International Journal of Environmental Sciences

Volume 6 Issue 3 2015- July 2015  Pages: 410- 417 <<Previous    Next>>

Investigation of exposure scenarios associated with outdoor radon activity using RAD7 analyzer

Author Information:

Ravikumar P, Deljo Davis, Somashekar R.K.  - Department of Environmental Science, Bangalore University, Bangalore

ABSTRACT

In the present study, temporal variation in the activity of airborne radon in an ambient air environment near the Dept. of Environmental Science, the Bangalore University campus was recorded at a time intervals of 2 hrs for a period of 8 days, using RAD7 analyzer employing continuous 1-day protocol. Air-borne radon activity ranged from BDL to 17.70 Bq/m3 with a mean value of 5.56 ± 4.38 Bq/m3(hourly-basis) and 5.39 ± 1.48Bq/m3 (day-wise), being less than the EPA (148 Bq/m3) and WHO (100 Bq/m3) prescribed action levels. Major portion (82.76%) of the radon measurements was in the range of 0.0 and 9.0 Bq/m3. An attempt was made to establish annual effective dose to basal cells of the bronchial epithelium due to inhalation of radon and was found to be < 0.40 mSv/y. Due to existence of less ventilation in the indoor environment, indoor radon activity remains higher than the outdoor radon activity, Overall, the health hazards related to radiation from outdoor radon activity are expected to be negligible and relatively safe.  

Keywords: Radon, outdoor, indoor, occupancy, equivalent dose.

DOI:10.6088/ijes.6046

© 2015 Copyright by the authors, licensee Integrated Publishing Association.This is an open access article distributed under the Creative Commons Attribution License (3.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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