广西建筑材料市场花岗岩放射性水平调查与评价  

RESEARCH AND EVALUATION OF GRANITE'S RADIOACTIVE LEVELS FROM BUILDING MATERIALS MARKET IN GUANGXI

作　　者：罗平 刘守廷 莫达松 蒋天成 苏云鹏 梁勇 

机构地区：[1]广西分析测试研究中心,南宁530022

出　　处：《化学分析计量》2011年第5期82-85,共4页Chemical Analysis And Meterage

基　　金：广西科学研究与技术开发计划项目(桂科攻0815004-2-9);广西壮族自治区直属公益性科研院所基本科研业务费专项项目(2009ACZ03)

摘　　要：对广西5个城市建筑装修材料市场的各种花岗岩石材进行抽样,共抽取了128个花岗岩石材样品,用低本底多道γ能谱仪测定其放射性核素226Ra、232Th、40K的放射性比活度、内照射指数和外照射指数,并据此进行分类,其中A类装饰装修材料样品为115个,占89.8%;B类装饰装修材料样品为11个,占8.6%;C类装饰装修材料样品为2个,占1.6%。调查结果表明,绝大部分花岗岩石材是安全的,可直接用于居家室内装修,但也有约10%的花岗岩石材不能用于居家室内装修。128 samples of granites of decorative building materials from 5 cities in Guangxi were gathered, and the parameters such as specific activity, internal exposure index and external exposure index of 226 Ra, 232 Th, 4~K were measured by gamma spectrome- ter. According to measured results, level A was 115 samples accounting for 89.8% , level B was 11 samples accounting for 8.6% , level C were 2 samples accounting for 1.6%. The analysis result showed that mostly granites were safe which can be directly used for interior decoration, but about 10% granites were unsafe.

关 键 词：装修材料 花岗岩 放射性 比活度 内照射指数 外照射指数 

分 类 号：TU111.24[建筑科学—建筑理论]