Affiliation:
1. Department of Studies in Physics, University of Mysore, Mysuru, Karnataka, India
Abstract
Abstract
Systematic studies on natural radioactivity in the groundwater of Kodagu district, India were carried out. LED fluorimetric technique to measure uranium activity and emanometric technique to measure 222Rn activity in groundwater samples were used. The concentration of U and 222Rn in the water samples was observed to vary from 0.44 to 8.81 μg L−l with a geometric mean of 2.04 μg L−l and 1.54 to 9.61 Bq L−1 with a geometric mean of 3.59 Bq L−1, respectively. The estimated concentrations of uranium and radon in groundwater were within the recommended standard limits. The radiation dose due to U and 222Rn in groundwater was estimated and the total dose due to these radionuclides was found to vary from 4.51 to 30.28 μSv y−1 which was below the prescribed safe limit of 0.1 mSv y−1 by the WHO.