Uranium and radon levels in groundwater of the Goesan area, Korea
Abstract
Uranium and radon levels were measured in 200 groundwater samples collected from the Goesan area known as having 5 lithology (Ogcheon meta-sandy rock zone (Og1), Ogcheon lower phyllite zone (Og2), Ogcheon pebble bearing phyllite zone (Og3), Jurassic granite (Jgr), Cretaceous granite (Kgr)). The equivalent uranium concentrations (e(U)) from 200 rocks near sampled wells were measured using portable gamma spectrometry. Higher median value of e(U) (8.2 mg/kg) was found on Kgr outcrops. The uranium level in groundwater of the area ranged from 0.01 to 293.0 ㎍/L with a median value of 0.87 ㎍/L. The measured radon levels range from 0.90 to 7,218.7 Bq/L with the median value of 54.3 Bq/L. The uranium and radon concentrations were high in the samples from the Kgr (median of 4.74 ㎍/L and 390.0 Bq/L) and low samples from the Og1, Og2, and Og3 (median of 0.35∼0.74 ㎍/L and 20.0∼58.8 Bq/L). The percentage of total samples having uranium level above 30 ㎍/L and and radon level above 148 Bq/L of Kgr is 20.7% and 69.0%, reflecting additional survey on the Kgr area is needed.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.H13I1854C
- Keywords:
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- 1828 Groundwater hydraulics;
- HYDROLOGYDE: 1829 Groundwater hydrology;
- HYDROLOGYDE: 1831 Groundwater quality;
- HYDROLOGYDE: 1847 Modeling;
- HYDROLOGY