Articles | Volume 22, issue 20
Measurement report
28 Oct 2022
Measurement report |  | 28 Oct 2022

Measurement report: Investigation of pH- and particle-size-dependent chemical and optical properties of water-soluble organic carbon: implications for its sources and aging processes

Yuanyuan Qin, Juanjuan Qin, Xiaobo Wang, Kang Xiao, Ting Qi, Yuwei Gao, Xueming Zhou, Shaoxuan Shi, Jingnan Li, Jingsi Gao, Ziyin Zhang, Jihua Tan, Yang Zhang, and Rongzhi Chen

Related authors

Measurement Report: Effects of transition metal ions on the optical properties of humic-like substances revealing structural preference
Juanjuan Qin, Leiming Zhang, Yuanyuan Qin, Shaoxuan Shi, Jingnan Li, Zhao Shu, Yuwei Gao, Ting Qi, Jihua Tan, and Xinming Wang
EGUsphere,,, 2024
Short summary
Measurement report: Impact of emission control measures on environmental persistent free radicals and reactive oxygen species – A short-term case study in Beijing
Yuanyuan Qin, Xinghua Zhang, Wei Huang, Juanjuan Qin, Xiaoyu Hu, Yuxuan Cao, Tianyi Zhao, Yang Zhang, Jihua Tan, Ziyin Zhang, Xinming Wang, and Zhenzhen Wang
EGUsphere,,, 2024
Short summary

Related subject area

Subject: Aerosols | Research Activity: Laboratory Studies | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
Formation and loss of light absorbance by phenolic aqueous SOA by OH and an organic triplet excited state
Stephanie Arciva, Lan Ma, Camille Mavis, Chrystal Guzman, and Cort Anastasio
Atmos. Chem. Phys., 24, 4473–4485,,, 2024
Short summary
Technical Note: A technique to convert NO2 to NO2 with S(IV) and its application to measuring nitrate photolysis
Aaron Lieberman, Julietta Picco, Murat Onder, and Cort Anastasio
Atmos. Chem. Phys., 24, 4411–4419,,, 2024
Short summary
Distribution, chemical, and molecular composition of high and low molecular weight humic-like substances in ambient aerosols
Xingjun Fan, Ao Cheng, Xufang Yu, Tao Cao, Dan Chen, Wenchao Ji, Yongbing Cai, Fande Meng, Jianzhong Song, and Ping'an Peng
Atmos. Chem. Phys., 24, 3769–3783,,, 2024
Short summary
Desorption lifetimes and activation energies influencing gas–surface interactions and multiphase chemical kinetics
Daniel A. Knopf, Markus Ammann, Thomas Berkemeier, Ulrich Pöschl, and Manabu Shiraiwa
Atmos. Chem. Phys., 24, 3445–3528,,, 2024
Short summary
Molecular analysis of secondary organic aerosol and brown carbon from the oxidation of indole
Feng Jiang, Kyla Siemens, Claudia Linke, Yanxia Li, Yiwei Gong, Thomas Leisner, Alexander Laskin, and Harald Saathoff
Atmos. Chem. Phys., 24, 2639–2649,,, 2024
Short summary

Cited articles

Aiona, P. K., Luek, J. L., Timko, S. A., Powers, L. C., Gonsior, M., and Nizkorodov, S. A.: Effect of photolysis on absorption and fluorescence spectra of light-absorbing secondary organic aerosols, ACS Earth. Space. Chem., 2, 235–245,, 2018. 
Ault, A. P.: Aerosol acidity: Novel measurements and implications for atmospheric chemistry, Acc. Chem. Res., 53, 1703–1714,, 2020. 
Baduel, C., Monge, M. E., Voisin, D., Jaffrezo, J. L., George, C., Haddad, I. E., Marchand, N., and D'Anna, B.: Oxidation of atmospheric humic like substances by ozone: A kinetic and structural analysis approach, Environ. Sci. Technol., 45, 5238–5244,, 2011. 
Battaglia, M. A., Douglas, S., and Hennigan, C. J.: Effect of the urban heat island on aerosol pH, Environ. Sci. Technol., 51, 13095–13103,, 2017. 
Boreddy, S. K. R., Hegde, P., and Aswini, A. R.: Chemical characteristics, size distributions, and aerosol liquid water in size-resolved coastal urban aerosols allied with distinct air masses over tropical peninsular India, ACS Earth. Space. Chem., 5, 457–473,, 2021. 
Short summary
Deep interrogation of water-soluble organic carbon (WSOC) in aerosols is critical and challenging considering its involvement in many key aerosol-associated chemical reactions. This work examined how the chemical structures (functional groups) and optical properties (UV/fluorescence properties) of WSOC were affected by pH and particle size. We found that the pH- and particle-size-dependent behaviors could be used to reveal the structures, sources, and aging of aerosol WSOC.
Final-revised paper