Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Secondary organic aerosol formation from gasoline passenger vehicle emissions investigated in a smog chamber

Nordin, E. Z. ; Eriksson, A. C. ; Roldin, Pontus LU ; Nilsson, P. T. ; Carlsson, J. E. ; Kajos, M. K. ; Hellén, H. ; Wittbom, Cerina LU orcid ; Rissler, Jenny LU and Löndahl, Jakob LU orcid , et al. (2012) In Atmospheric Chemistry and Physics Discussions 12(12). p.31725-31765
Abstract
Gasoline vehicles have elevated emissions of volatile organic compounds during cold
starts and idling and have recently been pointed out as potentially the main source
of anthropogenic secondary organic aerosol (SOA) in megacities. However, there is
5 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 one Euro II, one Euro III and one Euro IV passenger vehicles were investigated using photo-oxidation experiments in a 6 m3
smog chamber.
The experiments were carried out at atmospherically relevant organic aerosol mass
10 concentrations. The characterization... (More)
Gasoline vehicles have elevated emissions of volatile organic compounds during cold
starts and idling and have recently been pointed out as potentially the main source
of anthropogenic secondary organic aerosol (SOA) in megacities. However, there is
5 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 one Euro II, one Euro III and one Euro IV passenger vehicles were investigated using photo-oxidation experiments in a 6 m3
smog chamber.
The experiments were carried out at atmospherically relevant organic aerosol mass
10 concentrations. The characterization methods 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
urban areas. After 4 h aging the formed SOA was 1–2 orders of magnitude higher than
15 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 C6–C9
light aromatic precursors were responsible for up to
60 % of the formed SOA, which is significantly higher than for diesel exhaust. Impor20 tant candidates for additional precursors are higher order aromatic compounds such
as C10, C11 light aromatics, naphthalene and methyl-naphthalenes. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; ; ; ; ; ; and (Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Atmospheric Chemistry and Physics Discussions
volume
12
issue
12
pages
41 pages
publisher
Copernicus GmbH
ISSN
1680-7375
DOI
10.5194/acpd-12-31725-2012
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Nuclear Physics (Faculty of Technology) (011013007), Ergonomics and Aerosol Technology (011025002), External organization(s) (LUR000040), Pufendorf Institute (016501030)
id
097466fc-bc14-4996-8b88-2e4dfb1876a7 (old id 4154993)
date added to LUP
2016-04-01 11:05:24
date last changed
2021-10-30 02:28:38
@article{097466fc-bc14-4996-8b88-2e4dfb1876a7,
  abstract     = {{Gasoline vehicles have elevated emissions of volatile organic compounds during cold<br/>starts and idling and have recently been pointed out as potentially the main source<br/>of anthropogenic secondary organic aerosol (SOA) in megacities. However, there is<br/>5 a lack of laboratory studies to systematically investigate SOA formation in real-world<br/>exhaust. In this study, SOA formation from pure aromatic precursors, idling and cold<br/>start gasoline exhaust from one Euro II, one Euro III and one Euro IV passenger vehicles were investigated using photo-oxidation experiments in a 6 m3<br/>smog chamber.<br/>The experiments were carried out at atmospherically relevant organic aerosol mass<br/>10 concentrations. The characterization methods included a high resolution aerosol mass<br/>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<br/>organic aerosol that commonly dominates the organic aerosol mass spectra downwind<br/>urban areas. After 4 h aging the formed SOA was 1–2 orders of magnitude higher than<br/>15 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<br/>two times higher than to the gasoline SOA. However O : C and H : C ratios were similar<br/>for the two cases. Classical C6–C9<br/>light aromatic precursors were responsible for up to<br/>60 % of the formed SOA, which is significantly higher than for diesel exhaust. Impor20 tant candidates for additional precursors are higher order aromatic compounds such<br/>as C10, C11 light aromatics, naphthalene and methyl-naphthalenes.}},
  author       = {{Nordin, E. Z. and Eriksson, A. C. and Roldin, Pontus and Nilsson, P. T. and Carlsson, J. E. and Kajos, M. K. and Hellén, H. and Wittbom, Cerina and Rissler, Jenny and Löndahl, Jakob and Swietlicki, Erik and Svenningsson, Birgitta and Bohgard, Mats and Kulmala, M. and Hallquist, M. and Pagels, Joakim}},
  issn         = {{1680-7375}},
  language     = {{eng}},
  number       = {{12}},
  pages        = {{31725--31765}},
  publisher    = {{Copernicus GmbH}},
  series       = {{Atmospheric Chemistry and Physics Discussions}},
  title        = {{Secondary organic aerosol formation from gasoline passenger vehicle emissions investigated in a smog chamber}},
  url          = {{http://dx.doi.org/10.5194/acpd-12-31725-2012}},
  doi          = {{10.5194/acpd-12-31725-2012}},
  volume       = {{12}},
  year         = {{2012}},
}