Determination of thoron equilibrium factor from simultaneous long-term thoron and its progeny measurements
Determination of thoron equilibrium factor from simultaneous long-term thoron and its progeny measurements
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DOI：
10.1093/rpd/ncr228
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发表时间：
2012-04-01
影响因子：
1
通讯作者：
Tokonami, Shinji
中科院分区：
文献类型：
--
作者：
Chen, Jing;Moir, Deborah;Tokonami, Shinji
用3个月的同时测量的109个家庭的最低层的钍射气及其子体浓度，钍射气平衡因子的几何平均数（GM）被确定为0.019的几何标准差（GSD）为3.63。结合对138户居民的研究结果，确定了钍射气平衡因子的GM为0.022，GSD为3.02。结果表明，联合国气候变化委员会推荐的钍射气F值为0.02，对加拿大受测家庭是合理的。
With 3-month simultaneous measurements of thoron and its progeny concentrations in the lowest floors of 109 homes, the geometric mean (GM) of thoron equilibrium factor was determined to be 0.019 with a geometric standard deviation (GSD) of 3.63. Combined with the analysis from results obtained from a previous study in 138 homes, the GM of thoron equilibrium factor was determined to be 0.022 with a GSD of 3.02. The results indicate that the F value of 0.02 for thoron recommended by UNSCEAR is a reasonable value for those Canadian homes tested.