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

作　　者：余君岳 关祖杰 杨健明 M.J.Stokes 

机构地区：[1]City Polytechnic of Hong Kong [2]Zhongshan University, Guangzhou 510275

出　　处：《Nuclear Science and Techniques》1993年第3期176-180,共5页核技术（英文）

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^-2·s^-1. This may be the cause of a relatively high indoor radon concentration in Hong Kong.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^(-2)·s^(-1). This may be the cause of a relatively high indoor radon concentration in Hong Kong.

关 键 词：Charcoal canisters RADON EXHALATION rate BUILDING SURFACES BUILDING materials 

分 类 号：TL[核科学技术]