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摘要本文报道了1988年～1989年广西建筑材料中的放射性水平和所致居民剂量的调查结果，用γ能谱和放化分析测定了该地区17种、939个建筑材料样品中的放射性核素水平。结果表明：墙体建筑材料的内、外照射指数以花岗岩、煤渣砖最高，石灰岩、混凝土最低；主要建材中放射性核素含量呈偏态分布；广西混合建材致室内居民的内、外照射有效剂量当量分别为0.26、0.39mSv·a -1；由建筑物所用的材料和材料比例不同，其所致室内剂量不同。

abstractsThe paper describes the survey of radioactivity in building materials and its radiation dose to the residents in Guangxi region in 1988-1989. Seventeen types of building materials, including 939 samples, were measured by NaI (Te) gamma spectrometer and radiochemical analyses. The results showed that, for the indices of internal and external radiation, granite and coal cinder brick had the highest values among building materials of wall while lime stone and concrete had the lowest values. The contents of radionuclides in main building materials had a skew distribution. The effective dose equivalents to indoor residents from internal and external radiation due to mixed building materials were 0.26 and 0.39 mSv/a, respectively. The contributed indoor doses varied with types and ratios of building materials used.