RAD7测氡仪测量氡浓度的影响因素——北京市室内氡测量与分析  

The Factors Influencing the Accuracy of Radon Concentration Using RAD7 Radon Minitor Measurement and Analysis of Indoor Radon in Beijing

作　　者：刘智慧 马国学[1] 曾利萍[1] 宋福祥[1] 刘庆云[1] 王毅[1] 李鹏宇 

机构地区：[1]北京市辐射安全技术中心,北京100089

出　　处：《中国辐射卫生》2017年第3期348-350,356,共4页Chinese Journal of Radiological Health

摘　　要：目的寻找RAD7测氡仪测量中的影响因素。探讨RAD7测量的不确定度。方法通过北京市历年测量数据,将3台RAD7测氡仪放置在同一场所及设置不同的测量条件,如:采样测量周期时间、循环次数,湿度、气压等,分析测量的影响因素及数据的不确定度。结果测量周期≥30分,湿度≤10%才能有效减少误差;氡浓度有日变化、季节变化规律。结论 RAD7连续氡浓度检测仪灵敏度高,但影响测量结果的因素多,做好质量控制,才能确保测量数据的准确。Objective To find out the factors influencing RAD7 radon monitor- working, and discuss the measurement of random of RAD7 measuring has been discussed in this paper. Methods This paper demonstrates the uncertainty of data and influence factors of measurement by analyzing data of Beijing over years and data from three RAD7 radon measurements in the same place with different parameters, including sampling cycle time, cycle number, humidity, air pressure and other factors. Results Measuring cycle time ≥ 30 minutes and humidity ≤ 10% can effectively reduce the deviation. The daily variation and seasonal variation of radon concentration were observed. Conclusion RAD7 continuous radon concentration detector is of high sensitivity, which has multiple factors that affect the measurement results, can do a good job of quality control to ensure accurate measurement data.

关 键 词：RAD7测氡仪 测量 数据 比对 不确定度 

分 类 号：TL814[核科学技术—核技术及应用]