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Exploring sources of biogenic secondary organic aerosol compounds using chemical analysis and the FLEXPART model

Martinsson, Johan LU ; Monteil, Guillaume LU ; Sporre, Moa K. LU ; Hansen, Anne Maria Kaldal; Kristensson, Adam LU ; Stenström, Kristina Eriksson LU ; Swietlicki, Erik LU and Glasius, Marianne (2017) In Atmospheric Chemistry and Physics 17(18). p.11025-11040
Abstract

Molecular tracers in secondary organic aerosols (SOAs) can provide information on origin of SOA, as well as regional scale processes involved in their formation. In this study 9 carboxylic acids, 11 organosulfates (OSs) and 2 nitrooxy organosulfates (NOSs) were determined in daily aerosol particle filter samples from Vavihill measurement station in southern Sweden during June and July 2012. Several of the observed compounds are photo-oxidation products from biogenic volatile organic compounds (BVOCs). Highest average mass concentrations were observed for carboxylic acids derived from fatty acids and monoterpenes (12. 3 ± 15. 6 and 13. 8 ± 11. 6 ng mg-3, respectively). The FLEXPART model was used to link nine specific surface... (More)

Molecular tracers in secondary organic aerosols (SOAs) can provide information on origin of SOA, as well as regional scale processes involved in their formation. In this study 9 carboxylic acids, 11 organosulfates (OSs) and 2 nitrooxy organosulfates (NOSs) were determined in daily aerosol particle filter samples from Vavihill measurement station in southern Sweden during June and July 2012. Several of the observed compounds are photo-oxidation products from biogenic volatile organic compounds (BVOCs). Highest average mass concentrations were observed for carboxylic acids derived from fatty acids and monoterpenes (12. 3 ± 15. 6 and 13. 8 ± 11. 6 ng mg-3, respectively). The FLEXPART model was used to link nine specific surface types to single measured compounds. It was found that the surface category sea and ocean was dominating the air mass exposure (56 %) but contributed to low mass concentration of observed chemical compounds. A principal component (PC) analysis identified four components, where the one with highest explanatory power (49 %) displayed clear impact of coniferous forest on measured mass concentration of a majority of the compounds. The three remaining PCs were more difficult to interpret, although azelaic, suberic, and pimelic acid were closely related to each other but not to any clear surface category. Hence, future studies should aim to deduce the biogenic sources and surface category of these compounds. This study bridges micro-level chemical speciation to air mass surface exposure at the macro level.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Atmospheric Chemistry and Physics
volume
17
issue
18
pages
16 pages
publisher
Copernicus Gesellschaft Mbh
external identifiers
  • scopus:85029575047
  • wos:000410989900001
ISSN
1680-7316
DOI
10.5194/acp-17-11025-2017
language
English
LU publication?
yes
id
3ef0afe2-abf4-407b-abb8-1a22ab7eef0e
date added to LUP
2017-09-29 09:38:18
date last changed
2018-01-16 13:19:58
@article{3ef0afe2-abf4-407b-abb8-1a22ab7eef0e,
  abstract     = {<p>Molecular tracers in secondary organic aerosols (SOAs) can provide information on origin of SOA, as well as regional scale processes involved in their formation. In this study 9 carboxylic acids, 11 organosulfates (OSs) and 2 nitrooxy organosulfates (NOSs) were determined in daily aerosol particle filter samples from Vavihill measurement station in southern Sweden during June and July 2012. Several of the observed compounds are photo-oxidation products from biogenic volatile organic compounds (BVOCs). Highest average mass concentrations were observed for carboxylic acids derived from fatty acids and monoterpenes (12. 3 ± 15. 6 and 13. 8 ± 11. 6 ng mg<sup>-3</sup>, respectively). The FLEXPART model was used to link nine specific surface types to single measured compounds. It was found that the surface category sea and ocean was dominating the air mass exposure (56 %) but contributed to low mass concentration of observed chemical compounds. A principal component (PC) analysis identified four components, where the one with highest explanatory power (49 %) displayed clear impact of coniferous forest on measured mass concentration of a majority of the compounds. The three remaining PCs were more difficult to interpret, although azelaic, suberic, and pimelic acid were closely related to each other but not to any clear surface category. Hence, future studies should aim to deduce the biogenic sources and surface category of these compounds. This study bridges micro-level chemical speciation to air mass surface exposure at the macro level.</p>},
  author       = {Martinsson, Johan and Monteil, Guillaume and Sporre, Moa K. and Hansen, Anne Maria Kaldal and Kristensson, Adam and Stenström, Kristina Eriksson and Swietlicki, Erik and Glasius, Marianne},
  issn         = {1680-7316},
  language     = {eng},
  month        = {09},
  number       = {18},
  pages        = {11025--11040},
  publisher    = {Copernicus Gesellschaft Mbh},
  series       = {Atmospheric Chemistry and Physics},
  title        = {Exploring sources of biogenic secondary organic aerosol compounds using chemical analysis and the FLEXPART model},
  url          = {http://dx.doi.org/10.5194/acp-17-11025-2017},
  volume       = {17},
  year         = {2017},
}