重庆市建筑材料放射性水平分析

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²²⁶Ra、²³²Th、⁴⁰K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。

Analysis of the radionactivity level in building materials in Chongqing City

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 statistically 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 conforms to the national standard.