Abstract
The radon concentration has been determined in 27 drinking water samples of Hassan district and was estimated by using emanometry technique and physicochemical parameters were estimated using standard techniques. The 222Rn concentrations in water are varying from 0.85 ± 0.2 to 60.74 ± 2.5 Bq l−1 with an average value of 26.5 ± 1.65 Bq l−1. This study reveals that 66 % of the drinking water samples have radon concentration level in excess of the EPA recommended maximum contamination level of 11.1 Bq l−1. There is no significant correlation noted between radon concentration and physicochemical parameters. The mean annual effective ingestion doses received from all samples are lower than 0.1 mSv y−1.
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Acknowledgments
The authors would like to express their sincere thanks to Department of physics, Kuvempu University for providing an instrumentation facility to carry out the research work and Dr M. N. Jagannathappa, professor of Geology, Malnad Engineering college, Hassan, for his guidance.
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Srinivasa, E., Rangaswamy, D.R. & Sannappa, J. Determination of radon activity concentration in drinking water and evaluation of the annual effective dose in Hassan district, Karnataka state, India. J Radioanal Nucl Chem 305, 665–673 (2015). https://doi.org/10.1007/s10967-015-4034-4
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DOI: https://doi.org/10.1007/s10967-015-4034-4