Determination of evaporation coefficients of semi-volatile organic aerosols using an integrated volume—tandem differential mobility analysis (IV-TDMA) method

Saleh, Rawad; Shihadeh, Alan; Khlystov, Andrey

doi:10.1016/j.jaerosci.2009.09.008

Cited by 36 publications

(57 citation statements)

References 43 publications

(49 reference statements)

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“…1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 46 symbols in Figure 8. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Using all the solid state data gives log ‫‬ ௦, The solid state data from different techniques are in good agreement, but with the data reported by Saleh et al 23 being higher than the others, and the data reported by Bruns et al 57 being lower.…”

Section: Malonic Acid (C 3 H 4 O 4 )supporting

confidence: 62%

“…21 Well-defined laboratory data on the mass accommodation coefficients of organic molecules is still scarce, largely due to similar difficulties as encountered in determining the saturation vapor pressures. 22 Saleh et al 23 reported α m values of 0.07, 0.08, and 0.24 for succinic-, adipic-, and pimelic acids, respectively, based on experiments using the Integrated Volume Methods described in Section 3.3.3. Recently, Julin et al 20 studied the pure-component mass accommodation of a selection of organic molecules (succinic acid, adipic acid, naphtalene and nonane) by molecular simulations complemented with expansion chamber measurements for nonane only, and found no clear evidence for α m values below unity for any of the molecules, but constrained the coefficients to be between about 0.1-1 for all the studied molecules.…”

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confidence: 99%

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Saturation Vapor Pressures and Transition Enthalpies of Low-Volatility Organic Molecules of Atmospheric Relevance: From Dicarboxylic Acids to Complex Mixtures

Bilde

Barsanti

Booth³

et al. 2015

Chem. Rev.

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212

307

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Introduction 4116 2. Theoretical Background and Framework for Atmospheric Aerosols 4117 2.1. Saturation Vapor Pressures 4117 2.2. Vapor−Liquid or Vapor−Solid Equilibria over Mixed Solutions 4118 2.3. Equilibria over Curved Surfaces 4118 2.4. Dynamic Evaporation and Condensation from and to an Aerosol Particle 4119 2.5. Ambient Partitioning 4120 3. Experimental Methods 4120 3.1. Knudsen-Cell-Based Methods 4121 3.1.1. Knudsen Mass Loss Methods 4121 3.

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Section: Malonic Acid (C 3 H 4 O 4 )supporting

confidence: 62%

mentioning

confidence: 99%

Saturation Vapor Pressures and Transition Enthalpies of Low-Volatility Organic Molecules of Atmospheric Relevance: From Dicarboxylic Acids to Complex Mixtures

Bilde

Barsanti

Booth³

et al. 2015

Chem. Rev.

Self Cite

212

307

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“…The effective mass accommodation coefficient is chosen to be 0.05, consistent with the TD results by Lee (2010) for biogenic SOA evaporation. There is no quantitative information about the accommodation coefficients of organic aerosol constituents available in the current literature (Kulmala and Wanger, 2001;Kolb et al, 2010) however low accommodation coefficients of organic aerosol have been reported (Grieshop et al, 2007(Grieshop et al, , 2009bSaleh et al, 2009;Lee, 2010). The corresponding average volatility distribution of the ambient organic aerosol is then estimated by letting the volatility distribution vary and minimizing the sum of the squared differences between the MFR model predictions and the thermodenuder measurements.…”

Section: Multi-component Organic Aerosol Evaporation Modelmentioning

confidence: 99%

Measurement of the ambient organic aerosol volatility distribution: application during the Finokalia Aerosol Measurement Experiment (FAME-2008)

et al. 2010

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Abstract.A variable residence time thermodenuder (TD) was combined with an Aerodyne Aerosol Mass Spectrometer (AMS) and a Scanning Mobility Particle Sizer (SMPS) to measure the volatility distribution of aged organic aerosol in the Eastern Mediterranean during the Finokalia Aerosol Measurement Experiment in May of 2008 (FAME-2008. A new method for the quantification of the organic aerosol volatility distribution was developed combining measurements of all three instruments together with an aerosol dynamics model.Challenges in the interpretation of ambient thermodenuder-AMS measurements include the potential resistances to mass transfer during particle evaporation, the effects of particle size on the evaporated mass fraction, the changes in the AMS collection efficiency and particle density as the particles evaporate partially in the TD, and finally potential losses inside the TD. Our proposed measurement and data analysis method accounts for all of these problems combining the AMS and SMPS measurements.The AMS collection efficiency of the aerosol that passed through the TD was found to be approximately 10% lower than the collection efficiency of the aerosol that passed through the bypass. The organic aerosol measured at Finokalia is approximately 2 or more orders of magnitude less volatile than fresh laboratory-generated monoterpene (α-pinene, β-pinene and limonene under low NO x conditions)Correspondence to: S. N. Pandis (spyros@chemeng.upatras.gr) secondary organic aerosol. This low volatility is consistent with its highly oxygenated AMS mass spectrum. The results are found to be highly sensitive to the mass accommodation coefficient of the evaporating species. This analysis is based on the assumption that there were no significant reactions taking place inside the thermodenuder.

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“…That theoretical maximum is directly proportional to the vapor pressure, which is an equilibrium property describing the energetic difference between the vapor and bulk liquid, and thus is independent of the surface.) However, recently it has been suggested that the evaporation coefficient, γ e , for complex organic aerosol, specifically lubricating oil and secondary organic aerosol from the α-pinene+O 3 reaction, is significantly less than one (0.001 < γ e < 0.01) (Grieshop et al, 2007;Grieshop et al, 2009) and may be less than one for individual organic acids (Saleh et al, 2009). If γ e is small, this would have the effect of decreasing the evaporation rate for a compound with a given C sat value.…”

Section: The Evaporation Coefficientmentioning

confidence: 99%

A model of aerosol evaporation kinetics in a thermodenuder

Cappa

2010

Atmos. Meas. Tech.

110

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Abstract. Aerosol thermodenuders provide a measure of particle volatility. The information provided by a thermodenuder is fundamentally related to the kinetics of evaporation and condensation within the device. Here, a timedependent, multi-component model of particle and gas-phase mass transfer in a thermodenuder is described. This model empirically accounts for the temperature profile along the length of a typical thermodenuder and distinguishes between the influence of the heating section and of the adsorbent denuder section. It is shown that "semi-volatile" aerosol is particularly sensitive to the inclusion of an adsorbent denuder in the model. As expected, the mass loss from evaporation of particles as they pass through the thermodenuder is directly related to the compound vapor pressure, although the assumptions regarding the enthalpy of vaporization are shown to also have a large influence on the overall calculated mass thermograms. The model has been validated by comparison with previously measured mass thermograms for single-component aerosols and is shown to provide reasonable semi-quantitative agreement. The model that has been developed here can be used to provide quantitative understanding of aerosol volatility measurements of single and multi-component aerosol made using thermodenuders that include adsorbent denuder sections.

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Determination of evaporation coefficients of semi-volatile organic aerosols using an integrated volume—tandem differential mobility analysis (IV-TDMA) method

Cited by 36 publications

References 43 publications

Saturation Vapor Pressures and Transition Enthalpies of Low-Volatility Organic Molecules of Atmospheric Relevance: From Dicarboxylic Acids to Complex Mixtures

Saturation Vapor Pressures and Transition Enthalpies of Low-Volatility Organic Molecules of Atmospheric Relevance: From Dicarboxylic Acids to Complex Mixtures

Measurement of the ambient organic aerosol volatility distribution: application during the Finokalia Aerosol Measurement Experiment (FAME-2008)

A model of aerosol evaporation kinetics in a thermodenuder

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