双滤膜法测氡中湿度影响的校正  

Modification to the Effect of Water Vapor on Rn in Two filter Method

作　　者：韩国胜[1] 李晓戈[1] 王庆恒[1] 

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《辐射防护通讯》1999年第6期26-28,共3页Radiation Protection Bulletin

摘　　要：当相对湿度小于20%时,湿度变化对双滤膜法测氡的影响较大。本文根据氡子体的中和作用机理,导出了湿度和RaA扩散系数的函数关系,进而得到双滤膜法测氡的湿度校正。校正后结果的相对误差不大于3%。The effect of water vapor is important in two filter method when relative humidity is less than 20%. According to neutralization mechanism of Radon progeny RaA.The function between water vapor and RaA diffusion coefficient is deduced.Thus the method does not vary with relative humidity. The relative error of the results by modification is no more than 3%.

关 键 词：双滤膜法 湿度 扩散系数 氡浓度测量 空气 校正 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]