Highly functionalized organic nitrates in the southeast United States : Contribution to secondary organic aerosol and reactive nitrogen budgets

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Lee , B H , Mohr , C , Lopez-Hilfiker , F D , Lutz , A , Hallquist , M , Lee , L , Romer , P , Cohen , R C , Iyer , S , Kurten , T , Hu , W , Day , D A , Campuzano-Jost , P , Jimenez , J L , Xu , L , Ng , N L , Guo , H , Weber , R J , Wild , R J , Brown , S S , Koss , A , de Gouw , J , Olson , K , Goldstein , A H , Seco , R , Kim , S , McAvey , K , Shepson , P B , Starn , T , Baumann , K , Edgerton , E S , Liu , J , Shilling , J E , Miller , D O , Brune , W , Schobesberger , S , D'Ambro , E L & Thornton , J A 2016 , ' Highly functionalized organic nitrates in the southeast United States : Contribution to secondary organic aerosol and reactive nitrogen budgets ' , Proceedings of the National Academy of Sciences of the United States of America , vol. 113 , no. 6 , pp. 1516-1521 . https://doi.org/10.1073/pnas.1508108113

Title: Highly functionalized organic nitrates in the southeast United States : Contribution to secondary organic aerosol and reactive nitrogen budgets
Author: Lee, Ben H.; Mohr, Claudia; Lopez-Hilfiker, Felipe D.; Lutz, Anna; Hallquist, Mattias; Lee, Lance; Romer, Paul; Cohen, Ronald C.; Iyer, Siddharth; Kurten, Theo; Hu, Weiwei; Day, Douglas A.; Campuzano-Jost, Pedro; Jimenez, Jose L.; Xu, Lu; Ng, Nga Lee; Guo, Hongyu; Weber, Rodney J.; Wild, Robert J.; Brown, Steven S.; Koss, Abigail; de Gouw, Joost; Olson, Kevin; Goldstein, Allen H.; Seco, Roger; Kim, Saewung; McAvey, Kevin; Shepson, Paul B.; Starn, Tim; Baumann, Karsten; Edgerton, Eric S.; Liu, Jiumeng; Shilling, John E.; Miller, David O.; Brune, William; Schobesberger, Siegfried; D'Ambro, Emma L.; Thornton, Joel A.
Contributor: University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
Date: 2016-02-09
Language: eng
Number of pages: 6
Belongs to series: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
URI: http://hdl.handle.net/10138/195380
Abstract: Speciated particle-phase organic nitrates (pONs) were quantified using online chemical ionization MS during June and July of 2013 in rural Alabama as part of the Southern Oxidant and Aerosol Study. A large fraction of pONs is highly functionalized, possessing between six and eight oxygen atoms within each carbon number group, and is not the common first generation alkyl nitrates previously reported. Using calibrations for isoprene hydroxynitrates and the measured molecular compositions, we estimate that pONs account for 3% and 8% of total submicrometer organic aerosol mass, on average, during the day and night, respectively. Each of the isoprene-and monoterpenes-derived groups exhibited a strong diel trend consistent with the emission patterns of likely biogenic hydrocarbon precursors. An observationally constrained diel box model can replicate the observed pON assuming that pONs (i) are produced in the gas phase and rapidly establish gas-particle equilibrium and (ii) have a short particle-phase lifetime (similar to 2-4 h). Such dynamic behavior has significant implications for the production and phase partitioning of pONs, organic aerosol mass, and reactive nitrogen speciation in a forested environment.
Subject: particulate organic nitrates
online measurement
lifetime calculation
high-resolution time-of-flight chemical ionization mass spectrometer
biogenic volatile organic compound oxidation
ALPHA-PINENE
MASS-SPECTROMETER
PHASE HYDROLYSIS
SOA FORMATION
ISOPRENE
GAS
NOX
OXIDATION
CHEMISTRY
PRODUCTS
116 Chemical sciences
114 Physical sciences
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