwater samples around Mika uranium mineralization were collected, and the 222Rn concentrations were measured using a DURRIDGE RAD7 electronic radon detector. The 222Rn concentrations in the groundwater ranged from 2350 to 46200 Bq m–3 with an average of 29 400 Bq m–3. The results show that 76.5% of the groundwater samples collected have 222Rn concentrations far above the US EPA maximum contaminant level (MCL) of 11.1 Bq L–1 (for states without radon monitoring policy and enhanced indoor air programs), and only 23.5% have lower values. On the other hand, all the 222Rn levels were below the MCL of 100 Bq L–1, recommended by EU as the level that warrants consideration of possible remedial actions. Borehole samples show relatively higher 222Rn concentrations than samples collected from open wells. The annual effective dose due to ingestion (Hing) of 222Rn in the groundwater ranged from 0.05 to 0.92 mSv, with an average of 0.59 mSv. These values are within the ICRP recommended reference level of 1 mSv year–1 for the intake of the radionuclide in water by the general public for a prolonged exposure.
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作者简介
A. Arabi
Centre for Energy Research and Training
编辑信件的主要联系方式.
Email: asabdullahi.geo@buk.edu.ng
尼日利亚, Zaria
A. Daniel
Department of Geology
Email: asabdullahi.geo@buk.edu.ng
尼日利亚, Zaria
I. Funtua
Centre for Energy Research and Training
Email: asabdullahi.geo@buk.edu.ng
尼日利亚, Zaria