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- Title
Volumetric Variations of Indoor Radon and Thoron.
- Authors
Sathish, L.; Nagaraja, K.; Ramanna, H.; Sundareshan, S.
- Abstract
The volumetric variations of indoor radon and thoron were measured in rooms ranging in volume from 30-310 m in different dwellings at various locations in Bangalore, India. The rooms selected were similar in quality of construction, age, type of walls, and type of floor. Twin cup plastic track detectors were installed in the rooms of 42 dwellings to record indoor Rn and Rn levels. Higher concentrations were observed in rooms with lower volumes than in rooms with higher volumes. The Rn and Rn concentrations in the dwellings ranged from 4.0-93.0 Bq m, whereas the concentrations of their daughter products ranged from 0.01-2.5 mWL. When the room volume increased tenfold, the concentration of Rn reduced by 23% and that of Rn reduced by 13%, provided all other conditions remained the same. The concentrations did not increase linearly with the volumes of the rooms. The annual effective exposure dose rate because of Rn, Rn and their daughter products ranged from 0.1-0.4 mSv year with a mean of 0.2 ± 0.1 mSv year.
- Subjects
BENGALURU (India); INDIA; THORON; RADON; DWELLINGS; GASES
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2011, Vol 36, Issue 4, p671
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-011-0053-9