天然石材产品放射性水平的调查与评价

The Study on Radioactivity of Natural Stone Material Products

目的研究天然石材放射性水平,为规范市场,正确指导市售天然石材产品的合理销售,防止非A类放射性水平的天然石材产品进入居室内装饰提供依据。方法使用FD-71型闪烁辐射仪及γ能谱仪对市售天然石材产品进行放射性水平检测。结果81种天然石材产品的γ放射性水平平均值为3.90nC.kg-1.h-1,其中68种花岗岩的均值为4.16 nC.kg-1.h-1,13种大理石的均值为2.53 nC.kg-1.h-1,花岗岩明显高于大理石。部分样品经放射性核素分析,其分类的结果与现场测定值基本一致。结论黄山红、枫叶红天然石材产品超过国家标准规定的A类控制值,不可用于居室内装饰。

Objective The Study on radioactivity of natural stone materials was designed to get some eoidences for establishing healthy sale - market of stone material products. Methods Uses the FD - 71 twinkle radiometer andr can the spectrometer carry on the radioactive level examination for the market natural stone material product. Results 81 kind of natural stone materialproduct T radioactive water mean vahue is 3.90nC · kg^-1 · h^-1 ,68 kind of granite average value is 4.16 nC · kg^-1· h^-1,13 kind of marble average values is 2.53 nC · kg^-1 · h^-1 ,the granite is higher than the marble obviously. Partial samptes after radionuclide analysis, its classified result with scene determination value basic consistent. Conclusion Huangshan Mountain red. The maple leaf red natural, stone material product surpasses the national standards sfipuation A kind of control value,not available in occupies the interior.