Articles | Volume 18, issue 19
https://doi.org/10.5194/amt-18-4969-2025
https://doi.org/10.5194/amt-18-4969-2025
Research article
 | 
01 Oct 2025
Research article |  | 01 Oct 2025

Continuous chemical characterization of ultrafine particulate matter (PM0.1)

Georgia A. Argyropoulou, Kalliopi Florou, and Spyros N. Pandis

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Cited articles

Abdillah, S. F. I. and Wang, Y.-F.: Ambient ultrafine particle (PM0.1): Sources, characteristics, measurements and exposure implications on human health, Environ. Res., 218, 115061, https://doi.org/10.1016/j.envres.2022.115061, 2023. 
Argyropoulou, G. A., Kaltsonoudis, C., Patoulias, D., and Pandis, S. N.: Novel method for the continuous mass concentration measurement of ultrafine particles (PM0.1) with a water-based condensation particle counter (CPC), Aerosol Sci. Tech., 58, 1182–1193, https://doi.org/10.1080/02786826.2024.2368196, 2024.  
Baldauf, R., Devlin, R., Gehr, P., Giannelli, R., Hassett-Sipple, B., Jung, H., Martini, G., McDonald, J., Sacks, J., and Walker, K.: Ultrafine Particle Metrics and Research Considerations: Review of the 2015 UFP Workshop, Int. J. Environ. Res. Pub. He., 13, 1054, https://doi.org/10.3390/ijerph13111054, 2016. 
Beauchemin, S., Levesque, C., Wiseman, C. L. S., and Rasmussen, P. E.: Quantification and Characterization of Metals in Ultrafine Road Dust Particles, Atmosphere, 12, 1564, https://doi.org/10.3390/atmos12121564, 2021. 
Canagaratna, M. R., Jimenez, J. L., Kroll, J. H., Chen, Q., Kessler, S. H., Massoli, P., Hildebrandt Ruiz, L., Fortner, E., Williams, L. R., Wilson, K. R., Surratt, J. D., Donahue, N. M., Jayne, J. T., and Worsnop, D. R.: Elemental ratio measurements of organic compounds using aerosol mass spectrometry: characterization, improved calibration, and implications, Atmos. Chem. Phys., 15, 253–272, https://doi.org/10.5194/acp-15-253-2015, 2015. 
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Short summary
Ultrafine particles (diameter of less than 100 nm) are suspected to cause significant health effects. Accurately measuring their chemical composition and physical properties in real time is challenging due to their low mass and interference from larger particles. This study proposes a method for the continuous, automated measurement of their composition, tested in a pilot field study to explore their chemical characteristics, physical properties, and sources.
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