Grantee Research Project Results
2014 Progress Report: The role of nitrate radicals (NO3) in aerosol life cycle: Secondary organic aerosol formation and aging of atmospheric organic aerosols
EPA Grant Number: R835403Title: The role of nitrate radicals (NO3) in aerosol life cycle: Secondary organic aerosol formation and aging of atmospheric organic aerosols
Investigators: Ng, Nga Lee
Institution: Georgia Institute of Technology
EPA Project Officer: Chung, Serena
Project Period: April 1, 2013 through March 31, 2016 (Extended to March 31, 2017)
Project Period Covered by this Report: April 1, 2014 through March 31,2015
Project Amount: $300,000
RFA: Anthropogenic Influences on Organic Aerosol Formation and Regional Climate Implications (2012) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , Climate Change , Air , Early Career Awards
Objective:
The goal of this project is to experimentally determine the extent to which NO3 radicals (formed from anthropogenic NO2 and ozone) affect organic aerosol (OA) loading and composition over its atmospheric lifetime, taking into account secondary organic aerosol (SOA) formation from NO3 oxidation pathway and both daytime and nighttime aging processes.
Progress Summary:
- Investigation of SOA and organic nitrate formation from β-pinene+NO3 under reaction conditions (humidity, seed acidity, peroxy radical fate) relevant to southeast United States.
- Determination of the contribution of monoterpenen+NO3 reaction to ambient organic aerosols in the southeast United States.
- Incorporation of findings from our laboratory experiments to improve representation and treatment of organic nitrate formation and fates in CMAQ.
Future Activities:
- Study the effects of dilution and temperature change on SOA and organic nitrates formed from NO3+monoterpene
- Investigate the effects of photolysis vs. OH oxidation on organic nitrates formed from NO3+monoterpene.
Journal Articles on this Report : 3 Displayed | Download in RIS Format
Other project views: | All 47 publications | 21 publications in selected types | All 20 journal articles |
---|
Type | Citation | ||
---|---|---|---|
|
Boyd CM, Sanchez J, Xu L, Eugene AJ, Nah T, Tuet WY, Guzman MI, Ng NL. Secondary organic aerosol formation from the β-pinene+NO3 system: effect of humidity and peroxy radical fate. Atmospheric Chemistry and Physics 2015;15(13):7497-7522. |
R835403 (2014) R835403 (2015) R835403 (Final) R834799 (Final) |
Exit Exit Exit |
|
Pye HOT, Luecken DJ, Xu L, Boyd CM, Ng NL, Baker KR, Ayres BR, Bash JO, Baumann K, Carter WPL, Edgerton E, Fry JL, Hutzell WT, Schwede DB, Shepson PB. Modeling the current and future roles of particulate organic nitrates in the Southeastern United States. Environmental Science & Technology 2015;49(24):14195-14203. |
R835403 (2014) R835403 (2015) R835403 (Final) R835399 (Final) R835409 (Final) R835410 (2013) |
Exit Exit Exit |
|
Xu L, Guo H, Boyd CM, Klein M, Bougiatioti A, Cerully KM, Hite JR, Isaacman-VanWertz G, Kreisberg NM, Knote C, Olson K, Koss A, Goldstein AH, Hering SV, de Gouw JA, Baumann K, Lee S-H, Nenes A, Weber RJ, Ng NL. Effects of anthropogenic emissions on aerosol formation from isoprene and monoterpenes in the southeastern United States. Proceedings of the National Academy of Sciences of the United States of America 2015;112(1):37-42. |
R835403 (2014) R835403 (2015) R835403 (Final) R834799 (2015) R834799 (2016) R834799 (Final) R834799C001 (2015) R834799C001 (Final) R835410 (2013) R835410 (2014) R835410 (2015) R835410 (Final) |
Exit Exit Exit |
Supplemental Keywords:
organic nitrates, partitioning, semivolatiles, multifunctional oxidation productsRelevant Websites:
School of Chemical & Biomolecular Engineering at Georgia Tech Exit
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.