摘要
目的 调查乐山装饰建材的放射性水平 ,估算其用于居室装饰所致居民剂量。 方法 在生产厂家抽取了具代表性的 9个品牌 ,按国家标准推荐的方法采样。用低本底多道γ谱法测定其放射性核素2 2 6Ra、2 3 2 Th、40 K含量。 结果 按《建筑材料放射性核素限量》标准对装饰建材放射性水平大小分类 ,本次调查的 5 9个样本均为A类。装饰建材中抛光地砖、釉面砖的放射性水平高于传统建材 ,所致居民的年有效剂量当量附加值也有所增加。
Objective To survey the radioactivity of decorative building materials and its radiation dose to the residents in Leshan. Methods Draw 9 representative brand of the products by recommended national standard. The contents of 226 Ra、 232 Th and 40 K by low background and multichannel Gammas Pecteomety Radiation dose to room residents were estimated. Result The 59 samples are all of A class according to Limit of radionuclids in building materials. The radioactive level of polishing brick, glazd tiles were higher than that of traditional building materials,causing annual effective dose added values of equivalent of resident to increase to some extent. Conclusion The radioactive level of decorative building materials produced from Leshan is close to safety level.
出处
《实用预防医学》
CAS
2003年第6期886-888,共3页
Practical Preventive Medicine
关键词
装饰建材
放射性水平
有效剂量当量
Decorative building materials
Radioactive level
Effective dose equivalent
