Solid state and sub-cooled liquid vapour pressures of substituted dicarboxylic acids using Knudsen Effusion Mass Spectrometry (KEMS) and Differential Scanning Calorimetry
Open Access
- 26 May 2010
- journal article
- research article
- Published by Copernicus GmbH in Atmospheric Chemistry and Physics
- Vol. 10 (10), 4879-4892
- https://doi.org/10.5194/acp-10-4879-2010
Abstract
Solid state vapour pressures of a selection of atmospherically important substituted dicarboxylic acids have been measured using Knudsen Effusion Mass Spectrometry (KEMS) over a range of 20 K (298–318 K). Enthalpies of fusion and melting points obtained using Differential Scanning Calorimetry (DSC) were used to obtain sub-cooled liquid vapour pressures. They have been compared to estimation methods used on the E-AIM website. These methods are shown to poorly represent – OH groups in combination with COOH groups. Partitioning calculations have been performed to illustrate the impact of the different estimation methods on organic aerosol mass compared to the use of experimental data.Keywords
This publication has 44 references indexed in Scilit:
- The critical assessment of vapour pressure estimation methods for use in modelling the formation of atmospheric organic aerosolAtmospheric Chemistry and Physics, 2010
- Estimation of pure component properties: Part 3. Estimation of the vapor pressure of non-electrolyte organic compounds via group contributions and group interactionsFluid Phase Equilibria, 2008
- Effects of uncertainties in the thermodynamic properties of aerosol components in an air quality model – Part 2: Predictions of the vapour pressures of organic compoundsAtmospheric Chemistry and Physics, 2008
- Ubiquity and dominance of oxygenated species in organic aerosols in anthropogenically‐influenced Northern Hemisphere midlatitudesGeophysical Research Letters, 2007
- Vaporization, fusion and sublimation enthalpies of the dicarboxylic acids from C4 to C14 and C16The Journal of Chemical Thermodynamics, 2005
- Atmospheric aerosol models for systems including the ions H+, NH4+, Na+, SO42−, NO3−, Cl−, Br−, and H2OJournal of Geophysical Research: Atmospheres, 2002
- Thermodynamic study on the sublimation of succinic acid and of methyl- and dimethyl-substituted succinic and glutaric acidsThe Journal of Chemical Thermodynamics, 2001
- Vapour pressures and the enthalpies and entropies of sublimation of five dicarboxylic acidsThe Journal of Chemical Thermodynamics, 1999
- ESTIMATION OF PURE-COMPONENT PROPERTIES FROM GROUP-CONTRIBUTIONSChemical Engineering Communications, 1987
- Motor exhaust emissions as a primary source for dicarboxylic acids in Los Angeles ambient airEnvironmental Science & Technology, 1987