Miles J C H, Howarth C B, Hunter N
Health Protection Agency, Chilton, Didcot OX11 0RQ, UK.
J Radiol Prot. 2012 Sep;32(3):275-87. doi: 10.1088/0952-4746/32/3/275. Epub 2012 Jul 19.
The patterns of seasonal variation of radon concentrations were measured in 91 homes in five regions of the UK over a period of two years. The results showed that there was no significant difference between the regions in the pattern or magnitude of seasonal variation in radon concentrations. The arithmetic mean variation was found to be close to that found previously in the UK national survey. Differences in the pattern between the two years of the study were not significant. Two-thirds of homes in the study followed the expected pattern of high radon in the winter and low radon in the summer. Most of the rest showed little seasonal variation, and a few showed a reversed seasonal pattern. The study does not provide any clear evidence for the recorded house characteristics having an effect on the seasonal variation in radon concentrations in UK homes, though the statistical power for determining such effects is limited in this study. The magnitude of the seasonal variation varied widely between homes. Analysis of the individual results from the homes showed that because of the wide variation in the amount of seasonal variation, applying seasonal correction factors to the results of three-month measurements can yield only relatively small improvements in the accuracy of estimates of annual mean concentrations.
在两年时间里，对英国五个地区的91户家庭的氡浓度季节性变化模式进行了测量。结果表明，各地区氡浓度季节性变化的模式或幅度没有显著差异。算术平均变化与英国之前的全国性调查结果相近。研究的两年间模式差异不显著。研究中三分之二的家庭呈现出冬季氡含量高、夏季氡含量低的预期模式。其余大多数家庭季节性变化不大，少数家庭呈现出相反的季节性模式。尽管本研究确定此类影响的统计效力有限，但该研究并未提供任何明确证据表明所记录的房屋特征会对英国家庭氡浓度的季节性变化产生影响。家庭之间季节性变化的幅度差异很大。对各家庭的个体结果分析表明，由于季节性变化量差异很大，对三个月测量结果应用季节校正因子只能在年度平均浓度估计的准确性上带来相对较小的提高。
