Articles | Volume 22, issue 6
Research article
28 Mar 2022
Research article |  | 28 Mar 2022

Hygroscopicity of organic compounds as a function of organic functionality, water solubility, molecular weight, and oxidation level

Shuang Han, Juan Hong, Qingwei Luo, Hanbing Xu, Haobo Tan, Qiaoqiao Wang, Jiangchuan Tao, Yaqing Zhou, Long Peng, Yao He, Jingnan Shi, Nan Ma, Yafang Cheng, and Hang Su

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Atmos. Chem. Phys., 22, 4599–4613,,, 2022
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Subject: Aerosols | Research Activity: Laboratory Studies | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Apelblat, A., Dov, M., Wisniak, J., and Zabicky, J.: The vapour pressure of water over saturated aqueous solutions of malic, tartaric, and citric acids, at temperatures from 288 K to 323 K, J. Chem. Thermodyn., 27, 35–41,, 1995. 
Bilde, M., Svenningsson, B., Mønster, J., and Rosenørn, T.: Even–odd alternation of evaporation rates and vapor pressures of C3–C9 dicarboxylic acid aerosols, Environ. Sci. Technol., 37, 1371–1378,, 2003. 
Bilde, M., Zardini, A. A., Hong, J., Tschiskale, M., and Emanuelsson, E.: Atmospheric sugar alcohols: evaporation rates and saturation vapor pressures, AGU Fall Meeting Abstracts, A21K-3178, (last access: 16 March 2022), 2014. 
Braban, C. F., Carroll, M. F., Styler, S. A., and Abbatt, J. P.: Phase transitions of malonic and oxalic acid aerosols, J. Phys. Chem. A, 107, 6594–6602,, 2003. 
Cao, L.-M., Huang, X.-F., Wang, C., Zhu, Q., and He, L.-Y.: Characterization of submicron aerosol volatility in the regional atmosphere in southern China, Chemosphere, 236, 124383,, 2019. 
Short summary
We present the hygroscopicity of 23 organic species with different physicochemical properties using a hygroscopicity tandem differential mobility analyzer (HTDMA) and compare the results with previous studies. Based on the hygroscopicity parameter κ, the influence of different physicochemical properties that potentially drive hygroscopicity, such as the functionality, water solubility, molar volume, and O : C ratio of organics, are examined separately.
Final-revised paper