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Radiation Protection Dosimetry Advance Access originally published online on July 17, 2008
Radiation Protection Dosimetry 2008 131(3):385-389; doi:10.1093/rpd/ncn192
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Published by Oxford University Press 2008. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Variation of soil radon concentrations in southern Ontario

J. Chen1,*, J. Ly1, L. Bergman1, J. Wierdsma1 and R. A. Klassen2

1 Radiation Protection Bureau, Health Canada, 775 Brookfield Road, Ottawa, Ontario, Canada K1A 1C1
2 Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, Canada K1A 0E8

* Corresponding author: jing_chen{at}hc-sg.gc.ca

Received April 30, 2008, amended June 23, 2008, accepted June 24, 2008

Radon has been identified as the second leading cause of lung cancer after tobacco smoking. Information on indoor radon concentrations is required to assess the lung cancer burden due to radon exposure. However, radon data in highly populated southern Ontario are very limited. Since radon in soil is believed to be the main source of radon in homes, measurements of soil gas radon concentrations can be used to estimate variations in radon potential of indoor environments. This study reports a transect survey of natural background variation in soil radon levels across southern Ontario. The results indicate that radon risk could be high in some areas of southern Ontario.


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