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首页> 外文期刊>Environmental Science & Technology >Effect of Cabin Ventilation Rate on Ultrafine Particle Exposure Inside Automobiles
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Effect of Cabin Ventilation Rate on Ultrafine Particle Exposure Inside Automobiles

机译：机舱通风率对汽车内超细颗粒物暴露的影响

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摘要

We alternately measured on-road and in-vehicle ultrafine (< 100 nm) particle (UFP) concentration for 5 passenger vehicles that comprised an age range of 18 years. A range of cabin ventilation settings were assessed during 301 trips through a 4 km road tunnel in Sydney, Australia. Outdoor airflow (ventilation) rates under these settings were quantified on open roads using tracer gas techniques. Significant variability in tunnel trip average median in-cabin/on-road (I/O) UFP ratios was observed (0.08 to ～1.0). Based on data spanning all test automobiles and ventilation settings, a positive linear relationship was found between outdoor air flow rate and I/O ratio, with the former accounting for a substantial proportion of variation in the latter (R~2 = 0.81). UFP concentrations recorded in-cabin during tunnel travel were significantly higher than those reported by comparable studies performed on open roadways. Asimple mathematical model afforded the ability to predict tunnel trip average in-cabin UFP concentrations with good accuracy. Our data indicate that under certain conditions, in-cabin UFP exposures incurred during tunnel travel may contribute significantly to daily exposure. The UFP exposure of automobile occupants appears strongly related to their choice of ventilation setting and vehicle.
机译：我们交替测量了5种年龄在18岁以下的乘用车的公路和车载超细（<100 nm）微粒（UFP）浓度。在301趟旅程中，通过澳大利亚悉尼一条4公里长的公路隧道，评估了一系列机舱通风设置。在这些设置下，室外空气流量（通风）使用示踪气体技术在空旷的道路上进行了量化。隧道出行的平均车内/公路（I / O）UFP比率中位数有显着变化（0.08至〜1.0）。根据涵盖所有测试汽车和通风设置的数据，发现室外空气流量与I / O比之间呈正线性关系，前者占后者变化的很大比例（R〜2 = 0.81）。在隧道行驶过程中，客舱内记录的UFP浓度明显高于在开放道路上进行的可比研究报告的浓度。 Asimple数学模型提供了以较高的精度预测隧道行程平均舱内UFP浓度的能力。我们的数据表明，在某些情况下，在隧道旅行期间发生的舱内UFP暴露可能会极大地影响日常暴露。 UFP对汽车乘员的暴露似乎与他们选择的通风环境和车辆密切相关。

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  • 来源
    《Environmental Science & Technology》 |2010年第9期|P.3546-3551|共6页
  • 作者

    LUKE D. KNIBBS; rnRICHARD J. DE DEAR; rnLIDIA MORAWSKA;

  • 作者单位

    International Laboratory for Air Quality and Health, Queensland University of Technology, GPO Box 2434, Brisbane, 4001,Queensland, Australia;

    rnFaculty of Architecture, Design and Planning, The University of Sydney, Sydney, Australia;

    rnInternational Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Australia;

  • 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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  • 正文语种 eng
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