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© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

To date, there are limited data on the thermal properties of secondary organic aerosol (SOA) components. In this study, we employed an experimental method to evaluate the physical properties of some atmospherically relevant compounds. We estimated the thermodynamic properties of SOA components, in particularly some carboxylic acids. The molar heat capacity, melting point and enthalpy, and vaporization enthalpy of the samples were determined via differential scanning calorimetry and thermogravimetric analysis, and their vaporization enthalpy (ΔHvap) was estimated using Clausius–Clapeyron and Langmuir equations based on their thermogravimetric profiles. The thermodynamic properties of benzoic acid as a reference compound agree well with the reported values. The obtained specific heat capacities of benzoic acid, phthalic acid, pinic acid, ketopinic acid, cis-pinonic acid, terpenylic acid and diaterpenylic acid acetate (DTAA) are 118.1, 169.4, 189.9, 223.9, 246.1, 223.2, and 524.1 J mol−1 K−1, respectively. The ΔHvap of benzoic acid, phthalic acid, ketopinic acid, DTAA, and 3-methylbutane-1,2,3-tricarboxylic acid (3-MBTCA) are 93.2 ± 0.4, 131.6, 113.8, and 124.4 kJ mol−1, respectively. The melting and vaporization enthalpies of the SOA components range from 7.3 to 29.7 kJ mol−1.

Details

Title
Determination of Volatility Parameters of Secondary Organic Aerosol Components via Thermal Analysis
Author
Fawad Ashraf 1   VIAFID ORCID Logo  ; Zaeem Bin Babar 2 ; Jun-Hyun, Park 3 ; Pham Duy Quang Dao 4   VIAFID ORCID Logo  ; Cho, Chan Sik 4 ; Ho-Jin, Lim 3 

 Department of Environmental Engineering, Kyungpook National University, Daegu 41566, Korea; [email protected] (F.A.); [email protected] (Z.B.B.); [email protected] (J.-H.P.); Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore 54000, Pakistan 
 Department of Environmental Engineering, Kyungpook National University, Daegu 41566, Korea; [email protected] (F.A.); [email protected] (Z.B.B.); [email protected] (J.-H.P.); Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan 
 Department of Environmental Engineering, Kyungpook National University, Daegu 41566, Korea; [email protected] (F.A.); [email protected] (Z.B.B.); [email protected] (J.-H.P.) 
 Department of Applied Chemistry, Kyungpook National University, Daegu 41566, Korea; [email protected] (P.D.Q.D.); [email protected] (C.S.C.) 
First page
709
Publication year
2022
Publication date
2022
Publisher
MDPI AG
e-ISSN
20734433
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2670066735
Copyright
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.