重庆市建筑材料放射性水平分析  

Analysis of the radionactivity level in building materials in Chongqing City

作　　者：黄强[1] 叶成[1] 张燕[1] HUANG Qiang;YE Cheng;ZHANG Yan(Chongqing Center for Disease Control and Prevention,Chongqing 400042 Chin)

机构地区：[1]重庆市疾病预防控制中心,重庆400042

出　　处：《中国辐射卫生》2018年第2期158-160,共3页Chinese Journal of Radiological Health

摘　　要：目的测量重庆市建筑材料的放射性水平,为重庆市建筑材料的产销和使用提供科学的数据支持。方法对重庆市辖区内2014年至2016年共三年内191个建筑材料样品的^(226)Ra、^(232)Th、^(40)K测量结果和内、外照射指数计算结果进行统计分析。结果样品合格率96.4%,说明绝大多数的建筑材料放射性水平都低于国家标准限值。结论重庆市绝大部分建筑材料的放射性水平符合国家标准。Objective To measure the radioactivity level in building materials in Chongqing and to provide scientific data for producing and utilizing the building materials in Chongqing. Methods All of the results on 226Ra, 232Th and 40K contents as well as the internal and external exposure index for 191 building materials collected from 2014 to 2016 in Chongqing are statis- tically analyzed. Results The qualified rate of samples was 96.4% , the levels of radioactivity in most building materials in Chongqing were below the national standard. Conclusion The radioactivity level of most building materials in Chongqing con- forms to the national standard.

关 键 词：建筑材料 内照射指数 外照射指数 

分 类 号：R144[医药卫生—公共卫生与预防医学]