Contribution of lubricating oil to particulate matter emissions from light-duty gasoline vehicles in Kansas City

Environmental Science & Technology
Darrell B SonntagRichard W Baldauf

Abstract

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 contr...Continue Reading

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Citations

Oct 26, 2013·Environmental Science & Technology·Sara D ForestieriChristopher D Cappa
Jan 23, 2016·Environmental Science & Technology·Naomi ZimmermanGreg Evans
Jun 20, 2014·Journal of the Air & Waste Management Association·Darrell B SonntagCarl R Fulper
Dec 22, 2016·Environmental Science & Technology·Drew R GentnerAllen L Robinson
Feb 10, 2020·Archives of Environmental Contamination and Toxicology·Ho-Tang Liao, Chang-Fu Wu
Dec 11, 2014·Environmental Science & Technology·Toshihiro KuwayamaMichael J Kleeman
Feb 14, 2015·Environmental Science & Technology·Liisa PirjolaTopi Rönkkö
Mar 14, 2014·Environmental Science & Technology·David R WortonAllen H Goldstein
Feb 8, 2022·Frontiers in Neurology·Lilian Calderón-GarcidueñasUNKNOWN Research Universidad del Valle de México UVM Group

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