摘要
本文用FD-125型氡钍分析仪以α-射气闪烁法测定了哈密地区建材氡发射系数,其范围值为0～18.7％.氡发射平均系数的高低顺序是土块>普通水泥>花岗石材>红砖>预制构件>沙>石灰.结果表明,建材氡发射系数的高低不仅取决于建材^(226)Ra含量,很大程度上也取决于建材氡发射系数.测定该系数对评价建材所致居民室内氡浓度有一定意义.
The Radon emissive coefficients of building materials in Hami prefecture were determined by α-scintillation method. Their range was 0-18.7%. The coefficients were different among the materi-als in order: sun-dried mud brick > general cement > granite material > red brick > sand > lime. It is related to 226Ra content in the material as well as Ra emissive capacity of the material.
出处
《干旱环境监测》
1992年第3期149-150,190,共2页
Arid Environmental Monitoring
关键词
建筑材料
氡
发射系数
哈密
Building materials
Radon
Emissive coefficient
Hami prefecture
