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Chlorine oxidation ...
Chlorine oxidation of VOCs at a semi-rural site in Beijing: significant chlorine liberation from ClNO2 and subsequent gas- and particle-phase Cl-VOC production
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- Le Breton, Michael, 1986 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
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- Pathak, Ravi K. (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
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- Simpson, David, 1961 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Meteorologisk institutt,Norwegian Meteorological Institute
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- Johansson, John, 1982 (author)
- Beijing University of Technology,Chalmers tekniska högskola,Chalmers University of Technology,University of Manchester
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Johansson, J. (author)
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- Zheng, J. (author)
- Beijing University of Technology
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- Yang, Y. D. (author)
- Beijing University of Technology
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- Shang, D. J. (author)
- Beijing University of Technology
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- Wang, H. C. (author)
- Beijing University of Technology,City University of Hong Kong
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- Liu, Q. Y. (author)
- Hong Kong University of Science and Technology
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Chan, C. (author)
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- Wang, T. (author)
- Gothenburg University,Göteborgs universitet,Extern,Institutionen för kemi och molekylärbiologi,External,Department of Chemistry and Molecular Biology,Hong Kong Polytechnic University
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Bannan, T. J. (author)
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- Priestley, M. (author)
- University of Manchester
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Percival, C. J. (author)
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- Shallcross, D. E. (author)
- University of the Western Cape,University of Bristol
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- Lu, K. D. (author)
- Beijing University of Technology
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- Guo, S. (author)
- Beijing University of Technology
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- Hu, M. (author)
- Beijing University of Technology
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- Hallquist, Mattias, 1969 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,IVL Svenska Miljöinstitutet AB,IVL Swedish Environmental Research Institute,University of Gothenburg
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- Hallquist, Åsa (author)
- IVL Svenska Miljöinstitutet
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(creator_code:org_t)
- 2018-09-11
- 2018
- English.
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In: Atmospheric Chemistry and Physics. - : Copernicus GmbH. - 1680-7316 .- 1680-7324. ; 18:17, s. 13013-13030:18, s. 13013-13030
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https://doi.org/10.5...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Nitryl chloride (ClNO2) accumulation at night acts as a significant reservoir for active chlorine and impacts the following day's photochemistry when the chlorine atom is liberated at sunrise. Here, we report simultaneous measurements of N2O5 and a suite of inorganic halogens including ClNO2 and reactions of chloride with volatile organic compounds (Cl-VOCs) in the gas and particle phases utilising the Filter Inlet for Gas and AEROsols time-of-flight chemical ionisation mass spectrometer (FIGAERO-ToF-CIMS) during an intensive measurement campaign 40 km northwest of Beijing in May and June 2016. A maximum mixing ratio of 2900 ppt of ClNO2 was observed with a mean campaign nighttime mixing ratio of 487 ppt, appearing to have an anthropogenic source supported by correlation with SO2, CO and benzene, which often persisted at high levels after sunrise until midday. This was attributed to such high mixing ratios persisting after numerous e-folding times of the photolytic lifetime enabling the chlorine atom production to reach 2.3 x 10(5) molecules cm(-3) from ClNO2 alone, peaking at 09:30 LT and up to 8.4 x 10(5) molecules cm(-3) when including the supporting inorganic halogen measurements. Cl-VOCs were observed in the particle and gas phases for the first time at high time resolution and illustrate how the iodide ToF-CIMS can detect unique markers of chlorine atom chemistry in ambient air from both biogenic and anthropogenic sources. Their presence and abundance can be explained via time series of their measured and steady-state calculated precursors, enabling the assessment of competing OH and chlorine atom oxidation via measurements of products from both of these mechanisms and their relative contribution to secondary organic aerosol (SOA) formation.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic 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 -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Keyword
- secondary organic aerosol
- n2o5 uptake coefficients
- nitryl chloride
- boundary-layer
- mass-spectrometer
- initiated oxidation
- ozone
- production
- high-resolution
- atom chemistry
- northern china
- Meteorology & Atmospheric Sciences
- FIGAERO-ToF-CIMS
Publication and Content Type
- ref (subject category)
- art (subject category)
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Le Breton, Micha ...
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Pathak, Ravi K.
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Simpson, David, ...
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Johansson, John, ...
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Johansson, J.
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Zheng, J.
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Yang, Y. D.
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Shang, D. J.
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Wang, H. C.
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Liu, Q. Y.
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Chan, C.
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Wang, T.
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Bannan, T. J.
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Priestley, M.
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Percival, C. J.
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Shallcross, D. E ...
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Lu, K. D.
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Guo, S.
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Hu, M.
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Hallquist, Matti ...
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Hallquist, Åsa
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- By the university
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University of Gothenburg
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Chalmers University of Technology
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IVL Swedish Environmental Research Institute