Sökning: WFRF:(Kajos M. K.) > Secondary organic a...
Fältnamn | Indikatorer | Metadata |
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000 | 05231naa a2200733 4500 | |
001 | oai:gup.ub.gu.se/189308 | |
003 | SwePub | |
008 | 240528s2013 | |||||||||||000 ||eng| | |
024 | 7 | a https://gup.ub.gu.se/publication/1893082 URI |
024 | 7 | a https://doi.org/10.5194/acp-13-6101-20132 DOI |
040 | a (SwePub)gu | |
041 | a eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Nordin, E. Z.4 aut |
245 | 1 0 | a Secondary organic aerosol formation from idling gasoline passenger vehicle emissions investigated in a smog chamber |
264 | c 2013-06-28 | |
264 | 1 | b 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 | 7 | a NATURVETENSKAPx Kemi0 (SwePub)1042 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciences0 (SwePub)1042 hsv//eng |
650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Meteorologi och atmosfärforskning0 (SwePub)105082 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Meteorology and Atmospheric Sciences0 (SwePub)105082 hsv//eng |
650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Miljövetenskap0 (SwePub)105022 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Environmental Sciences0 (SwePub)105022 hsv//eng |
650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Klimatforskning0 (SwePub)105012 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Climate Research0 (SwePub)105012 hsv//eng |
650 | 7 | a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng |
650 | 7 | a NATURVETENSKAPx Kemix Analytisk kemi0 (SwePub)104012 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Analytical Chemistry0 (SwePub)104012 hsv//eng |
650 | 7 | a NATURVETENSKAPx Kemix Organisk kemi0 (SwePub)104052 hsv//swe |
650 | 7 | a 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 | |
700 | 1 | a Eriksson, A. C.4 aut |
700 | 1 | a Roldin, P.4 aut |
700 | 1 | a Nilsson, P. T.4 aut |
700 | 1 | a Carlsson, J. E.4 aut |
700 | 1 | a Kajos, M. K.4 aut |
700 | 1 | a Hellen, H.4 aut |
700 | 1 | a Wittbom, C.4 aut |
700 | 1 | a Rissler, J.4 aut |
700 | 1 | a Londahl, J.4 aut |
700 | 1 | a Swietlicki, E.4 aut |
700 | 1 | a Svenningsson, B.4 aut |
700 | 1 | a Bohgard, M.4 aut |
700 | 1 | a Kulmala, M.4 aut |
700 | 1 | a Hallquist, Mattias,d 1969u Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology4 aut0 (Swepub:gu)xhamat |
700 | 1 | a Pagels, J. H.4 aut |
710 | 2 | a Göteborgs universitetb Institutionen för kemi och molekylärbiologi4 org |
773 | 0 | t Atmospheric Chemistry and Physicsd : Copernicus GmbHg 13:12, s. 6101-6116q 13:12<6101-6116x 1680-7316x 1680-7324 |
856 | 4 | u https://www.atmos-chem-phys.net/13/6101/2013/acp-13-6101-2013.pdf |
856 | 4 8 | u https://gup.ub.gu.se/publication/189308 |
856 | 4 8 | u https://doi.org/10.5194/acp-13-6101-2013 |
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