Abstract
In the present study, indoor radon (222Rn), thoron (220Rn), radon progeny (214Po) and thoron progeny (212Po) activity concentration have been measured in a region around the National Capital Power Station, Dadri, Uttar Pradesh, India. The mean values of the 222Rn, 220Rn and their progeny in the studied region are found to be 22.1 ± 10.0 Bqm−3, 48.6 ± 13.5 Bqm−3, 8.8 ± 4.8 Bqm−3 and 0.49 ± 0.15Bqm−3 respectively. The annual inhalation dose estimated from the observed concentrations varies from 0.29 ± 0.04 to 2.06 ± 0.121 mSv with a mean value of 0.75 ± 0.32 mSv and is well within the reference level. It has also been observed that 212Po is a significant contributor (= 18.7%) to the total annual inhalation dose. Seasonal variations of 222Rn, 220Rn, and their progeny have also been reported.
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The authors would like to thank Board in Nuclear Science, Mumbai for providing financial assistance (Project Ref. No.: 2013/36/59-BRNS/2468, Dated: 04/12/2013) for this Project.
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Kumar, M., Kumar, P., Agrawal, A. et al. Measurements of 222Rn, 220Rn and their progeny concentrations indoors around a coal/gas-based power plant and estimation of annual inhalation dose to the public. J Radioanal Nucl Chem 326, 65–74 (2020). https://doi.org/10.1007/s10967-020-07289-0
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DOI: https://doi.org/10.1007/s10967-020-07289-0