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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005231naa a2200733 4500
001oai:gup.ub.gu.se/189308
003SwePub
008240528s2013 | |||||||||||000 ||eng|
0247 a https://gup.ub.gu.se/publication/1893082 URI
0247 a https://doi.org/10.5194/acp-13-6101-20132 DOI
040 a (SwePub)gu
041 a eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Nordin, E. Z.4 aut
2451 0a Secondary organic aerosol formation from idling gasoline passenger vehicle emissions investigated in a smog chamber
264 c 2013-06-28
264 1b Copernicus GmbH,c 2013
520 a Gasoline vehicles have recently been pointed out as potentially the main source of anthropogenic secondary organic aerosol (SOA) in megacities. However, there is a lack of laboratory studies to systematically investigate SOA formation in real-world exhaust. In this study, SOA formation from pure aromatic precursors, idling and cold start gasoline exhaust from three passenger vehicles (EURO2-EURO4) were investigated with photo-oxidation experiments in a 6 m(3) smog chamber. The experiments were carried out down to atmospherically relevant organic aerosol mass concentrations. The characterization instruments included a high-resolution aerosol mass spectrometer and a proton transfer mass spectrometer. It was found that gasoline exhaust readily forms SOA with a signature aerosol mass spectrum similar to the oxidized organic aerosol that commonly dominates the organic aerosol mass spectra downwind of urban areas. After a cumulative OH exposure of similar to 5 x 10(6) cm(-3) h, the formed SOA was 1-2 orders of magnitude higher than the primary OA emissions. The SOA mass spectrum from a relevant mixture of traditional light aromatic precursors gave f(43) (mass fraction at m/z = 43), approximately two times higher than to the gasoline SOA. However O:C and H:C ratios were similar for the two cases. Classical C-6-C-9 light aromatic precursors were responsible for up to 60% of the formed SOA, which is significantly higher than for diesel exhaust. Important candidates for additional precursors are higher-order aromatic compounds such as C-10 and C-11 light aromatics, naphthalene and methyl-naphthalenes. We conclude that approaches using only light aromatic precursors give an incomplete picture of the magnitude of SOA formation and the SOA composition from gasoline exhaust.
650 7a NATURVETENSKAPx Kemi0 (SwePub)1042 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciences0 (SwePub)1042 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Meteorologi och atmosfärforskning0 (SwePub)105082 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Meteorology and Atmospheric Sciences0 (SwePub)105082 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Miljövetenskap0 (SwePub)105022 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Environmental Sciences0 (SwePub)105022 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Klimatforskning0 (SwePub)105012 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Climate Research0 (SwePub)105012 hsv//eng
650 7a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng
650 7a NATURVETENSKAPx Kemix Analytisk kemi0 (SwePub)104012 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Analytical Chemistry0 (SwePub)104012 hsv//eng
650 7a NATURVETENSKAPx Kemix Organisk kemi0 (SwePub)104052 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Organic Chemistry0 (SwePub)104052 hsv//eng
653 a mass-spectrometer
653 a m-xylene
653 a ptr-ms
653 a photochemical oxidation
653 a high-resolution
653 a motor-vehicles
653 a air-pollution
653 a cold-start
653 a photooxidation
653 a impact
7001 a Eriksson, A. C.4 aut
7001 a Roldin, P.4 aut
7001 a Nilsson, P. T.4 aut
7001 a Carlsson, J. E.4 aut
7001 a Kajos, M. K.4 aut
7001 a Hellen, H.4 aut
7001 a Wittbom, C.4 aut
7001 a Rissler, J.4 aut
7001 a Londahl, J.4 aut
7001 a Swietlicki, E.4 aut
7001 a Svenningsson, B.4 aut
7001 a Bohgard, M.4 aut
7001 a Kulmala, M.4 aut
7001 a Hallquist, Mattias,d 1969u Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology4 aut0 (Swepub:gu)xhamat
7001 a Pagels, J. H.4 aut
7102 a Göteborgs universitetb Institutionen för kemi och molekylärbiologi4 org
7730 t Atmospheric Chemistry and Physicsd : Copernicus GmbHg 13:12, s. 6101-6116q 13:12<6101-6116x 1680-7316x 1680-7324
8564 u https://www.atmos-chem-phys.net/13/6101/2013/acp-13-6101-2013.pdf
8564 8u https://gup.ub.gu.se/publication/189308
8564 8u https://doi.org/10.5194/acp-13-6101-2013

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