Thermodynamic properties of malonic, succinic, and glutaric acids: evaporation rates and saturation vapor pressures.
This work provides thermodynamic data, in particular, liquid-state saturation vapor pressures of three common slightly water soluble secondary organic aerosol components, namely, malonic, succinic, and glutaric acids. A modified tandem differential mobility analyzer system was used to measure evaporation rates of nanometer sized aqueous malonic, succinic, and glutaric acid droplets at relative humidities and temperatures relevant in the lower troposphere. Liquid phase saturation vapor pressures and other thermodynamic properties were derived from the measurements using a binary condensation model. The obtained expressions for liquid phase saturation vapor pressures compare well with extrapolated literature data. The importance of the choice of method for calculating activity coefficients is discussed.
Koponen
Ismo K
IK
Department of Chemistry and Physical Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen O, Denmark.
Riipinen
Ilona
I
Hienola
Anca
A
Kulmala
Markku
M
Bilde
Merete
M
D005977:Glutarates / Q000737:chemistry*; D006813:Humidity; D008314:Malonates / Q000737:chemistry*; D008956:Models, Chemical; D044367:Phase Transition; D011312:Pressure; D019802:Succinic Acid / Q000737:chemistry*; D013696:Temperature; D013816:Thermodynamics
D005977:Glutarates; D008314:Malonates; C030290:malonic acid; D019802:Succinic Acid; C035736:glutaric acid