气候变化领域集成服务门户(CCPortal): Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity

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DOI	10.1126/science.aao4839
	Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity
	Yao L.; Garmash O.; Bianchi F.; Zheng J.; Yan C.; Kontkanen J.; Junninen H.; Mazon S.B.; Ehn M.; Paasonen P.; Sipilä M.; Wang M.; Wang X.; Xiao S.; Chen H.; Lu Y.; Zhang B.; Wang D.; Fu Q.; Geng F.; Li L.; Wang H.; Qiao L.; Yang X.; Chen J.; Kerminen V.-M.; Petäjä T.; Worsnop D.R.; Kulmala M.; Wang L.
发表日期	2018
ISSN	0036-8075
起始页码	278
结束页码	281
卷号	361 期号:6399
英文摘要	Atmospheric new particle formation (NPF) is an important global phenomenon that is nevertheless sensitive to ambient conditions. According to both observation and theoretical arguments, NPF usually requires a relatively high sulfuric acid (H2SO4) concentration to promote the formation of new particles and a low preexisting aerosol loading to minimize the sink of new particles. We investigated NPF in Shanghai and were able to observe both precursor vapors (H2SO4) and initial clusters at a molecular level in a megacity. High NPF rates were observed to coincide with several familiar markers suggestive of H2SO4–dimethylamine (DMA)–water (H2O) nucleation, including sulfuric acid dimers and H2SO4-DMA clusters. In a cluster kinetics simulation, the observed concentration of sulfuric acid was high enough to explain the particle growth to ~3 nanometers under the very high condensation sink, whereas the subsequent higher growth rate beyond this size is believed to result from the added contribution of condensing organic species. These findings will help in understanding urban NPF and its air quality and climate effects, as well as in formulating policies to mitigate secondary particle formation in China. © 2017 The Authors, some rights reserved.
英文关键词	amine; dimer; dimethylamine; monomer; nanoparticle; sulfuric acid; aerosol; air quality; atmospheric particle; climate effect; concentration (composition); environmental policy; megacity; reaction kinetics; sulfuric acid; air quality; air temperature; ambient air; Article; atmosphere; atmospheric nucleation; China; city; concentration (parameters); controlled study; ecological phenomena and functions; environmental impact; growth rate; kinetics; megacity; new particle formation; particle size; polymerization; priority journal; qualitative analysis; simulation; China; Shanghai
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246097
作者单位	Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, 00014, Finland; Aerosol and Haze Laboratory, Beijing University of Chemical Technology, Beijing, 100029, China; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Department of Environmental Science and Analytical Chemistry (ACES), Bolin Centre for Climate Research, Stockholm University, Stockholm, 10691, Sweden; Laboratory of Environmental Physics, Institute of Physics, University of Tartu, Tartu, 50411, Estonia; Shanghai Environmental Monitoring Center, Shanghai, 200030, China; Shanghai Meteorology Bureau, Shanghai, 200135, China; Shanghai Academy of Environmental Sciences, Shanghai, 200233, China; Insti...
推荐引用方式 GB/T 7714	Yao L.,Garmash O.,Bianchi F.,et al. Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity[J],2018,361(6399).
APA	Yao L..,Garmash O..,Bianchi F..,Zheng J..,Yan C..,...&Wang L..(2018).Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity.Science,361(6399).
MLA	Yao L.,et al."Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity".Science 361.6399(2018).