Mose D G, Mushrush G W, Chrosniak C E
Center of Basic and Applied Science, George Mason University, Fairfax, Virginia.
J Toxicol Environ Health. 1991 Jun;33(2):115-30. doi: 10.1080/15287399109531512.
The concentrations of indoor radon in the basements of homes located in northern Virginia average about 1.4 times the first-floor radon concentrations. Basement indoor radon concentrations exhibit seasonal variations that can be related to home use patterns of the occupants. Little indoor radon difference was seen between homes that have concrete block basement walls and poured concrete basement walls, but homes that use oil or gas furnaces for heating have approximately 25% lower indoor radon than homes that use electrical heating systems. Particular geological units seem to be associated with elevated indoor radon concentrations, and several units are associated with indoor radon concentrations that exceed 4 pCi/l (the U.S. Environmental Agency "action level") at some time in more than 40% of the homes. Comparative studies between indoor radon and total gamma aeroradioactivity show that aeroradioactivity can be accurately used to estimate community radon hazards. When combined with information about the home heating system, geology and aeroradioactivity can be used to identify problem homes.
位于弗吉尼亚州北部的家庭地下室中，室内氡浓度平均约为一楼氡浓度的1.4倍。地下室室内氡浓度呈现季节性变化，这可能与居住者的家庭使用模式有关。在有混凝土砌块地下室墙壁和浇筑混凝土地下室墙壁的房屋之间，室内氡差异不大，但使用燃油或燃气炉供暖的房屋室内氡含量比使用电加热系统的房屋低约25%。特定的地质单元似乎与室内氡浓度升高有关，在超过40%的房屋中，有几个单元在某些时候与超过4皮居里/升（美国环境保护局“行动水平”）的室内氡浓度有关。室内氡与总伽马空气放射性之间的比较研究表明，空气放射性可准确用于估计社区氡危害。结合有关家庭供暖系统的信息，地质和空气放射性可用于识别问题房屋。
