PM10 emission factors for non-exhaust particles generated by road traffic in an urban street canyon and along a freeway in Switzerland
PM10 emission factors for non-exhaust particles generated by road traffic in an urban street canyon and along a freeway in Switzerland
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DOI：
10.1016/j.atmosenv.2010.03.039
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发表时间：
2010-06-01
影响因子：
5
通讯作者：
Gehrig, R.
中科院分区：
文献类型：
--
作者：
Bukowiecki, N.;Lienemann, P.;Gehrig, R.
最近的研究表明，非废气排放对环境空气中与交通相关的PM10负荷有明显的贡献。这些排放物包括刹车磨损、道路磨损、轮胎磨损以及车辆引起的道路积尘再悬浮所产生的颗粒。目前工作的主要范围是确定和量化瑞士两个不同交通制度的路边地点与PM10相关的交通的非排气比例。这两个被调查的地点，一个是交通严重拥堵的城市街道峡谷，另一个是城际高速公路，被认为是中欧的典型。磨粒和再悬浮粉尘的质量贡献主要来自1~10微米的颗粒物，结果表明车辆诱导的道路粉尘再悬浮是主要影响因素。在街道峡谷中，与交通相关的PM10排放(LDV：24+/-8 mg km(-1)车辆(-1)，HDV：498+/-86 mg km(-1)车辆(-1))被归类为21%的刹车磨损，38%的道路扬尘和41%的废气排放。在高速公路上(LDV：50+/-13 mg km(-1)车辆(-1)，HDV：288+/-72 mg km(-1)车辆(-1))，分别贡献了3%的刹车磨损，56%的再悬浮道路粉尘和41%的尾气排放。没有迹象表明轮胎磨损和未损坏的人行道磨损造成的相关影响。(C)2010爱思唯尔有限公司。保留所有权利。
Recent studies have shown clear contributions of non-exhaust emissions to the traffic related PM10 load of the ambient air. These emissions consist of particles produced by abrasion from brakes, road wear, tire wear, as well as vehicle induced resuspension of deposited road dust. The main scope of the presented work was to identify and quantify the non-exhaust fraction of traffic related PM10 for two roadside locations in Switzerland with different traffic regimes. The two investigated locations, an urban street canyon with heavily congested traffic and an interurban freeway, are considered as being typical for Central Europe. Mass-relevant contributions from abrasion particles and resuspended road dust mainly originated from particles in the size range 1-10 mu m. The results showed a major influence of vehicle induced resuspension of road dust. In the street canyon, the traffic related PM10 emissions (LDV: 24 +/- 8 mg km(-1) vehicle(-1), HDV: 498 +/- 86 mg km(-1) vehicle(-1)) were assigned to 21% brake wear, 38% resuspended road dust and 41% exhaust emissions. Along the freeway (LDV: 50 +/- 13 mg km(-1) vehicle(-1), HDV: 288 +/- 72 mg km(-1) vehicle(-1)), respective contributions were 3% brake wear, 56% resuspended road dust and 41% exhaust emissions. There was no indication for relevant contributions from tire wear and abrasion from undamaged pavements. (C) 2010 Elsevier Ltd. All rights reserved.