Repozitorij Univerze v Novi Gorici

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Naslov:Secondary organic aerosol formation from semi- and intermediate-volatility organic compounds and glyoxal : relevance of O/C as a tracer for aqueous multiphase chemistry
Avtorji:Waxman, Eleanor M. (Avtor)
Džepina, Katja (Avtor)
Ervens, Barbara (Avtor)
Lee-Taylor, Julia (Avtor)
Aumont, Bernard (Avtor)
Jimenez, Jose L. (Avtor)
Madronich, Sasha (Avtor)
Volkamer, Rainer (Avtor)
Datoteke:Gradivo nima datotek. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Neznano ()
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:The role of aqueous multiphase chemistry in the formation of secondary organic aerosol (SOA) remains difficult to quantify. We investigate it here by testing the rapid formation of moderate oxygen-to-carbon (O/C) SOA during a case study in Mexico City. A novel laboratory-based glyoxal-SOA mechanism is applied to the field data, and explains why less gas-phase glyoxal mass is observed than predicted. Furthermore, we compare an explicit gas-phase chemical mechanism for SOA formation from semi- and intermediate-volatility organic compounds (S/IVOCs) with empirical parameterizations of S/IVOC aging. The mechanism representing our current understanding of chemical kinetics of S/IVOC oxidation combined with traditional SOA sources and mixing of background SOA underestimates the observed O/C by a factor of two at noon. Inclusion of glyoxal-SOA with O/C of 1.5 brings O/C predictions within measurement uncertainty, suggesting that field observations can be reconciled on reasonable time scales using laboratory-based empirical relationships for aqueous chemistry.
Ključne besede:secondary organic aerosol, glyoxal, aqueous multiphase chemistry, oxygen-to-carbon ratio, single scattering albedo
Leto izida:2013
Št. strani:str. 978-982
Številčenje:iss. 5, Vol. 40
COBISS_ID:59044867 Povezava se odpre v novem oknu
UDK:54
ISSN pri članku:0094-8276
URN:URN:SI:UNG:REP:MLS5EVLQ
DOI:10.1002/grl.50203 Povezava se odpre v novem oknu
Število ogledov:813
Število prenosov:0
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Gradivo ni uvrščeno v področja.
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Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.

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Gradivo je del revije

Naslov:Geophysical research letters
Skrajšan naslov:Geophys. res. lett.
Založnik:American Geophysical Union.
ISSN:0094-8276
COBISS.SI-ID:16168965 Novo okno

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