Formation of Urban Fine Particulate Matter

Chemical Reviews, Journal Year: 2015, Volume and Issue: 115(10), P. 3803 - 3855

Published: May 5, 2015

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTFormation of Urban Fine Particulate MatterRenyi Zhang*†§, Gehui Wang†∥, Song Guo†§, Misti L. Zamora†, Qi Ying‡, Yun Lin†, Weigang Wang†⊥, Min Hu§, and Yuan Wang#View Author Information† †Departments Atmospheric Sciences Chemistry ‡Department Civil Engineering, Texas A&M University, College Station, 77843, United States§ State Key Joint Laboratory Environmental Simulation Pollution Control, Peking Beijing 100871, People's Republic China⊥ ∥Key Aerosol Physics Chemistry, Loess Quaternary Geology, Institute Earth Environment, ⊥State for Structural Unstable Stable Species, National Molecular (BNLMS), Chinese Academy Sciences, 100864, China# Jet Propulsion Laboratory, California Technology, Pasadena, 91125, States*E-mail: [email protected]Cite this: Chem. Rev. 2015, 115, 10, 3803–3855Publication Date (Web):May 5, 2015Publication History Received2 February 2015Published online5 May inissue 27 2015https://pubs.acs.org/doi/10.1021/acs.chemrev.5b00067https://doi.org/10.1021/acs.chemrev.5b00067review-articleACS PublicationsCopyright © 2015 American Chemical SocietyRequest reuse permissionsArticle Views17488Altmetric-Citations927LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated by Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Aerosols,Anions,Nanoparticles,Particulate matter,Volatile organic compounds Get e-Alerts

Language: Английский

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Recent advances in understanding secondary organic aerosol: Implications for global climate forcing

Reviews of Geophysics, Journal Year: 2017, Volume and Issue: 55(2), P. 509 - 559

Published: May 18, 2017

Abstract Anthropogenic emissions and land use changes have modified atmospheric aerosol concentrations size distributions over time. Understanding preindustrial conditions in organic due to anthropogenic activities is important because these features (1) influence estimates of radiative forcing (2) can confound the historical response climate increases greenhouse gases. Secondary (SOA), formed atmosphere by oxidation gases, represents a major fraction global submicron‐sized aerosol. Over past decade, significant advances understanding SOA properties formation mechanisms occurred through measurements, yet current models typically do not comprehensively include all processes. This review summarizes some developments during decade formation. We highlight importance processes that growth particles sizes relevant for clouds forcing, including extremely low volatility organics gas phase, acid‐catalyzed multiphase chemistry isoprene epoxydiols, particle‐phase oligomerization, physical such as viscosity. Several highlighted this are complex interdependent nonlinear effects on properties, formation, evolution SOA. Current neglect complexity nonlinearity thus less likely accurately predict project future sensitivity Efforts also needed rank most influential process‐related interactions, so be represented chemistry‐climate models.

Language: Английский

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Heterogeneous Photochemistry in the Atmosphere

Chemical Reviews, Journal Year: 2015, Volume and Issue: 115(10), P. 4218 - 4258

Published: March 16, 2015

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTHeterogeneous Photochemistry in the AtmosphereChristian George*†‡, Markus Ammann§, Barbara D'Anna†‡, D. J. Donaldson∥, and Sergey A. Nizkorodov⊥View Author Information† Université de Lyon 1, F-69626, France‡ CNRS, UMR5256, IRCELYON, Institut Recherches sur la Catalyse et l'Environnement Lyon, Villeurbanne France§ Laboratory of Radiochemistry Environmental Chemistry, Paul Scherrer Institut, 5232 Villigen, Switzerland∥ Department Chemistry Physical & Sciences, University Toronto, Ontario M5S 3H6, Canada ⊥ California, Irvine, California 92697, United States*Phone: +33-4-72431489. E-mail: [email protected]Cite this: Chem. Rev. 2015, 115, 10, 4218–4258Publication Date (Web):March 16, 2015Publication History Received14 November 2014Published online16 March 2015Published inissue 27 May 2015https://doi.org/10.1021/cr500648zCopyright © 2015 American Chemical SocietyRIGHTS PERMISSIONSACS AuthorChoiceArticle Views16603Altmetric-Citations424LEARN ABOUT THESE METRICSArticle Views are COUNTER-compliant sum full text article downloads since 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated by Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InReddit (14 MB) Get e-AlertsSUBJECTS:Aerosols,Anions,Interfaces,Photochemistry,Photodissociation e-Alerts

Language: Английский

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Nitrate radicals and biogenic volatile organic compounds: oxidation, mechanisms, and organic aerosol

Atmospheric chemistry and physics, Journal Year: 2017, Volume and Issue: 17(3), P. 2103 - 2162

Published: Feb. 13, 2017

Oxidation of biogenic volatile organic compounds (BVOC) by the nitrate radical (NO3) represents one important interactions between anthropogenic emissions related to combustion and natural from biosphere. This interaction has been recognized for more than 3 decades, during which time a large body research emerged laboratory, field, modeling studies. NO3-BVOC reactions influence air quality, climate visibility through regional global budgets reactive nitrogen (particularly nitrates), ozone, aerosol. Despite its long history significance this topic in atmospheric chemistry, number uncertainties remain. These include an incomplete understanding rates, mechanisms, aerosol yields reactions, lack constraints on role heterogeneous oxidative processes associated with NO3 radical, difficulty characterizing spatial distributions BVOC within poorly mixed nocturnal atmosphere, challenge constructing appropriate boundary layer schemes non-photochemical mechanisms use state-of-the-art chemical transport chemistry-climate models. review is result workshop same title held at Georgia Institute Technology June 2015. The first half summarizes current literature particular focus recent advances instrumentation models, secondary (SOA) formation chemistry. Building understanding, second outlines impacts chemistry quality climate, suggests critical needs better constrain improve predictive capabilities

Language: Английский

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The Role of Organic Aerosol in Atmospheric Ice Nucleation: A Review

ACS Earth and Space Chemistry, Journal Year: 2018, Volume and Issue: 2(3), P. 168 - 202

Published: Jan. 19, 2018

Predicting the formation of ice in atmosphere presents one great challenges physical sciences with important implications for chemistry and composition Earth's atmosphere, hydrological cycle, climate. Among atmospheric processes, heterogeneous nucleation proceeds on aerosol particles ranging from a few nanometers to micrometers size, commonly referred as nucleating (INPs). Research over last two decades has demonstrated that organic matter (OM) is ubiquitous present (OA) or coatings other particle types. The physicochemical properties OM make predicting how can contribute INP population challenging. This review focuses role INPs, summarizing highlighting recent advances our understanding process gained theoretical, laboratory, field studies. Examination residuals INPs analytical techniques demonstrates participates crystal formation. Molecular dynamic simulations provide insight into microscopic processes initiate nucleation. amorphous phase state supercooled metastable regime identified key factor assessing particles' pathways rates. A theoretical model advanced, based water activity, holistically predict changes rates coated by OM. goal this synthesize current propose future research directions needed fully evaluate OA atmosphere.

Language: Английский

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Molecular Characterization of Brown Carbon in Biomass Burning Aerosol Particles

Environmental Science & Technology, Journal Year: 2016, Volume and Issue: 50(21), P. 11815 - 11824

Published: Oct. 5, 2016

Emissions from biomass burning are a significant source of brown carbon (BrC) in the atmosphere. In this study, we investigate molecular composition freshly emitted organic aerosol (BBOA) samples collected during test burns sawgrass, peat, ponderosa pine, and black spruce. We demonstrate that both BrC absorption chemical light-absorbing compounds depend significantly on type fuels. Common chromophores selected BBOA include nitro-aromatics, polycyclic aromatic hydrocarbon derivatives, polyphenols spanning wide range weights, structures, light properties. A number biofuel-specific observed, indicating some them may be used as source-specific markers BrC. On average, ∼50% solvent-extractable fraction can attributed to limited strong chromophores. The coefficients affected by solar photolysis. Specifically, under typical atmospheric conditions, 300 nm absorbance decays with half-life ∼16 h. "molecular corridor" analysis volatility distribution suggests many fresh have low saturation mass concentration (<1 μg m–3) will retained particle phase atmospherically relevant conditions.

Language: Английский

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Molecular Chemistry of Atmospheric Brown Carbon Inferred from a Nationwide Biomass Burning Event

Environmental Science & Technology, Journal Year: 2017, Volume and Issue: 51(20), P. 11561 - 11570

Published: July 31, 2017

Lag Ba'Omer, a nationwide bonfire festival in Israel, was chosen as case study to investigate the influence of major biomass burning event on light absorption properties atmospheric brown carbon (BrC). The chemical composition and optical BrC chromophores were investigated using high performance liquid chromatography (HPLC) platform coupled photo diode array (PDA) resolution mass spectrometry (HRMS) detectors. Substantial increase coefficient observed during night-long event. Most attributed nitroaromatic compounds (NAC), comprising 28 elemental formulas at least 63 structural isomers. NAC, combination, accounted for 50-80% total visible (>400 nm) by solvent extractable BrC. results highlight that particular nitrophenols, are important contributors organic aerosol (BBOA), suggesting night time chemistry •NO3 N2O5 with particles may play significant role transformations Nitrophenols related especially BBOA. spectra influenced extraction solution pH, implying acidity is an factor controlling

Language: Английский

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Aerosol Mixing State: Measurements, Modeling, and Impacts

Reviews of Geophysics, Journal Year: 2019, Volume and Issue: 57(2), P. 187 - 249

Published: March 21, 2019

Abstract Atmospheric aerosols are complex mixtures of different chemical species, and individual particles exist in many shapes morphologies. Together, these characteristics contribute to the aerosol mixing state. This review provides an overview measurement techniques probe state, discusses how state is represented atmospheric models at scales, synthesizes our knowledge state's impact on climate‐relevant properties, such as cloud condensation ice nucleating particle concentrations, optical properties. We present findings within a framework that defines along with appropriate metrics quantify it. Future research directions identified, focus need for integrating measurements modeling.

Language: Английский

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Photochemical processing of aqueous atmospheric brown carbon

Atmospheric chemistry and physics, Journal Year: 2015, Volume and Issue: 15(11), P. 6087 - 6100

Published: June 4, 2015

Abstract. Atmospheric brown carbon (BrC) is a collective term for light absorbing organic compounds in the atmosphere. While identification of BrC and its formation mechanisms currently central effort community, little known about atmospheric removal processes aerosol BrC. As result, we report on series laboratory studies photochemical processing aqueous phase, by direct photolysis OH oxidation. Solutions ammonium sulfate mixed with glyoxal (GLYAS) or methylglyoxal (MGAS) are used as surrogates class secondary mediated imine intermediates. Three nitrophenol species, namely 4-nitrophenol, 5-nitroguaiacol 4-nitrocatechol, were investigated water-soluble originating from biomass burning. Photochemical induced significant changes absorptive properties The imine-mediated solutions exhibited rapid photo-bleaching both oxidation, half-lives minutes to few hours. species photo-enhancement visible range during onset but was further exposure an timescale hour less. To illustrate relevance this work, also performed experiments extracted biofuel combustion samples observed optical these well. Overall, indicate that models need incorporate representations accurately model their radiative impacts.

Language: Английский

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Review on recent progress in observations, source identifications and countermeasures of PM2.5

Environment International, Journal Year: 2015, Volume and Issue: 86, P. 150 - 170

Published: Nov. 17, 2015

Language: Английский

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