作　　者： ; ;

机构地区： 中山大学

出　　处： 《辐射防护》 1992年第3期223-228,共6页

摘　　要： 本文报道了香港地区土壤、常用建材及路基体中^(238)U、^(226)Ra、^(232)Th 和^(40)K 含量的测量结果,由此估算了空气γ吸收剂量率和室内氡浓度,并且与初步实测值进行了比较。最后估算出天然本底辐射所致香港居民人均年有效剂量当量为3.24 mSv。 The Natural Radionuclide(^(238)U,^(226)Ra,^(232)Th and ^(40)K)contents in samples of soil,commonlyused building materials and construction materials for roads have been determined in Hong Kong.Fromthe measured radionuclide contents,estimations have been made of the absorbed gamma dose rate in airand indoor Radon concentration.The estimated results have been compared with in-situ measurements.Finally.the average annual individual effective dose equivalent contributed by all kinds of natural back-ground radiations has been estimated of 3.26 mSv for Hong Kong residents.

关 键 词： 天然放射性 剂量 辐射 香港

领　　域： [环境科学与工程]