Estimation of the Contributions of Brake Dust, Tire Wear, and Resuspension to Nonexhaust Traffic Particles Derived from Atmospheric Measurements
Estimation of the Contributions of Brake Dust, Tire Wear, and Resuspension to Nonexhaust Traffic Particles Derived from Atmospheric Measurements
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DOI：
10.1021/es300894r
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发表时间：
2012-06-19
影响因子：
11.4
通讯作者：
Green, David C.
中科院分区：
文献类型：
--
作者：
Harrison, Roy M.;Jones, Alan M.;Green, David C.
在伦敦马里波恩路的一些活动中，同时在摄政公园或北肯辛顿的背景地点收集了空气中颗粒物的大小分级样品。这些样本的分析，使总质量和一些元素的尺寸分布被确定，并已计算出路边增量归因于交通活动所产生的非废气排放。采用一种新的方法，尺寸分布信息和示踪剂元素的结合使用，允许单独估计制动器粉尘，轮胎粉尘和再悬浮颗粒质量的贡献范围为0.9-11.5 μ m的空气动力学直径和平均贡献（+/- s.e.）Marylebone路采样点的再悬浮尘含量为38.1 +/-9.7%，刹车尘含量为55.3 +/-7.0%，轮胎尘含量为10.7 +/-2.3%（占本底以上交通增量中粗颗粒质量的104.1%）。
Size-fractionated samples of airborne particulate matter have been collected in a number of campaigns at Marylebone Road, London and simultaneously at background sites either in Regents Park or at North Kensington. Analysis of these samples has enabled size distributions of total mass and of a number of elements to be determined, and roadside increments attributable to nonexhaust emissions arising from traffic activity have been calculated. Taking a novel approach, the combined use of size distribution information and tracer elements has allowed the separate estimation of the contributions of brake dust, tire dust, and resuspension to particle mass in the range 0.9-11.5 mu m aerodynamic diameter and mean contributions (+/- s.e.) at the Marylebone Road sampling site are estimated as resuspended dust 38.1 +/- 9.7%, brake dust 55.3 +/- 7.0%, and tire dust 10.7 +/- 2.3%, (accounting for a total of 104.1% of coarse particle mass in the traffic increment above background).