IN—SITU MEASUREMENTS OF RADON EXHALATION RATE FROM BUILDING SURFACE IN HONG KONG

被引：0
|
作者：
余君岳
关祖杰
杨健明
M.J.Stokes
机构：
[1] City Polytechnic of Hong Kong
[2] Zhongshan University Guangzhou 510275
来源：
NuclearScienceandTechniques | 1993年 / 03期
关键词：
Charcoal canisters Radon exhalation rate Building surfaces Building materials;
D O I：
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中图分类号：
学科分类号：
摘要：
EPA-standardized activated charcoal canisters were used to collect radon exhaled from building surfaces and analyzed using γ-spectroscopy to obtain the radon exhalation rates. More than 120 samples were analyzed in more than 10 buildings situated in different areas of Hong Kong. Variations were identified in the exhalation rates at different levels in a building, for different covering materials and for the presence of cracks in walls. The radon exhalation rate from the most common concrete walls and covering materials was found to be approximately 13 mBq·m·s. This may be the cause of a relatively high indoor radon concentration in Hong Kong.
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页码：176 / 180
页数：5
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