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首页> 外文期刊>Environmental Science & Technology >Gas-Particle Partitioning of Vehicle Emitted Primary Organic Aerosol Measured in a Traffic Tunnel
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Gas-Particle Partitioning of Vehicle Emitted Primary Organic Aerosol Measured in a Traffic Tunnel

机译：在交通隧道中测量的车辆排放的主要有机气溶胶的气体颗粒分配

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摘要

We measured the gas-particle partitioning of vehicle emitted primary organic aerosol (POA) in a traffic tunnel with three independent methods: artifact corrected bare-quartz filters, thermodenuder (TD) measurements, and thermal-desorption gas-chromatography mass-spectrometry (TD-GC-MS). Results from all methods consistently show that vehicle emitted POA measured in the traffic tunnel is semivolatile under a wide range of fleet compositions and ambient conditions. We compared the gas-particle partitioning of POA measured in both tunnel and dynamometer studies and found that volatility distributions measured in the traffic tunnel are similar to volatility distributions measured in the dynamometer studies, and predict similar gas-particle partitioning in the TD. These results suggest that the POA volatility distribution measured in the dynamometer studies can be applied to describe gas-particle partitioning of ambient POA emissions. The POA volatility distribution measured in the tunnel does not have significant diurnal or seasonal variations, which indicate that a single volatility distribution is adequate to describe the gas-particle partitioning of vehicle emitted POA in the urban environment.
机译：我们使用三种独立的方法测量了交通隧道中车辆排放的主要有机气溶胶（POA）的气态颗粒分配：人工校正的裸石英过滤器，热剥蚀仪（TD）测量和热脱附气相色谱质谱（TD） -GC-MS）。所有方法的结果一致表明，在广泛的车队组成和环境条件下，在交通隧道中测得的车辆排放的POA是半挥发性的。我们比较了在隧道和测功机研究中测得的POA的气体颗粒分配，发现在交通隧道中测得的挥发性分布与在测功机研究中测得的挥发性分布相似，并预测了TD中类似的气体颗粒分配。这些结果表明，在测功机研究中测得的POA挥发性分布可用于描述环境POA排放的气体颗粒分配。在隧道中测量的POA挥发性分布没有明显的昼夜变化或季节性变化，这表明单一的挥发性分布足以描述城市环境中车辆排放的POA的气体-颗粒分配。

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  • 来源
    《Environmental Science & Technology》 |2016年第22期|12146-12155|共10页
  • 作者

    Xiang Li; Timothy R. Dallmann; Andrew A. May; Daniel S. Tkacik; Andrew T. Lambe; John T. Jayne; Philip L. Croteau; Albert A Presto;

  • 作者单位

    Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States;

    Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,The International Council on Clean Transportation, Washington, DC 20005, United States;

    Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,Department of Civil, Environmental and Geodetic Engineering, The Ohio State University, Columbus, OH 43210, United States;

    Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States;

    Aerodyne Research, Inc., Billerica, Massachusetts 01821, United States;

    Aerodyne Research, Inc., Billerica, Massachusetts 01821, United States;

    Aerodyne Research, Inc., Billerica, Massachusetts 01821, United States;

    Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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