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首页> 外文期刊>Environmental Science & Technology >Platinum and Palladium Emissions from On-Road Vehicles in the KaisermUhlen Tunnel (Vienna, Austria)
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Platinum and Palladium Emissions from On-Road Vehicles in the KaisermUhlen Tunnel (Vienna, Austria)

机译：KaisermUhlen隧道（奥地利维也纳）的公路车辆的铂和钯排放量

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摘要

Total and size-segregated Pt and Pd emission factors from on-road vehicles were measured in the KaisermUhlen Tunnel in Vienna, Austria. Aerosol sampling was performed simultaneously inside and outside the tunnel during April and May 2005. Analysis of the acid-digested aerosol samples was performed using a preconcentration procedure with subsequent on-line detection by electrothermal atomic absorption spectrometry (ETAAS). Inside the tunnel distinctly increased Pt and Pd concentrations were found with highest levels in total suspended particulate matter samples and reduced concentrations in the size-segregated PM10 and PM2.5 samples. Emission factors were calculated from concentration differences between tunnel inside and tunnel outside samples, the distance between tunnel entrance and sampling location, the ventilation rate, and the number of vehicles passing through the tunnel. Emission rates observed for Pt ranged from 38 ± 5.9 to 146 ± 13 ng veh~(-1) km~(-1), whereas the emission factors of Pd varied between 13 ± 2.1 and 42 ± 4.1 ng veh~(-1) km~(-1). Variations in the emission rates were assumed to originate from alterations in traffic conditions. Size-segregated investigations revealed that the major part of Pt and Pd emissions were released in the coarse aerosol mode (size fraction > PM10), nevertheless a considerable fraction (～12% and ～22% respectively) was emitted in the inhalable PM2.5 fraction.
机译：在奥地利维也纳的KaisermUhlen隧道中，对公路车辆的总Pt和Pd排放因子进行了分类。在2005年4月和2005年5月期间，在隧道内和隧道外同时进行了气溶胶采样。使用预浓缩程序对酸消化的气溶胶样品进行分析，然后通过电热原子吸收光谱法（ETAAS）在线检测。在隧道内，发现总悬浮颗粒物样品中的Pt和Pd浓度明显升高，最高水平，而按尺寸分离的PM10和PM2.5样品的浓度降低。根据隧道内和隧道外样品之间的浓度差，隧道入口与采样位置之间的距离，通风率以及通过隧道的车辆数量来计算排放因子。 Pt的发射率范围从38±5.9到146±13 ng veh〜（-1）km〜（-1），而Pd的发射因子在13±2.1和42±4.1 ng veh〜（-1）之间变化。 km〜（-1）。排放率的变化被认为是由于交通状况的变化而引起的。尺寸隔离研究表明，Pt和Pd排放的大部分以粗气溶胶模式释放（尺寸分数> PM10），但可吸入PM2.5排放了相当一部分（分别为〜12％和〜22％）。分数。

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  • 来源
    《Environmental Science & Technology》 |2007年第14期|4938-4945|共8页
  • 作者

    ANDREAS LIMBECK; CHRISTOPH PULS; MARKUS HANDLER;

  • 作者单位

    Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164 AC, A-1060 Vienna, Austria;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
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