Articles | Volume 17, issue 12
Atmos. Chem. Phys., 17, 7721–7731, 2017
https://doi.org/10.5194/acp-17-7721-2017

Special issue: BACCHUS – Impact of Biogenic versus Anthropogenic emissions...

Atmos. Chem. Phys., 17, 7721–7731, 2017
https://doi.org/10.5194/acp-17-7721-2017

Research article 28 Jun 2017

Research article | 28 Jun 2017

Enhanced toxicity of aerosol in fog conditions in the Po Valley, Italy

Stefano Decesari et al.

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Cited articles

Antinolo, M., Willis, M. D., Zhou, S. M., and Abbatt, J. P. D.: Connecting the oxidation of soot to its redox cycling abilities, Nature Communications, 6, 6812, https://doi.org/10.1038/ncomms7812, 2015.
Argyropoulos, G., Besis, A., Voutsa, D., Samara, C., Sowlat, M. H., Hasheminassab, S., and Sioutas, C.: Source apportionment of the redox activity of urban quasi-ultrafine particles (PM0.49) in Thessaloniki following the increased biomass burning due to the economic crisis in Greece, Science Total Environ., 568, 124–136, https://doi.org/10.1016/j.scitotenv.2016.05.217, 2016.
Baldocchi, D. and Waller, E.: Winter fog is decreasing in the fruit growing region of the Central Valley of California, Geophys. Res. Lett., 41, 3251–3256, https://doi.org/10.1002/2014gl060018, 2014.
Bates, J. T., Weber, R. J., Abrams, J., Verma, V., Fang, T., Klein, M., Strickland, M. J., Sarnat, S. E., Chang, H. H., Mulholland, J. A., Tolbert, P. E., and Russell, A. G.: Reactive Oxygen Species Generation Linked to Sources of Atmospheric Particulate Matter and Cardiorespiratory Effects, Environ. Sci. Technol., 49, 13605–13612, https://doi.org/10.1021/acs.est.5b02967, 2015.
Cassee, F. R., Heroux, M. E., Gerlofs-Nijland, M. E., and Kelly, F. J.: Particulate matter beyond mass: recent health evidence on the role of fractions, chemical constituents and sources of emission, Inhal. Toxicol., 25, 802–812, https://doi.org/10.3109/08958378.2013.850127, 2013.
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Short summary
Exposure to atmospheric particulate matter (PM) represents one of the biggest environmental health risks. We show that the intrinsic PM toxicity at a rural site, far from traffic emissions, is comparable to that of urban areas heavily impacted by traffic. Potentially toxic, redox-active compounds in PM are efficiently scavenged in the presence of fog but are also produced in fog. These findings provide evidence that atmospheric processing can significantly alter the toxicity of airborne PM.
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