气候变化领域集成服务门户(CCPortal): Significant source of secondary aerosol: Formation from gasoline evaporative emissions in the presence of SO2 and NH3

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DOI	10.5194/acp-19-8063-2019
	Significant source of secondary aerosol: Formation from gasoline evaporative emissions in the presence of SO2 and NH3
	Chen T.; Liu Y.; Ma Q.; Chu B.; Zhang P.; Liu C.; Liu J.; He H.
发表日期	2019
ISSN	16807316
起始页码	8063
结束页码	8081
卷号	19 期号:12
英文摘要	Gasoline evaporative emissions have become an important anthropogenic source of urban atmospheric volatile organic compounds (VOCs) and secondary organic aerosol (SOA). These emissions have a significant impact on regional air quality, especially in China where car ownership is growing rapidly. However, the contribution of evaporative emissions to secondary aerosol (SA) is not clear in an air pollution complex in which a high concentration of SO2 and NH3 was present. In this study, the effects of SO2 and NH3 on SA formation from unburned gasoline vapor were investigated in a 30 m3 indoor smog chamber. It was found that an increase in SO2 and NH3 concentrations (0-151 and 0-200 ppb, respectively) could linearly promote the formation of SA, which could be enhanced by a factor of 1.6-2.6 and 2.0-2.5, respectively. Sulfate was most sensitive to the SO2 concentration, followed by organic aerosol, which was due not only to the acid catalytic effect, but was also related to the formation of organic sulfur-containing compounds. In the case of an increasing NH3 concentration, ammonium nitrate increased more significantly than organic aerosol, and nitrogen-containing organics were also enhanced, as revealed by the results of positive matrix factorization (PMF) analysis. New particle formation (NPF) and particle size growth were also significantly enhanced in the presence of SO2 and NH3. This work indicates that gasoline evaporative emissions will be a significant source of SA, especially in the presence of high concentrations of SO2 and NH3. Meanwhile, these emissions might also be a potential source of sulfurand nitrogen-containing organics. Our work provides a scientific basis for the synergistic emission reduction of secondary aerosol precursors, including NOx, SO2, NH3, and particularly VOCs, to mitigate particulate matter (PM) pollution in China. © 2019 The Author(s).
语种	英语
scopus关键词	aerosol; air quality; anthropogenic source; atmospheric pollution; concentration (composition); evaporation; formation mechanism; petroleum; point source; volatile organic compound; China
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144327
作者单位	State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
推荐引用方式 GB/T 7714	Chen T.,Liu Y.,Ma Q.,et al. Significant source of secondary aerosol: Formation from gasoline evaporative emissions in the presence of SO2 and NH3[J],2019,19(12).
APA	Chen T..,Liu Y..,Ma Q..,Chu B..,Zhang P..,...&He H..(2019).Significant source of secondary aerosol: Formation from gasoline evaporative emissions in the presence of SO2 and NH3.Atmospheric Chemistry and Physics,19(12).
MLA	Chen T.,et al."Significant source of secondary aerosol: Formation from gasoline evaporative emissions in the presence of SO2 and NH3".Atmospheric Chemistry and Physics 19.12(2019).