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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005773naa a2200709 4500
001oai:gup.ub.gu.se/320602
003SwePub
008240528s2022 | |||||||||||000 ||eng|
0247 a https://gup.ub.gu.se/publication/3206022 URI
0247 a https://doi.org/10.5194/acp-22-14147-20222 DOI
040 a (SwePub)gu
041 a eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Voliotis, A.4 aut
2451 0a Chamber investigation of the formation and transformation of secondary organic aerosol in mixtures of biogenic and anthropogenic volatile organic compounds
264 c 2022-11-04
264 1b Copernicus GmbH,c 2022
520 a A comprehensive chamber investigation of photochemical secondary organic aerosol (SOA) formation and transformation in mixtures of anthropogenic (o-cresol) and biogenic (alpha-pinene and isoprene) volatile organic compound (VOC) precursors in the presence of NOx and inorganic seed particles was conducted. To enable direct comparison across systems, the initial concentration (hence reactivity) of the systems towards the dominant OH oxidant was adjusted. Comparing experiments conducted in single-precursor systems at various initial reactivity levels (referenced to a nominal base case VOC concentration, e.g. halving the initial concentration for a 1/2 initial reactivity experiment) as well as their binary and ternary mixtures, we show that the molecular interactions from the mixing of the precursors can be investigated and discuss challenges in their interpretation. The observed average SOA particle mass yields (the organic particle mass produced for a mass of VOC consumed) in descending order were found for the following systems: alpha-pinene (32 +/- 7 %), alpha-pinene-o-cresol (28 +/- 9 %), alpha-pinene at 1/2 initial reactivity (21 +/- 5 %), alpha-pinene-isoprene (16 +/- 1 %), alpha-pinene at 1/3 initial reactivity (15 +/- 4 %), o-cresol (13 +/- 3 %), alpha-pinene-o-cresol-isoprene (11 +/- 4 %), o-cresol at 1/2 initial reactivity (11 +/- 3 %), o-cresol-isoprene (6 +/- 2 %), and isoprene (0 +/- 0 %). We find a clear suppression of the SOA mass yield from alpha-pinene when it is mixed with isoprene, whilst no suppression or enhancement of SOA particle yield from o-cresol was found when it was similarly mixed with isoprene. The alpha-pinene-o-cresol system yield appeared to be increased compared to that calculated based on the additivity, whilst in the alpha-pinene-o-cresol-isoprene system the measured and predicted yields were comparable. However, in mixtures in which more than one precursor contributes to the SOA particle mass it is unclear whether changes in the SOA formation potential are attributable to physical or chemical interactions, since the reference basis for the comparison is complex. Online and offline chemical composition as well as SOA particle volatility, water uptake, and "phase" behaviour measurements that were used to interpret the SOA formation and behaviour are introduced and detailed elsewhere.
650 7a NATURVETENSKAPx Kemi0 (SwePub)1042 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciences0 (SwePub)1042 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 Kemix Analytisk kemi0 (SwePub)104012 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Analytical Chemistry0 (SwePub)104012 hsv//eng
650 7a NATURVETENSKAPx Kemix Annan kemi0 (SwePub)104992 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Other Chemistry Topics0 (SwePub)104992 hsv//eng
650 7a NATURVETENSKAPx Kemix Organisk kemi0 (SwePub)104052 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Organic Chemistry0 (SwePub)104052 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 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
653 a vapor wall loss
653 a gas-phase reactions
653 a atmospheric chemistry
653 a particle
653 a formation
653 a photochemical data
653 a soa formation
653 a alpha-pinene
653 a chemical-composition
653 a oxidation-products
653 a radical chemistry
653 a Environmental Sciences & Ecology
653 a Meteorology & Atmospheric Sciences
7001 a Du, M.4 aut
7001 a Wang, Y.4 aut
7001 a Shao, Y. Q.4 aut
7001 a Alfarra, M. R.4 aut
7001 a Bannan, T. J.4 aut
7001 a Hu, D. W.4 aut
7001 a Pereira, K. L.4 aut
7001 a Hamilton, J. F.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 Mentel, T. F.4 aut
7001 a McFiggans, G.4 aut
7102 a Göteborgs universitetb Institutionen för kemi och molekylärbiologi4 org
7730 t Atmospheric Chemistry and Physicsd : Copernicus GmbHg 22:21, s. 14147-14175q 22:21<14147-14175x 1680-7316x 1680-7324
8564 8u https://gup.ub.gu.se/publication/320602
8564 8u https://doi.org/10.5194/acp-22-14147-2022

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