globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1916366117
论文题名:
Remarkable nucleation and growth of ultrafine particles from vehicular exhaust
作者: Guo S.; Hu M.; Peng J.; Wu Z.; Zamora M.L.; Shang D.; Du Z.; Zheng J.; Fang X.; Tang R.; Wu Y.; Zeng L.; Shuai S.; Zhang W.; Wang Y.; Ji Y.; Li Y.; Zhang A.L.; Wang W.; Zhang F.; Zhao J.; Gong X.; Wang C.; Molina M.J.; Zhang R.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:7
起始页码: 3427
结束页码: 3432
语种: 英语
英文关键词: Growth ; New particle formation ; Nucleation ; Organics ; Ultrafine particles
Scopus关键词: ammonia ; hydrocarbon ; nitrate ; sulfate ; sulfuric acid ; toluene ; volatile organic compound ; air pollution ; air temperature ; Article ; concentration (parameter) ; exhaust gas ; humidity ; hydrogen bond ; limit of detection ; membrane permeability ; particle size ; particulate matter ; photochemistry ; photolysis ; photooxidation ; priority journal ; solar radiation ; sunlight ; thermodynamics ; wind ; air pollutant ; chemistry ; exhaust gas ; oxidation reduction reaction ; particle size ; particulate matter ; temperature ; Air Pollutants ; Oxidation-Reduction ; Particle Size ; Particulate Matter ; Temperature ; Vehicle Emissions
英文摘要: High levels of ultrafine particles (UFPs; diameter of less than 50 nm) are frequently produced from new particle formation under urban conditions, with profound implications on human health, weather, and climate. However, the fundamental mechanisms of new particle formation remain elusive, and few experimental studies have realistically replicated the relevant atmospheric conditions. Previous experimental studies simulated oxidation of one compound or a mixture of a few compounds, and extrapolation of the laboratory results to chemically complex air was uncertain. Here, we show striking formation of UFPs in urban air from combining ambient and chamber measurements. By capturing the ambient conditions (i.e., temperature, relative humidity, sunlight, and the types and abundances of chemical species), we elucidate the roles of existing particles, photochemistry, and synergy of multipollutants in new particle formation. Aerosol nucleation in urban air is limited by existing particles but negligibly by nitrogen oxides. Photooxidation of vehicular exhaust yields abundant precursors, and organics, rather than sulfuric acid or base species, dominate formation of UFPs under urban conditions. Recognition of this source of UFPs is essential to assessing their impacts and developing mitigation policies. Our results imply that reduction of primary particles or removal of existing particles without simultaneously limiting organics from automobile emissions is ineffective and can even exacerbate this problem. © 2020 National Academy of Sciences. All rights reserved.
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被引频次[WOS]:122   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164322
Appears in Collections:气候变化与战略

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作者单位: Guo, S., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Hu, M., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Peng, J., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States, Center for Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China; Wu, Z., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Zamora, M.L., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States, Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, United States; Shang, D., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Du, Z., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Zheng, J., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Fang, X., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Tang, R., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Wu, Y., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Zeng, L., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Shuai, S., State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing, 100084, China; Zhang, W., State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing, 100084, China; Wang, Y., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States; Ji, Y., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Li, Y., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States; Zhang, A.L., Department of Chemistry, College of Natural Sciences, University of Texas at Austin, Austin, TX 78712, United States; Wang, W., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; Zhang, F., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States, State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China; Zhao, J., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States; Gong, X., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States, College of Electronic Information, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China; Wang, C., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States, School of Information Science and Technology, University of Science and Technology of China, Hefei, Anhui, 230026, China; Molina, M.J., Department of Chemistry and Biochemistry, University of California San Diego, San Diego, CA 92093, United States; Zhang, R., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States

Recommended Citation:
Guo S.,Hu M.,Peng J.,et al. Remarkable nucleation and growth of ultrafine particles from vehicular exhaust[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(7)
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