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Linking Tailpipe to Ambient: Phase 1-3, Final Report.
| 题名： | Linking Tailpipe to Ambient: Phase 1-3, Final Report. |
| 关键词： | Aerosols; Air Quality; Diesel Fuels; Emission Control; Engines; Gasoline; Mobile Pollutant Sources; Motor Vehicles; Particulates; Tailpipe; Transformations |
| 摘要： | This project was motivated by the continuing need to improve ambient air quality. As of December 2012, more than 74 million Americans live in areas that violate the National Ambient Air Quality Standard for fine particulate matter (or PM2.5). Organic aerosol often contributes between 30 and 60% of ambient fine particulate matter. However, the sources of ambient organic aerosols are not well understood and state-of-the-art chemical transport models often underpredict the measured organic aerosol concentrations by a factor of 2 or more. Better understanding of the sources of organic aerosols may be needed for the development of effective control strategies. This report describes results from a three-phase test program that characterized the emissions from on-road gasoline vehicles, on-road diesel vehicles, and small off-road engines. The overarching goal of the project was to investigate the atmospheric transformations of mobile source emissions to better quantify their contribution to ambient PM levels in other words to link tailpipe to ambient. This was done by characterizing the tailpipe emissions from in-use sources and by investigating the atmospheric evolution of the emissions using dilution tunnels and smog chambers. |
| 报告类型： | 科技报告 |
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