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Gas-Particle Partit...
Gas-Particle Partitioning and SOA Yields of Organonitrate Products from NO3-Initiated Oxidation of Isoprene under Varied Chemical Regimes
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Brownwood, B. (author)
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Turdziladze, A. (author)
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Hohaus, T. (author)
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Wu, R. R. (author)
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Mentel, T. F. (author)
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Carlsson, P. T. M. (author)
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- Tsiligiannis, Epameinondas (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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- Hallquist, Mattias, 1969 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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Andres, S. (author)
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Hantschke, L. (author)
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Reimer, D. (author)
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Rohrer, F. (author)
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Tillmann, R. (author)
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Winter, B. (author)
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Liebmann, J. (author)
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Brown, S. S. (author)
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Kiendler-Scharr, A. (author)
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Novelli, A. (author)
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Fuchs, H. (author)
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Fry, J. L. (author)
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(creator_code:org_t)
- 2021-03-11
- 2021
- English.
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In: Acs Earth and Space Chemistry. - : American Chemical Society (ACS). - 2472-3452. ; 5:4, s. 785-800
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https://pubs.acs.org...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
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- Alkyl nitrate (AN) and secondary organic aerosol (SOA) from the reaction of nitrate radicals (NO3) with isoprene were observed in the Simulation of Atmospheric PHotochemistry In a large Reaction (SAPHIR) chamber during the NO(3)Isop campaign in August 2018. Based on 15 day-long experiments under various reaction conditions, we conclude that the reaction has a nominally unity molar AN yield (observed range 90 +/- 40%) and an SOA mass yield of OA + organic nitrate aerosol of 13-15% (with similar to 50 mu g m(-3) inorganic seed aerosol and 2-5 mu g m-3 total organic aerosol). Isoprene (5-25 ppb) and oxidant (typically similar to 100 ppb O-3 and 5-25 ppb NO2) concentrations and aerosol composition (inorganic and organic coating) were varied while remaining close to ambient conditions, producing similar AN and SOA yields under all regimes. We observe the formation of dinitrates upon oxidation of the second double bond only once the isoprene precursor is fully consumed. We determine the bulk partitioning coefficient for ANs (K-p similar to 10(-3) m(3) mu g(-1)), indicating an average volatility corresponding to a C-5 hydroxy hydroperoxy nitrate.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Keyword
- isoprene
- nitrate
- oxidation mechanism
- peroxy radicals
- gas-aerosol
- partitioning
- secondary organic aerosol
- secondary organic aerosol
- nitrate radical oxidation
- ring-down
- spectrometer
- no3
- chemistry
- model
- n2o5
- Chemistry
- Geochemistry & Geophysics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Brownwood, B.
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Turdziladze, A.
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Hohaus, T.
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Wu, R. R.
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Mentel, T. F.
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Carlsson, P. T. ...
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show more...
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Tsiligiannis, Ep ...
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Hallquist, Matti ...
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Andres, S.
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Hantschke, L.
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Reimer, D.
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Rohrer, F.
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Tillmann, R.
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Winter, B.
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Liebmann, J.
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Brown, S. S.
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Kiendler-Scharr, ...
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Novelli, A.
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Fuchs, H.
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Fry, J. L.
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show less...
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