Articles | Volume 16, issue 20
https://doi.org/10.5194/acp-16-13035-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-13035-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
21 Oct 2016
Research article |
| 21 Oct 2016
The effect of viscosity and diffusion on the HO2 uptake by sucrose and secondary organic aerosol particles
Pascale S. J. Lakey
School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
Thomas Berkemeier
Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
Manuel Krapf
Paul Scherrer Institute, Villigen, Switzerland
Josef Dommen
Paul Scherrer Institute, Villigen, Switzerland
Sarah S. Steimer
Paul Scherrer Institute, Villigen, Switzerland
Lisa K. Whalley
School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
National Centre for Atmospheric Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
Trevor Ingham
School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
National Centre for Atmospheric Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
Maria T. Baeza-Romero
Escuela de Ingeniería Industrial de Toledo, Universidad de Castilla la Mancha, Avenida Carlos III s/n Real Fábrica de Armas, 45071 Toledo, Spain
Ulrich Pöschl
Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
Manabu Shiraiwa
Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
Department of Chemistry, University of California, Irvine, CA 92617, USA
Markus Ammann
Paul Scherrer Institute, Villigen, Switzerland
School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
National Centre for Atmospheric Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
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Latest update: 15 Nov 2025
Short summary
Chemical oxidation in the atmosphere removes pollutants and greenhouse gases but generates undesirable products such as secondary organic aerosol. Radicals are key intermediates in oxidation, but how they interact with aerosols is still not well understood. Here we use a laser to measure the loss of radicals onto oxidised aerosols generated in a smog chamber. The loss of radicals was controlled by the thickness or viscosity of the aerosols, confirmed by using sugar aerosols of known thickness.
Chemical oxidation in the atmosphere removes pollutants and greenhouse gases but generates...
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