Riley Erin A, Gould Timothy, Hartin Kris, Fruin Scott A, Simpson Christopher D, Yost Michael G, Larson Timothy
University of Washington Department of Environmental and Occupational Health Sciences, Box 357234, Seattle, WA, 98198. +1 (206) 543-3222.
University of Washington Department of Civil & Environmental Engineering, Box 352700 Seattle, WA, 98198. +1 (206) 543-6815.
Atmos Environ (1994). 2016 Aug;139:20-29. doi: 10.1016/j.atmosenv.2016.05.016. Epub 2016 May 10.
Ultrafine particle number (UFPN) and size distributions, black carbon, and nitrogen dioxide concentrations were measured downwind of two of the busiest airports in the world, Los Angeles International Airport (LAX) and Hartsfield-Jackson International Airport (ATL - Atlanta, GA) using a mobile monitoring platform. Transects were located between 5 km and 10 km from the ATL and LAX airports. In addition, measurements were taken at 43 additional urban neighborhood locations in each city and on freeways. We found a 3-5 fold increase in UFPN concentrations in transects under the landing approach path to both airports relative to surrounding urban areas with similar ground traffic characteristics. The latter UFPN concentrations measured were distinct in size distributional properties from both freeways and across urban neighborhoods, clearly indicating different sources. Elevated concentrations of Black Carbon (BC) and NO were also observed on airport transects, and the corresponding pattern of elevated BC was consistent with the observed excess UFPN concentrations relative to other urban locations.
使用移动监测平台，在世界上最繁忙的两个机场——洛杉矶国际机场（LAX）和哈茨菲尔德-杰克逊国际机场（ATL——佐治亚州亚特兰大）的下风向测量了超细颗粒物数量（UFPN）及其粒径分布、黑碳和二氧化氮浓度。样带位于距ATL和LAX机场5公里至10公里之间。此外，还在每个城市的43个城市社区地点和高速公路上进行了测量。我们发现，相对于具有相似地面交通特征的周边城市地区，两个机场着陆进近路径下方样带中的UFPN浓度增加了3至5倍。所测量的后一种UFPN浓度在粒径分布特性上与高速公路和城市社区均不同，清楚地表明了不同的来源。在机场样带上还观察到黑碳（BC）和一氧化氮浓度升高，并且BC升高的相应模式与相对于其他城市地点观察到的UFPN浓度过高一致。
