Measurement report: Molecular composition, sources, and evolution of atmospheric organic aerosols in a basin city in China

Zhang, Junke; Fu, Xinyi; Chen, Chunying; Su, Yunfei; Liu, Siyu; Chen, Luyao; Chen, Yubao; Wang, Gehui; Prevot, Andre S. H.

doi:https://doi.org/10.5194/acp-25-8983-2025

Articles | Volume 25, issue 16

https://doi.org/10.5194/acp-25-8983-2025

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

https://doi.org/10.5194/acp-25-8983-2025

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

Articles | Volume 25, issue 16

Measurement report

|

18 Aug 2025

Measurement report |

| 18 Aug 2025

Measurement report: Molecular composition, sources, and evolution of atmospheric organic aerosols in a basin city in China

Junke Zhang, Xinyi Fu, Chunying Chen, Yunfei Su, Siyu Liu, Luyao Chen, Yubao Chen, Gehui Wang, and Andre S. H. Prevot

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https://doi.org/10.5194/acp-25-8983-2025-supplement

Data sets

data for "Measurement Report: Molecular composition, sources, and evolution of atmospheric organic aerosols in a basin city in China" Junke Zhang et al. https://doi.org/10.5281/zenodo.14875327

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We measured (at the molecular level) the 125 organic aerosol (OA) compounds present in Chengdu in winter. OA was dominated by fatty acids, phthalate esters, and anhydrosugars, and it was deeply influenced by anthropogenic sources. As pollution worsened, secondary inorganic species and secondary organic carbon (OC) dominated the increase in PM_2.5, fatty acids and anhydrosugars dominated the increase in OA, and the contributions of secondary formation and biomass burning to OC increased markedly.