关于在建材放射性含量标准中增加氡析出率控制指标的建议  

Suggestions for Inclulsion of Radon Exhalation Control Target in Building Materials Radioactivity Standards

作　　者：刘福东[1] 潘自强[2] 刘森林[1] 张永贵[3] 

机构地区：[1]中国原子能科学研究院,北京102413 [2]中国核工业集团公司科学技术委员会,北京100822 [3]中国建筑材料科学研究总院,北京100024

出　　处：《辐射防护》2010年第2期108-112,130,共6页Radiation Protection

基　　金：国家自然基金资助项目(10775187)

摘　　要：采用高纯锗γ谱仪和活性碳盒法对选取的26个来自不同产地的建筑材料样品中的放射性核素比活度和氡析出率进行了测量。结果表明,建筑材料中镭含量与氡析出率之间并不完全相关。我国现行国家标准"建筑材料放射性核素限量"(GB 6566-2001)中仅以内外照射指数作为控制指标,没有对氡析出率进行控制,而建筑材料中氡析出率与室内氡浓度密切相关。因此建议国家建筑材料放射性核素限量标准中增加氡析出率控制指标。The specific-activity and radon exhalation rate from 26 building material samples from different areas were measured with high pure germanium （HPCe） gamma spectrometer and activated carbon cartridge. It is shown that the radium content is not completely relevant to radon exhalation rate from some building material. The existing national standards on ＂The Limit of Radionuclides in Building Materials＂（GB 6566 - 2001 ） only present internal exposure index as control target but not for radon exhalation rate; in fact, the radon exhalation rate from building materials is closely nearly related to indoor radon concentration. So we suggest that the radon exhalation control target should be included in the national standards on ＂The Limit of Radionuclides in Building Materials＂.

关 键 词：氡析出率 内照射指数 外照射指数 建筑材料 

分 类 号：TU50[建筑科学—建筑技术科学]