@article {17750,
	title = {Potential of secondary aerosol formation from Chinese gasoline engine exhaust},
	journal = {Journal of Environmental SciencesJournal of Environmental SciencesJournal of Environmental Sciences},
	volume = {66},
	year = {2018},
	note = {Gf9hgTimes Cited:0Cited References Count:41},
	month = {Apr},
	pages = {348-357},
	abstract = {Light-duty gasoline vehicles have drawn public attention in China due to their significant primary emissions of particulate matter and volatile organic compounds (VOCs). However, little information on secondary aerosol formation from exhaust for Chinese vehicles and fuel conditions is available. In this study, chamber experiments were conducted to quantify the potential of secondary aerosol formation from the exhaust of a port fuel injection gasoline engine. The engine and fuel used are common in the Chinese market, and the fuel satisfies the China V gasoline fuel standard. Substantial secondary aerosol formation was observed during a 4-5 hr simulation, which was estimated to represent more than 10 days of equivalent atmospheric photo-oxidation in Beijing. As a consequence, the extreme case secondary organic aerosol (SOA) production was 426 +/- 85 mg/kg-fuel, with high levels of precursors and OH exposure. The low hygroscopicity of the aerosols formed inside the chamber suggests that SOA was the dominant chemical composition. Fourteen percent of SOA measured in the chamber experiments could be explained through the oxidation of speciated single-ring aromatics. Unspeciated precursors, such as intermediate-volatility organic compounds and semi-volatile organic compounds, might be significant for SOA formation from gasoline VOCs. We concluded that reductions of emissions of aerosol precursor gases from vehicles are essential to mediate pollution in China. (C) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.},
	keywords = {chamber simulation, condensation nucleus activity, diesel, gasoline engine exhaust, hygroscopic growth, organic aerosol, photochemical oxidation, photooxidation, port fuel injection, resolved chemical-characterization, secondary aerosol formation, secondary organic aerosol, single-parameter representation, smog chamber, vehicle emissions},
	isbn = {1001-0742},
	author = {Du, Z. F. and Hu, M. and Peng, J. F. and Guo, S. and Zheng, R. and Zheng, J. and Shang, D. J. and Qin, Y. H. and Niu, H. and Li, M. R. and Yang, Y. D. and Lu, S. H. and Y.S. Wu and Shao, M. and Shuai, S. J.}
}
