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A study on indoor radon, thoron and their progeny level in Mokokchung district of Nagaland, India

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Abstract

Indoor radon, thoron, and their progeny concentrations were measured in Mokokchung district of Nagaland, India over three different seasons by using Direct Radon and Thoron Progeny Sensors and pinhole type radon-thoron discriminating dosimeters. The indoor radon and thoron concentrations were found to vary between 44 ± 6–75 ± 16 Bqm−3 and 25 ± 2–62 ± 49 Bqm−3 while their corresponding progeny concentrations varied between 3.2 ± 2.1–17.3 ± 8.7 Bqm−3 and 0.21 ± 0.06–1.49 ± 0.86 Bqm−3 respectively. Based on the study, it was found that the inhalation dose varied between 0.35 and 1.64 mSvy−1 and are within the recommended values as suggested by ICRP, 2018. The equilibrium factor (E.F) varied from 0.06 to 0.29 for indoor radon and 0.01 to 0.02 for indoor thoron.

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Acknowledgements

The authors are grateful to Board of Research in Nuclear Sciences (BRNS), and staff of RP & AD, BARC, Mumbai, Government of India, for financial support and training. Financial support through the project No. 36(4)/47/2015-BRNS/360/5 dated 31st March, 2016 for carrying out the work is duly acknowledged.

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Authors and Affiliations

  1. Department of Chemistry, Nagaland University, Lumami, 798627, India

    Supongtoshi Jamir, Parimal Chandra Bhomick & Dipak Sinha

  2. Radiological Physics and Advisory Division, BARC, Mumbai, 400085, India

    B. K. Sahoo & Rosaline Mishra

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  1. Supongtoshi Jamir
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Jamir, S., Sahoo, B.K., Mishra, R. et al. A study on indoor radon, thoron and their progeny level in Mokokchung district of Nagaland, India. J Radioanal Nucl Chem 331, 21–30 (2022). https://doi.org/10.1007/s10967-021-08096-x

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