Retention during freezing of raindrops – Part 2: Investigation of ambient organics from Beijing urban aerosol samples

Seymore, Jackson; Gautam, Martanda; Szakáll, Miklós; Theis, Alexander; Hoffmann, Thorsten; Ma, Jialiang; Zhou, Lingli; Vogel, Alexander L.

doi:https://doi.org/10.5194/acp-25-11829-2025

Articles | Volume 25, issue 19

https://doi.org/10.5194/acp-25-11829-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The tropopause region in a changing atmosphere (TPChange)...

https://doi.org/10.5194/acp-25-11829-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 19

Research article

|

01 Oct 2025

Research article |

| 01 Oct 2025

Retention during freezing of raindrops – Part 2: Investigation of ambient organics from Beijing urban aerosol samples

Jackson Seymore, Martanda Gautam, Miklós Szakáll, Alexander Theis, Thorsten Hoffmann, Jialiang Ma, Lingli Zhou, and Alexander L. Vogel

Supplement

https://doi.org/10.5194/acp-25-11829-2025-supplement

Data sets

Retention Coefficients Measured from Acoustic Levitator Untargeted Mass Spec Experiments Using Beijing Filter Samples [Data set] J. Seymore https://doi.org/10.5281/zenodo.15166745

Short summary

We investigated the chemical retention of water-soluble organic compounds in Beijing aerosols using an acoustic levitator and drop-freezing experiments. Samples from PM2.5 filter extracts were frozen at -15 °C in an acoustic levitator without artificial nucleators and analyzed using ultra-high resolution mass spectrometry. Our findings reveal a non-normal distribution of retention coefficients that differs from current literature on cloud droplets.