Saiway George F N, Mushrush George W, Mose Douglas G
Department of Chemistry and Biochemistry, George Mason University, Fairfax, Virginia 22030, USA.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2006;41(4):613-20. doi: 10.1080/10934520600574880.
In northern Virginia, significant indoor radon differences occur due to soil chemistry, home heating system and precipitation. Homes constructed on soil over some geological units had indoor radon that exceeded the United States Environmental Protection Agency Maximum Concentration Level of 4 picoCuries/liter for home buyers. Seasons with more precipitation tend to have higher average indoor radon. Homes with electrical heating systems averaged almost 50% higher indoor radon than homes with gas or oil furnaces. Comparisons between indoor radon and soil radon show a positive correlation, suggesting that soil aero radioactivity measurements can delineate areas with a high potential for indoor radon.
在弗吉尼亚州北部，由于土壤化学、家庭供暖系统和降水等因素，室内氡含量存在显著差异。建于某些地质单元土壤之上的房屋，其室内氡含量超过了美国环境保护局规定的购房者室内氡最大浓度水平，即4皮居里/升。降水较多的季节往往室内氡平均含量较高。使用电供暖系统的房屋室内氡平均含量比使用燃气或燃油炉的房屋高出近50%。室内氡与土壤氡的比较显示出正相关关系，这表明土壤空气放射性测量可以划定室内氡潜在含量高的区域。
