Traffic induced particle resuspension in Paris: Emission factors and source contributions
Traffic induced particle resuspension in Paris: Emission factors and source contributions
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DOI：
10.1016/j.atmosenv.2016.01.022
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发表时间：
2016-03-01
影响因子：
5
通讯作者：
Sciare, J.
中科院分区：
文献类型：
--
作者：
Amato, F.;Favez, O.;Sciare, J.
考虑到颗粒物在城市空气质量管理中的重要性，以及缺乏关于排放因素和来源贡献的基本信息，了解城市铺面道路颗粒物再悬浮的过程尤为重要。在这项研究中，我们进行了大量的现场测量，量化了巴黎不同类型道路的排放因子，并调查了它们变化的原因以及在巴黎环路一个交通监测点一年中观测到的环境空气PM10的贡献。结果表明，巴黎内路较低的道路粉尘负荷(rd10：0.7-2.2 mg m(-2))和排放因子(5.4-9.0 mg车辆-1公里(-1))之间的一致性，而环路(分别为2.4 mg m(-2)和17 mg车辆-1公里(-1))，这两个参数是独立估计的。环路的较高值可能是由于路面状况较差和重型车辆比例较高造成的。道路磨损、刹车磨损和碳质来源几乎同样占RD10的96%。在位于环路(22万辆/天)的交通监测点，通过受体建模估计，道路粉尘排放对PM10的年平均贡献率为13%(63mug m(-3))，而机动车尾气和磨损之和占47%，导致交通对PM10的贡献率为60%。道路盐碱化是一个次要因素(占年平均值的1%)，冬季也是如此(2%)。(C)2016爱思唯尔有限公司。保留所有权利。
Gaining knowledge on the process of particle resuspension from urban paved roads is of particular importance considering the increasing relevance of this source in urban air quality management and the lack of basic information on emission factors and source contributions. In this study we performed extensive field measurements for the quantification of the emission factors from different types of road in the city of Paris, and investigated the causes of their variability and the contributions to the ambient air PM10 observed across one year at one traffic monitoring site in the ring road of Paris. Results show agreement between lower road dust loadings (RD10: 0.7-2.2 mg m(-2)) and emission factors (5.4-9.0 mg vehicle-1 km(-1)) at inner-roads of Paris, compared to the ring road (2.4 mg m(-2) and 17 mg vehicle-1 km(-1), respectively), where the two parameters are estimated independently. The higher values in the ring road were likely caused by the poor state of pavement and higher share of heavy duty vehicles. Road wear, brake wear and a carbonaceous source, were almost equally responsible for 96% of RD10. At the traffic monitoring site located at the ring road (220,000 vehicle/day), the contributions of road dust emissions were estimated by receptor modeling to be 13% of PM10 on an annual mean (63 mu g m(-3)), while the sum of vehicle exhaust and wear accounted for 47% resulting in a total traffic contribution of 60% of PM10. Road salting resulted to be a minor contributor (1% of annual mean) also in winter time (2%). (C) 2016 Elsevier Ltd. All rights reserved.