Hazardous air pollution from mobile sources: A comparison of alternative fuel and reformulated gasoline vehicles

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Title: Hazardous air pollution from mobile sources: A comparison of alternative fuel and reformulated gasoline vehicles
Author: Winebrake, James; Deaton, Michael
Abstract: Although there have been several studies examining emissions of criteria pollutants from in-use alternative fuel vehicles (AFVs), little is known about emissions of hazardous air pollutants (HAPs) from these vehicles. This paper explores HAP tailpipe emissions from a variety of AFVs operating in the federal government fleet and compares these emissions to emissions from identical vehicles operating on reformulated gasoline. Emissions estimates are presented for a variety of fuel/model combinations and on four HAPs (acetaldehyde, 1,3-butadiene, benzene, and formaldehyde). The results indicate that all AFVs tested offer reduced emissions of HAPs, with the following exceptions: ethanol fueled vehicles emit more acetaldehyde than RFG vehicles, and ethanol- and methanol-fueled vehicles emit more formaldehyde than RFG vehicles. The results from this paper can lead to more accurate emissions factors for HAPs, thus improving HAP inventory and associated risk estimates for both AFVs and conventional vehicles.
Description: Article from the Journal of the Air & Waste Management Association, copyright 1995. The magazine publisher is the copyright holder of this article and it is reproduced with permission. Further reproduction of this article in violation of the copyright is prohibited.
Record URI: http://hdl.handle.net/1850/8641
Date: 1995-05

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