Grantee Research Project Results
2010 Progress Report: Formation of Secondary Organic Aerosol
EPA Grant Number: R833749Title: Formation of Secondary Organic Aerosol
Investigators: Seinfeld, John
Institution: California Institute of Technology
EPA Project Officer: Chung, Serena
Project Period: October 1, 2007 through September 30, 2010 (Extended to September 30, 2011)
Project Period Covered by this Report: October 1, 2009 through September 30,2010
Project Amount: $600,000
RFA: Sources and Atmospheric Formation of Organic Particulate Matter (2007) RFA Text | Recipients Lists
Research Category: Particulate Matter , Air Quality and Air Toxics , Air
Objective:
The goal of this project is to measure secondary organic aerosol formation in the laboratory and develop models to represent this process in atmospheric models.Progress Summary:
Notable results of this past year include:
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Elucidation of the high-NOx pathway to isoprene SOA formation
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Evaluation of the extent of oxidation of chamber SOA in a variety of systems
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Measurements of SOA products from naphthalene
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Global modeling of SOA, revealing the roles of SVOC, IVOC, and NOx, NO3
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Development of a detailed thermodynamic model of inorganic/organic/water mixtures for modeling SOA phase behavior and gas-particle partitioning.
Each of these studies has furthered our understanding of the potential of important classes of compounds to serve as sources of atmospheric SOA and thereby has fit the goals of the project.
Future Activities:
A number of studies are ongoing. These include:
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Continued study of the role of glyoxal as an SOA precursor, especially to explain conflicting data in the literature.
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Investigation of SOA formation from methoxyphenol compounds (major emissions from biomass burning).
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Development of a chamber protocol for SOA aging experiments.
Journal Articles on this Report : 9 Displayed | Download in RIS Format
| Other project views: | All 37 publications | 22 publications in selected types | All 22 journal articles |
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Chan AWH, Chan MN, Surratt JD, Chhabra PS, Loza CL, Crounse JD, Yee LD, Flagan RC, Wennberg PO, Seinfeld JH. Role of aldehyde chemistry and NOx concentrations in secondary organic aerosol formation. Atmospheric Chemistry and Physics 2010;10(15):7169-7188. |
R833749 (2010) R833749 (Final) |
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Chhabra PS, Flagan RC, Seinfeld JH. Elemental analysis of chamber organic aerosol using an aerodyne high-resolution aerosol mass spectrometer. Atmospheric Chemistry and Physics 2010;10(9):4111-4131. |
R833749 (2010) R833749 (Final) |
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Claeys M, Iinuma Y, Szmigielski R, Surratt JD, Blockhuys F, Van Alsenoy C, Boge O, Sierau B, Gomez-Gonzalez Y, Vermeylen R, Van der Veken P, Shahgholi M, Chan AWH, Herrmann H, Seinfeld JH, Maenhaut W. Terpenylic acid and related compounds from the oxidation of α-pinene: implications for new particle formation and growth above forests. Environmental Science & Technology 2009;43(18):6976-6982. |
R833749 (2010) R833749 (Final) |
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Kautzman KE, Surratt JD, Chan MN, Chan AWH, Hersey SP, Chhabra PS, Dalleska NF, Wennberg PO, Flagan RC, Seinfeld JH. Chemical composition of gas and aerosol-phase products from the photooxidation of naphthalene. The Journal of Physical Chemistry A 2010;114(2):913-934. |
R833749 (2010) R833749 (Final) |
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Loza CL, Chan AWH, Galloway MM, Keutsch FN, Flagan RC, Seinfeld JH. Characterization of vapor wall loss in laboratory chambers. Environmental Science & Technology 2010;44(13):5074-5078. |
R833749 (2010) R833749 (Final) |
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Pye HOT, Chan AWH, Barkley MP, Seinfeld JH. Global modeling of organic aerosol:the importance of reactive nitrogen (NOx and NO3). Atmospheric Chemistry and Physics 2010;10(22):11261-11276. |
R833749 (2010) R833749 (Final) R833370 (Final) |
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Pye HOT, Seinfeld JH. A global perspective on aerosol from low-volatility organic compounds. Atmospheric Chemistry and Physics 2010;10(9):4377-4401. |
R833749 (2010) R833749 (Final) R833370 (2009) R833370 (Final) |
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Surratt JD, Chan AWH, Eddingsaas NC, Chan M, Loza CL, Kwan AJ, Hersey SP, Flagan RC, Wennberg PO, Seinfeld JH. Reactive intermediates revealed in secondary organic aerosol formation from isoprene. Proceedings of the National Academy of Sciences of the United States of America 2010;107(15):6640-6645. |
R833749 (2010) R833749 (Final) |
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Zuend A, Marcolli C, Peter T, Seinfeld JH. Computation of liquid-liquid equilibria and phase stabilities: implications for RH-dependent gas/particle partitioning of organic-inorganic aerosols. Atmospheric Chemistry and Physics 2010;10(16):7795-7820. |
R833749 (2010) R833749 (Final) |
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Supplemental Keywords:
Relevant Websites:
Progress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.