Articles | Volume 21, issue 17
https://doi.org/10.5194/acp-21-13011-2021
https://doi.org/10.5194/acp-21-13011-2021
Opinion
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02 Sep 2021
Opinion | Highlight paper |  | 02 Sep 2021

Opinion: The germicidal effect of ambient air (open-air factor) revisited

R. Anthony Cox, Markus Ammann, John N. Crowley, Paul T. Griffiths, Hartmut Herrmann, Erik H. Hoffmann, Michael E. Jenkin, V. Faye McNeill, Abdelwahid Mellouki, Christopher J. Penkett, Andreas Tilgner, and Timothy J. Wallington

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Latest update: 27 May 2024
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Short summary
The term open-air factor was coined in the 1960s, establishing that rural air had powerful germicidal properties possibly resulting from immediate products of the reaction of ozone with alkenes, unsaturated compounds ubiquitously present in natural and polluted environments. We have re-evaluated those early experiments, applying the recently substantially improved knowledge, and put them into the context of the lifetime of aerosol-borne pathogens that are so important in the Covid-19 pandemic.
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