Repozitorij Univerze v Novi Gorici

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Naslov:Distribution of gaseous and particulate organic composition during dark α-pinene ozonolysis
Avtorji:Camredon, Marie (Avtor)
Hamilton, Jacqueline F (Avtor)
Alam, Mohammed S (Avtor)
Wyche, Kevin P (Avtor)
Carr, Timo (Avtor)
White, Iain R (Avtor)
Monks, Paul S (Avtor)
Rickard, Andrew R (Avtor)
Bloss, William J (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:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Secondary Organic Aerosol (SOA) affects atmospheric composition, air quality and radiative transfer, however major difficulties are encountered in the development of reliable models for SOA formation. Constraints on processes involved in SOA formation can be obtained by interpreting the speciation and evolution of organics in the gaseous and condensed phase simultaneously. In this study we investigate SOA formation from dark α-pinene ozonolysis with particular emphasis upon the mass distribution of gaseous and particulate organic species. A detailed model for SOA formation is compared with the results from experiments performed in the EUropean PHOtoREactor (EUPHORE) simulation chamber, including on-line gas-phase composition obtained from Chemical-Ionization-Reaction Time-Of-Flight Mass-Spectrometry measurements, and off-line analysis of SOA samples performed by Ion Trap Mass Spectrometry and Liquid Chromatography. The temporal profile of SOA mass concentration is relatively well reproduced by the model. Sensitivity analysis highlights the importance of the choice of vapour pressure estimation method, and the potential influence of condensed phase chemistry. Comparisons of the simulated gaseous-and condensed-phase mass distributions with those observed show a generally good agreement. The simulated speciation has been used to (i) propose a chemical structure for the principal gaseous semi-volatile organic compounds and condensed monomer organic species, (ii) provide evidence for the occurrence of recently suggested radical isomerisation channels not included in the basic model, and (iii) explore the possible contribution of a range of accretion reactions occurring in the condensed phase. We find that oligomer formation through esterification reactions gives the best agreement between the observed and simulated mass spectra
Ključne besede:Aerosol, Aerosol formation, Smog chamber
Leto izida:2010
Št. strani:2893-2917
Številčenje:10, 6
COBISS_ID:5417979 Povezava se odpre v novem oknu
URN:URN:SI:UNG:REP:M7BLYEWZ
DOI:10.5194/acp-10-2893-2010 Povezava se odpre v novem oknu
Licenca:CC BY-SA 4.0
To delo je dosegljivo pod licenco Creative Commons Priznanje avtorstva-Deljenje pod enakimi pogoji 4.0 Mednarodna
Število ogledov:545
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:Atmospheric Chemistry and Physics
Skrajšan naslov:Atmos. Chem. Phys.
Založnik:Copernicus
ISSN:16807316
Leto izida:2010

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