长沙市一居民小区室区内外环境氡水平调查

The Investigantion of Indoor Rador Concentration in a Community of Changsha

报道了长沙市一居民小区几十间住户室内外环境中氡及其子体浓度,给出了不同类型房屋中不同电离辐射来源的相对贡献,调查结果表明:该小区不同类型住户地下室、平房、楼房内氡的主要来源是土壤和建材中的氡析出,分别占83.77%、59.78%、51.49%.室外空气、室内用水和液化气中的氡对室内氡浓度的贡献相对较少.

The author report the indoor and outdoor concentration of?(^(222)Rn) and it's decay products in tens of houses in a community of Changsha city,and gave the relative contribution of different ?(^(222)Rn) source in different kinds of houses.The results indicate that the main source of the indoor radon in the basements,the single-story houses and the houses of the buildings of two or more stories in this community are?(^(222)Rn) released from the earth and building materials.The rates are 83.77%,59.78% and 51.49% respectively.The indoor radon from outdoor air,the drinking water,and the liquefied gasoline gas are relatively low.