Abstract：
:Most commercially based activated charcoal radon collectors were designed for use in indoor environments. However, at present, they are often used for research in radon surveys in unique environments, such as in the bathrooms, underground areas, mines, caves and tunnels. In these environments, the relative humidity would be around 100%, and a change in the sensitivity of cpm(Bq m(-3))(-1)(radon) would occur. For this study, the reduction in the sensitivity of activated charcoal radon collector due to environmental humidity was investigated, and the data correction was discussed. Here, ST-100 (Pico-Rad) was selected as an example of a familiar activated charcoal radon collector. According to our performance test, the humidity of 90% (20 degrees C) resulted in a 15% reduction of the sensitivity for 24 h collection. The ST-100 user should discuss the necessity of data correction by comparing the change of sensitivity with other levels of estimation errors.
journal_name
J Environ Radioactjournal_title
Journal of environmental radioactivityauthors
Iimoto T,Tokonami S,Morishita Y,Kosako Tdoi
10.1016/j.jenvrad.2004.03.037subject
Has Abstractpub_date
2005-01-01 00:00:00pages
69-76issue
1eissn
0265-931Xissn
1879-1700pii
S0265-931X(04)00140-7journal_volume
78pub_type
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