Determination of Volatility Parameters of Organics and α-pinene SOA Products Using a Simultaneous Application of TGA and DSC Systems

Thermal Gravimetric Analysis-Differential Scanning Calorimetry (TGA-DSC) system with the application of Clausius-Clapeyron and Langmuir equations have been previously employed for the measurement of enthalpy of vaporization (ΔH_v) and saturation vapor pressure (P⁰) of various organic compounds. In this study, our initial efforts include the estimation of volatility parameters such as ΔH_v and P⁰ for various aromatic compounds such as phthalic acid, benzoic acid, and catechol and dicarboxylic acids such as adipic acid, suberic acid, and malanoic acid. Additionally, same analysis protocol will be applied to measure ΔH_v and P⁰ of commercially available α-pinene SOA products such as cis-pinonic acid, keto-pinic acid, and nopinone, respectively. The estimated values of ΔH_v and P⁰ will be compared with the literature data.