在13栋独立的建筑中使用24个独立的通风系统进行测试，以确定与建筑物内臭氧的异质性损失相关的速率常数k。对于实验室办公楼，建议在“线性组合”模型中使用k=0.04 ft³/ft²-min（或0.02 cm³/cm²-sec）的值，以确定防止室内臭氧浓度上升到室外臭氧浓度的某个期望分数以上所需的过滤系数Fo。其他地方进行的试验数据用于确定实验室办公楼内二氧化硫的异源性损失的速率常数。 建议在“线性组合”模型中使用k=0.014 ft³/ft²-min（或0.007 cm³/cm²-秒）的值，以确定防止室内S02浓度上升到室外所需分数以上所需的过滤系数Fo。根据上述试验中获得的数据，设计、建造了一个辅助空气过滤系统（使用九个活性炭过滤器），并运行了3年。该系统仅在室外臭氧浓度超过0.08 ppm时过滤补充气流。在这种操作下，去除臭氧的过滤器寿命大约为3年。 在此期间，室内臭氧浓度从未超过联邦标准。建议在城市地区建造新建筑，以便除了过滤掉补充空气和再循环空气混合物中的灰尘外，还可以选择性地过滤补充空气。此外，建议设计允许在外部空气质量良好时旁通补充空气的选择性过滤器。引用:ASHRAE交易，第87卷，第一部分，伊利诺伊州芝加哥

Tests were conducted with 24 separate ventilation systems present in 13 separate buildings to determine the rate constant, k, associated with the heterogeneous loss of ozone within buildings. For laboratory-office buildings, the value of k = 0.04 ft3/ft2-min (or 0.02 cm3/cm2-sec) is recommended for use in the “linear combination” model to determine the filter factor, Fo, needed to prevent the indoor concentrations of ozone from rising above some desired fraction of those outside.Data from tests conducted elsewhere were used to determine the rate constant for the heter­ogeneous loss of sulfur dioxide within a laboratory-office building. The value of k = 0.014 ft3/ft2-min (or 0.007 cm3/cm2-sec) is recommended for use in the "linear combination" model to determine the filter factor, Fo, needed to prevent the indoor concentrations of S02from rising above some desired fraction of those outside.Based upon the data obtained in the above-mentioned tests, an auxiliary air filtration system (utilizing nine activated charcoal filters) was designed, constructed and operated for a period of 3 yrs. This system filtered the make-up airstream only when the outdoor concentration of ozone rose above 0.08 ppm. The filter life for ozone removal appears to be about 3 yrs under such operation. During this time the indoor concentrations of ozone never exceeded the Federal Standard.It is recommended that new buildings located in urban areas be constructed so that the make-up air be selectively filtered in addition to filtering out the dust in the mixture of make-up plus recirculated air. Furthermore, it is recommended that the design permit the selective filter for the make-up air to be bypassed when the outside air quality is good.