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首页> 外文期刊>Environmental Science & Technology >Contribution of Lubricating Oil to Particulate Matter Emissions from Light-Duty Gasoline Vehicles in Kansas City
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Contribution of Lubricating Oil to Particulate Matter Emissions from Light-Duty Gasoline Vehicles in Kansas City

机译：润滑油对堪萨斯城轻型汽油车颗粒物排放的贡献

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摘要

The contribution of lubricating oil to particulate matter (PM) emissions representative of the in-use 2004 light-duty gasoline vehicles fleet is estimated from the Kansas City Light-Duty Vehicle Emissions Study (KCVES). PM emissions are apportioned to lubricating oil and gasoline using aerosol-phase chemical markers measured in PM samples obtained from 99 vehicles tested on the California Unified Driving Cycle. The oil contribution to fleet-weighted PM emission rates is estimated to be 25% of PM emission rates. Oil contributes primarily to the organic fraction of PM, with no detectable contribution to elemental carbon emissions. Vehicles are analyzed according to pre-1991 and 1991-2004 groups due to differences in properties of the fitting species between newer and older vehicles, and to account for the sampling design of the study. Pre-1991 vehicles contribute 13.5% of the KC vehicle population, 70% of oil-derived PM for the entire fleet, and 33% of the fuel-derived PM. The uncertainty of the contributions is calculated from a survey analysis resampling method, with 95% confidence intervals for the oil-derived PM fraction ranging from 13% to 37%. The PM is not completely apportioned to the gasoline and oil due to several contributing factors, including varied chemical composition of PM among vehicles, metal emissions, and PM measurement artifacts. Additional uncertainties include potential sorption of polycyclic aromatic hydrocarbons into the oil, contributions of semivolatile organic compounds from the oil to the PM measurements, and representing the in-use fleet with a limited number of vehicles.
机译：堪萨斯市轻型汽车排放研究（KCVES）估计了润滑油对2004年使用中轻型汽油汽车车队的颗粒物（PM）排放的影响。使用从加州统一驾驶循环测试的99辆汽车中获得的PM样品中测得的气溶胶相化学标记物，将PM排放物分配给润滑油和汽油。石油对车队加权PM排放率的贡献估计为PM排放率的25％。石油主要是造成PM中有机成分的元素，而对元素碳的排放没有可检测的成分。由于新旧车辆之间配件种类的差异，根据1991年前和1991-2004年的组对车辆进行了分析，并考虑了研究的抽样设计。 1991年前的车辆在整个KC车队中占13.5％，在整个车队中占石油衍生的PM的70％，在燃料衍生的PM中占33％。贡献的不确定性是通过调查分析重采样方法计算得出的，石油衍生的PM组分的95％置信区间为13％至37％。由于几种因素，包括车辆中PM的化学成分不同，金属排放物和PM测量伪影，PM并未完全分配给汽油和机油。其他不确定性包括多环芳烃可能吸附在机油中，半挥发性有机化合物从机油到PM测量的贡献以及使用车辆数量有限的使用中车队。

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  • 来源
    《Environmental Science & Technology》 |2012年第7期|p.4191-4199|共9页
  • 作者

    Darrell B. Sonntag; Chad R. Bailey; Carl R. Fulper; Richard W. Baldauf;

  • 作者单位

    National Vehicle and Fuel Emissions Laboratory, Office of Transportation and Air Quality, U.S. Environmental Protection Agency, Ann Arbor, Michigan 48105, United States;

    National Vehicle and Fuel Emissions Laboratory, Office of Transportation and Air Quality, U.S. Environmental Protection Agency, Ann Arbor, Michigan 48105, United States;

    National Vehicle and Fuel Emissions Laboratory, Office of Transportation and Air Quality, U.S. Environmental Protection Agency, Ann Arbor, Michigan 48105, United States;

    National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,Research Triangle Park, North Carolina 27711, 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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