Uncertainties in the effects of organic aerosol coatings on polycyclic aromatic hydrocarbon concentrations and their estimated health effects

Lou, Sijia; Shrivastava, Manish; Albinet, Alexandre; Tomaz, Sophie; Srivastava, Deepchandra; Favez, Olivier; Shen, Huizhong; Ding, Aijun

doi:https://doi.org/10.5194/acp-25-8163-2025

Articles | Volume 25, issue 14

https://doi.org/10.5194/acp-25-8163-2025

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

https://doi.org/10.5194/acp-25-8163-2025

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

Articles | Volume 25, issue 14

Research article

|

30 Jul 2025

Research article |

| 30 Jul 2025

Uncertainties in the effects of organic aerosol coatings on polycyclic aromatic hydrocarbon concentrations and their estimated health effects

Sijia Lou, Manish Shrivastava, Alexandre Albinet, Sophie Tomaz, Deepchandra Srivastava, Olivier Favez, Huizhong Shen, and Aijun Ding

Supplement

https://doi.org/10.5194/acp-25-8163-2025-supplement

Data sets

ERA-Interim Project European Centre for Medium-Range Weather Forecasts https://doi.org/10.5065/D6CR5RD9

Integrated Atmospheric Deposition Network EPA https://www.epa.gov/great-lakes-monitoring/integrated-atmospheric-deposition-network

Global lung cancer risk from PAH exposure highly depends on emission sources and individual susceptibility (https://gems.sustech.edu.cn/data/database) H. Shen et al. https://doi.org/10.1038/srep06561

Introduction to the European Monitoring and Evaluation Programme (EMEP) and observed atmospheric composition change during 1972-2009 (https://ebas-data.nilu.no/Default.aspx) K. Tørseth et al. https://doi.org/10.5194/acp-12-5447-2012

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Short summary

Polycyclic aromatic hydrocarbons (PAHs), emitted from incomplete combustion, pose serious health risks due to their carcinogenic properties. This research demonstrates that viscous organic aerosol coatings significantly hinder PAH oxidation, with spatial distributions sensitive to the degradation modeling approach. Our findings emphasize the need for accurate modeling of PAH oxidation processes in risk assessments, considering both fresh and oxidized PAHs in evaluating human health risks.