| Title: | Primary particulate emissions and secondary organic aerosol (SOA) formation from idling diesel vehicle exhaust in China |
| Author(s): | Deng W; Hu Q; Liu T; Wang X; Zhang Y; Song W; Sun Y; Bi X; Yu J; Yang W; Huang X; Zhang Z; Huang Z; He Q; Mellouki A; George C; |
| Address: | "State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China. State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address: wangxm@gig.ac.cn. State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. Division of Environment, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China. Institut de Combustion, Aerothermique, Reactivite et Environnement (ICARE), CNRS, 45071 Orleans Cedex 02, France. Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), CNRS, UMR5256, Villeurbanne F-69626, France" |
| DOI: | 10.1016/j.scitotenv.2017.03.088 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "In China diesel vehicles dominate the primary emission of particulate matters from on-road vehicles, and they might also contribute substantially to the formation of secondary organic aerosols (SOA). In this study tailpipe exhaust of three typical in-use diesel vehicles under warm idling conditions was introduced directly into an indoor smog chamber with a 30m(3) Teflon reactor to characterize primary emissions and SOA formation during photo-oxidation. The emission factors of primary organic aerosol (POA) and black carbon (BC) for the three types of Chinese diesel vehicles ranged 0.18-0.91 and 0.15-0.51gkg-fuel(-1), respectively; and the SOA production factors ranged 0.50-1.8gkg-fuel(-1) and SOA/POA ratios ranged 0.7-3.7 with an average of 2.2. The fuel-based POA emission factors and SOA production factors from this study for idling diesel vehicle exhaust were 1-3 orders of magnitude higher than those reported in previous studies for idling gasoline vehicle exhaust. The emission factors for total particle numbers were 0.65-4.0x10(15)particleskg-fuel(-1), and particles with diameters less than 50nm dominated in total particle numbers. Traditional C(2)-C(12) precursor non-methane hydrocarbons (NMHCs) could only explain less than 3% of the SOA formed during aging and contribution from other precursors including intermediate volatile organic compounds (IVOC) needs further investigation" |
| Keywords: | Black carbon Chamber simulation Diesel vehicles Particle number Primary organic aerosols Secondary organic aerosols; |
| Notes: | "PubMed-not-MEDLINEDeng, Wei Hu, Qihou Liu, Tengyu Wang, Xinming Zhang, Yanli Song, Wei Sun, Yele Bi, Xinhui Yu, Jianzhen Yang, Weiqiang Huang, Xinyu Zhang, Zhou Huang, Zhonghui He, Quanfu Mellouki, Abdelwahid George, Christian eng Netherlands 2017/03/30 Sci Total Environ. 2017 Sep 1; 593-594:462-469. doi: 10.1016/j.scitotenv.2017.03.088. Epub 2017 Mar 27" |
