Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions
文献类型：期刊论文
| 作者 | Liao, Keren1; Chen, Qi1; Liu, Ying1; Li, Yong Jie2; Lambe, Andrew T.3; Zhu, Tong1; Huang, Ru-Jin4,5; Zheng, Yan1; Cheng, Xi1; Miao, Ruqian1 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 55期号:11页码:7276-7286 |
| 关键词 | mobile laboratory vehicle emissions oxidation flow reactor high NOx SOA spatial distributions |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.0c08591 |
| 通讯作者 | Chen, Qi(qichenpku@pku.edu.cn) |
| 英文摘要 | Vehicle emissions are an important source of urban particular matter. To investigate the secondary organic aerosol (SOA) formation potential of real-world vehicle emissions, we exposed on-road air in Beijing to hydroxyl radicals generated in an oxidation flow reactor (OFR) under high-NOx conditions on-board a mobile laboratory and characterized SOA and their precursors with a suite of state-of-the-art instrumentation. The OFR produced 10-170 mu g m(-3) of SOA with a maximum SOA formation potential of 39-50 mu g m(-3) ppmv(-1) CO that occurred following an integrated OH exposure of (1.3-2.0) x 10(11) molecules cm(-3) s. The results indicate relatively shorter photochemical ages for maximum SOA production than previous OFR results obtained under low-NOx conditions. Such timescales represent the balance of functionalization and fragmentation, possibly resulting in different spatial distributions of SOA in different seasons as the oxidant level changes. The detected precursors may explain as much as 13% of the observed SOA with the remaining plausibly contributed by the oxidation of undetected intermediate-volatility organic compounds. Extrapolation of the results suggests an annual SOA production rate of 0.78 Tg yr(-1) from mobile gasoline sources in China, highlighting the importance of effective regulation of gaseous vehicular precursors to improve air quality in the future. |
| WOS关键词 | OXIDATION FLOW REACTORS ; DIRECT-INJECTION GDI ; PARTICULATE MATTER ; GASOLINE VEHICLES ; RADICAL CHEMISTRY ; COLD-START ; OH ; AMBIENT ; AIR ; INTERMEDIATE |
| 资助项目 | National Natural Science Foundation of China[91544107] ; National Natural Science Foundation of China[41875165] ; National Natural Science Foundation of China[51861135102] ; National Natural Science Foundation of China[41961134034] ; 111 Project of Urban Air Pollution and Health Effects[B20009] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000659374200009 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; 111 Project of Urban Air Pollution and Health Effects |
| 源URL | [http://ir.ieecas.cn/handle/361006/16780]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Chen, Qi |
| 作者单位 | 1.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, BIC ESAT & IJRC, Beijing 100871, Peoples R China 2.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa 999078, Macao, Peoples R China 3.Aerodyne Res Inc, Billerica, MA 01821 USA 4.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 5.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710075, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liao, Keren,Chen, Qi,Liu, Ying,et al. Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(11):7276-7286. |
| APA | Liao, Keren.,Chen, Qi.,Liu, Ying.,Li, Yong Jie.,Lambe, Andrew T..,...&Jia, Tianjiao.(2021).Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(11),7276-7286. |
| MLA | Liao, Keren,et al."Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.11(2021):7276-7286. |
入库方式： OAI收割
来源：地球环境研究所
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