Articles | Volume 18, issue 5
https://doi.org/10.5194/acp-18-3249-2018
https://doi.org/10.5194/acp-18-3249-2018
Research article
 | 
07 Mar 2018
Research article |  | 07 Mar 2018

Nighttime oxidation of surfactants at the air–water interface: effects of chain length, head group and saturation

Federica Sebastiani, Richard A. Campbell, Kunal Rastogi, and Christian Pfrang

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Cited articles

Adams, E. and Allen, H.: Palmitic acid on salt subphases and in mixed monolayers of cerebrosides: application to atmospheric aerosol chemistry, Atmosphere-Basel, 4, 315–336, 2013.
Allan, J. D., Williams, P. I., Morgan, W. T., Martin, C. L., Flynn, M. J., Lee, J., Nemitz, E., Phillips, G. J., Gallagher, M. W., and Coe, H.: Contributions from transport, solid fuel burning and cooking to primary organic aerosols in two UK cities, Atmos. Chem. Phys., 10, 647–668, https://doi.org/10.5194/acp-10-647-2010, 2010.
Allodi, G.: FMINUIT – A Binding to Minuit for Matlab, Octave & Scilab.
Angus-Smyth, A., Campbell, R. A., and Bain, C. D.: Dynamic adsorption of weakly interacting polymer/surfactant mixtures at the air/water interface, Langmuir, 28, 12479–12492, 2012.
Braun, L., Uhlig, M., von Klitzing, R., and Campbell, R. A.: Polymers and surfactant at fluid interfaces studied with specular neutron reflectometry, Adv. Colloid Interfac., 247, 130–148, 2017.
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Short summary
We report the first kinetic study of a key atmospheric nighttime oxidant (NO3) with one-molecule thin organic layers at the air–water interface. Organic molecules were chosen to establish the impact of head group, aliphatic chain length and saturation. We show that NO3 may dominate degradation at night, retention of the organic character varies strongly and atmospheric lifetimes are longer than those determined at the interface – a key motivation for further experimental and modelling studies.
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