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Göteborgs universitets publikationer

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

Författare och institution:
Ben H Lee (-); Claudia Mohr (-); Felipe D Lopez-Hilfiker (-); Anna Lutz (Institutionen för kemi och molekylärbiologi); Mattias Hallquist (Institutionen för kemi och molekylärbiologi); Lance Lee (-); Paul Romer (-); Ronald C Cohen (-); Siddharth Iyer (-); Theo Kurtén (-); Weiwei Hu (-); Douglas A Day (-); Pedro Campuzano-Jost (-); Jose L Jimenez (-); Lu Xu (-); Nga Lee Ng (-); Hongyu Guo (-); Rodney J Weber (-); Robert J Wild (-); Steven S Brown (-); Abigail Koss (-); Joost de Gouw (-); Kevin Olson (-); Allen H Goldstein (-); Roger Seco (-); Saewung Kim (-); Kevin McAvey (-); Paul B Shepson (-); Tim Starn (-); Karsten Baumann (-); Eric S Edgerton (-); Jiumeng Liu (-); John E Shilling (-); David O Miller (-); William Brune (-); Siegfried Schobesberger (-); Emma L D'Ambro (-); Joel A Thornton (-)
Publicerad i:
Proceedings of the National Academy of Sciences of the United States of America, 113 ( 6 ) s. 1516-21
Artikel, refereegranskad vetenskaplig
Sammanfattning (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 (∼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.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Kemi ->
Analytisk kemi
Kemi ->
Organisk kemi
Geovetenskap och miljövetenskap ->
Geovetenskap och miljövetenskap ->
Miljövetenskap ->
Geovetenskap och miljövetenskap ->
Meteorologi och atmosfärforskning
Postens nummer:
Posten skapad:
2016-02-18 14:29
Posten ändrad:
2016-03-16 12:56

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