摘要
使用RAD7测氡仪对重庆市主城区人口密集区室外氡浓度水平进行24小时连续监测,并估算居民吸入氡子体所产生的年有效剂量。结果表明,重庆市主城九区氡浓度范围0-58.1Bq/m3,平均值14.9±9.9Bq/m3,年有效剂量0.04mSv,与国内外氡浓度水平一致;24小时连续监测数据结论,重庆市主城区室外一昼夜中氡浓度变化呈起伏规律的波浪型,其拟合的曲线变化趋势基本一致,整体显示,上午氡浓度略高于下午。
In 24 hours, using RAD7 emanometer to continuously monitor the outdoor radon concentration levels of the densely populated areas in we can estimate the annual effective dose of the inhalation of radon daughters. The result shows that in main districts of Chongqing City, the radon concentration ranges 0-58. 1 Bq/m^3 and the mean is 14.9± 9.9 Bq/ m^3 , the annual effective dose is 0.04mSv, which is unchanged from the level of radon concentration at home and abroad. The data of 24-hour continuously monitor shows that in the downtown of Chongqing City, the changing trend of outdoor radon concentrations in 24 hour approaches the undulating wave type, the fitting curves are basically the same trend and on the whole the radon concentration in the morining slightly higher than that in the afternoon.
出处
《三峡环境与生态》
2010年第6期35-38,共4页
Environment and Ecology in the Three Gorges
关键词
室外氡
变化情况
评价
outdoor radon concentration changing situation estimate
