气候变化领域集成服务门户(CCPortal): Rethinking organic aerosols: Semivolatile emissions and photochemical aging

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DOI	10.1126/science.1133061
	Rethinking organic aerosols: Semivolatile emissions and photochemical aging
	Robinson A.L.; Donahue N.M.; Shrivastava M.K.; Weitkamp E.A.; Sage A.M.; Grieshop A.P.; Lane T.E.; Pierce J.R.; Pandis S.N.
发表日期	2007
ISSN	0036-8075
起始页码	1259
结束页码	1262
卷号	315 期号:5816
英文摘要	Most primary organic-particulate emissions are semivolatile; thus, they partially evaporate with atmospheric dilution, creating substantial amounts of low-volatility gas-phase material. Laboratory experiments show that photo-oxidation of diesel emissions rapidly generates organic aerosol, greatly exceeding the contribution from known secondary organic-aerosol precursors. We attribute this unexplained secondary organic-aerosol production to the oxidation of low-volatility gas-phase species. Accounting for partitioning and photochemical processing of primary emissions creates a more regionally distributed aerosol and brings model predictions into better agreement with observations. Controlling organic particulate-matter concentrations will require substantial changes in the approaches that are currently used to measure and regulate emissions.
英文关键词	organic compound; volatile organic compound; aerosol; emission; photochemistry; photooxidation; aerosol; air pollution control; airborne particle; article; atmospheric dispersion; dilution; evaporation; exhaust gas; gas analysis; particulate matter; photochemical aging; photooxidation; priority journal; volatilization; Aerosols; Air Pollutants; Computer Simulation; Hydrocarbons; Mathematics; Models, Chemical; Organic Chemicals; Oxidation-Reduction; Particulate Matter; Phase Transition; Photochemistry; Ultraviolet Rays; Vehicle Emissions; Volatilization
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/245247
作者单位	Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA 15213, United States; Department of Chemical Engineering, University of Patras, Patra 26500, Greece
推荐引用方式 GB/T 7714	Robinson A.L.,Donahue N.M.,Shrivastava M.K.,et al. Rethinking organic aerosols: Semivolatile emissions and photochemical aging[J],2007,315(5816).
APA	Robinson A.L..,Donahue N.M..,Shrivastava M.K..,Weitkamp E.A..,Sage A.M..,...&Pandis S.N..(2007).Rethinking organic aerosols: Semivolatile emissions and photochemical aging.Science,315(5816).
MLA	Robinson A.L.,et al."Rethinking organic aerosols: Semivolatile emissions and photochemical aging".Science 315.5816(2007).