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Volume 16, issue 20
Atmos. Chem. Phys., 16, 13035–13047, 2016
https://doi.org/10.5194/acp-16-13035-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 16, 13035–13047, 2016
https://doi.org/10.5194/acp-16-13035-2016
© Author(s) 2016. This work is distributed under
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 et al.

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Cited articles

Ammann, M.: Using 13N as tracer in heterogeneous atmospheric chemistry experiments, Radiochim. Acta, 89, 831–838, 2001.
Arens, F., Gutzwiller, L., Baltensperger, U., Gäggeler, H. W., and Ammann, M.: Heterogeneous reaction of NO2 on diesel soot particles, Environ. Sci. Technol., 35, 2191–2199, 2001.
Badger, C. L., Griffiths, P. T., George, I., Abbatt, J. P. D., and Cox, R. A.: Reactive uptake of N2O5 by aerosol particles containing mixtures of humic acid and ammonium sulfate, J. Phys. Chem. A, 110, 6986–6994, https://doi.org/10.1021/jp0562678, 2006.
Bedjanian, Y., Romanias, M. N., and El Zein, A.: Uptake of HO2 radicals on Arizona Test Dust, Atmos. Chem. Phys., 13, 6461–6471, https://doi.org/10.5194/acp-13-6461-2013, 2013.
Behr, P., Scharfenort, U., Ataya, K., and Zellner, R.: Dynamics and mass accommodation of HCl molecules on sulfuric acid–water surfaces, Phys. Chem. Chem. Phys., 11, 8048–8055, 2009.
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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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