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Volatility of Organic Aerosol: Evaporation of Ammonium Sulfate/Succinic Acid Aqueous Solution Droplets

Yli-Juuti, Taina; Zardini, Alessandro A.; Eriksson, Axel LU ; Hansen, Anne Maria K.; Pagels, Joakim LU ; Swietlicki, Erik LU ; Svenningsson, Birgitta LU ; Glasius, Marianne; Worsnop, Douglas R. and Riipinen, Ilona, et al. (2013) In Environmental Science & Technology 47(21). p.12123-12130
Abstract
Condensation and evaporation modify the properties and effects of atmospheric aerosol particles. We studied the evaporation of aqueous succinic acid and succinic acid/ammonium sulfate droplets to obtain insights on the effect of ammonium sulfate on the gas/particle partitioning of atmospheric organic acids. Droplet evaporation in a laminar flow tube was measured in a Tandem Differential Mobility Analyzer setup. A wide range of droplet compositions was investigated, and for some of the experiments the composition was tracked using an Aerosol Mass Spectrometer. The measured evaporation was compared to model predictions where the ammonium sulfate was assumed not to directly affect succinic acid evaporation. The model captured the evaporation... (More)
Condensation and evaporation modify the properties and effects of atmospheric aerosol particles. We studied the evaporation of aqueous succinic acid and succinic acid/ammonium sulfate droplets to obtain insights on the effect of ammonium sulfate on the gas/particle partitioning of atmospheric organic acids. Droplet evaporation in a laminar flow tube was measured in a Tandem Differential Mobility Analyzer setup. A wide range of droplet compositions was investigated, and for some of the experiments the composition was tracked using an Aerosol Mass Spectrometer. The measured evaporation was compared to model predictions where the ammonium sulfate was assumed not to directly affect succinic acid evaporation. The model captured the evaporation rates for droplets with large organic content but overestimated the droplet size change when the molar concentration of succinic acid was similar to or lower than that of ammonium sulfate, suggesting that ammonium sulfate enhances the partitioning of dicarboxylic acids to aqueous particles more than currently expected from simple mixture thermodynamics. If extrapolated to the real atmosphere, these results imply enhanced partitioning of secondary organic compounds to particulate phase in environments dominated by inorganic aerosol. (Less)
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published
subject
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Environmental Science & Technology
volume
47
issue
21
pages
12123 - 12130
publisher
The American Chemical Society
external identifiers
  • wos:000326711300033
  • scopus:84887901414
ISSN
1520-5851
DOI
10.1021/es401233c
project
MERGE
language
English
LU publication?
yes
id
793ddb90-e93e-4d54-8598-76253a76bc7d (old id 4198001)
date added to LUP
2014-01-13 13:28:32
date last changed
2019-05-16 02:19:18
@article{793ddb90-e93e-4d54-8598-76253a76bc7d,
  abstract     = {Condensation and evaporation modify the properties and effects of atmospheric aerosol particles. We studied the evaporation of aqueous succinic acid and succinic acid/ammonium sulfate droplets to obtain insights on the effect of ammonium sulfate on the gas/particle partitioning of atmospheric organic acids. Droplet evaporation in a laminar flow tube was measured in a Tandem Differential Mobility Analyzer setup. A wide range of droplet compositions was investigated, and for some of the experiments the composition was tracked using an Aerosol Mass Spectrometer. The measured evaporation was compared to model predictions where the ammonium sulfate was assumed not to directly affect succinic acid evaporation. The model captured the evaporation rates for droplets with large organic content but overestimated the droplet size change when the molar concentration of succinic acid was similar to or lower than that of ammonium sulfate, suggesting that ammonium sulfate enhances the partitioning of dicarboxylic acids to aqueous particles more than currently expected from simple mixture thermodynamics. If extrapolated to the real atmosphere, these results imply enhanced partitioning of secondary organic compounds to particulate phase in environments dominated by inorganic aerosol.},
  author       = {Yli-Juuti, Taina and Zardini, Alessandro A. and Eriksson, Axel and Hansen, Anne Maria K. and Pagels, Joakim and Swietlicki, Erik and Svenningsson, Birgitta and Glasius, Marianne and Worsnop, Douglas R. and Riipinen, Ilona and Bilde, Merete},
  issn         = {1520-5851},
  language     = {eng},
  number       = {21},
  pages        = {12123--12130},
  publisher    = {The American Chemical Society},
  series       = {Environmental Science & Technology},
  title        = {Volatility of Organic Aerosol: Evaporation of Ammonium Sulfate/Succinic Acid Aqueous Solution Droplets},
  url          = {http://dx.doi.org/10.1021/es401233c},
  volume       = {47},
  year         = {2013},
}