Zhang Liang, Guo Qiuju
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China.
J Radiol Prot. 2011 Mar;31(1):129-34. doi: 10.1088/0952-4746/31/1/009. Epub 2011 Feb 23.
To investigate the levels and behaviours of the atmospheric radon concentration in Qingdao, a continuous measurement was carried out and recorded hourly over a three-year period from September 2006 to August 2009. Levels and variations were studied on the basis of 16,817 data points, and the trends of diurnal and seasonal variations were also analysed. The average concentration of atmospheric radon over the three years was 5.00 ± 3.01 Bq m(-3). The average diurnal pattern of radon concentration showed that the daily maximum appears in the early morning, and the daily minimum in the late afternoon, which is driven by the atmospheric stability. The annual pattern features a maximum around December and a minimum around June, which correlates with the origin of air mass brought by the monsoon.
为研究青岛地区大气氡浓度水平及变化规律，于2006年9月至2009年8月期间进行了为期三年的连续测量，每小时记录一次数据。基于16817个数据点研究了氡浓度水平及变化情况，并分析了昼夜和季节变化趋势。三年间大气氡的平均浓度为5.00±3.01 Bq m(-3)。氡浓度的日平均变化模式显示，每日最大值出现在清晨，最小值出现在傍晚，这是由大气稳定性驱动的。年变化模式的特点是12月左右出现最大值，6月左右出现最小值，这与季风带来的气团来源有关。
