Implications of variability in Indoor radon/thoron levels: a study of dwellings in Haryana, India
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The indoor radon and thoron variability with building materials, season, and tropical region are important, while calculating the inhalation dose. In present work, the results of indoor radon and thoron concentration carried out by pin-hole based dosimeters in five well-populated districts of Haryana, India are reported. The results showed that the indoor radon and thoron concentration varied from 10 to 82 Bq/m3 and 7 to 180 Bq/m3, respectively. The variability of indoor thoron concentration in different seasons has random trends due to different ventilation and short half-life. The radon concentration in the dwellings was lower than the limits (100 Bq/m3) recommended by World Health Organization and worldwide average (40 Bq/m3). The first results of indoor radon and thoron by pin-hole based radon/thoron discriminating dosimeter in this study area are presented.
KeywordsRadon–Thoron variability Pin-hole based dosimeters Building materials
The authors are thankful to Board of Research in Nuclear Science (BRNS), Department of Atomic Energy, Mumbai, India for providing the funds in form of major research project for the present study. The co-operation received from the dwellers of study area is also thankfully acknowledged.
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