Articles | Volume 16, issue 20
Atmos. Chem. Phys., 16, 13035–13047, 2016
https://doi.org/10.5194/acp-16-13035-2016
Atmos. Chem. Phys., 16, 13035–13047, 2016
https://doi.org/10.5194/acp-16-13035-2016
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 et al.

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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.
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