Potential of High Thoron Exposure in China.
- 1 January 2000
- journal article
- Published by Taylor & Francis Ltd in Journal of Nuclear Science and Technology
- Vol. 37 (8), 716-719
- https://doi.org/10.3327/jnst.37.716
Abstract
Compared with radon (222Rn) and its progeny, thoron (220Rn) and its progeny have not been well studied in the natural radiation fields. In this paper, some important factors (232Th content in soil and building material as well as building structure) relating to the level of indoor thoron and its progeny in China are reviewed. Limited results of small-scale surveys are also cited. The facts indicate that the public exposure from the inhalation of thoron progeny may be higher than the representative value in the UNSCEAR 1993 report, and thoron and its progeny may be a significant indoor pollutant in some regions or specific dwellings in China.Keywords
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