Articles | Volume 19, issue 1
Atmos. Chem. Phys., 19, 349–362, 2019
https://doi.org/10.5194/acp-19-349-2019
Atmos. Chem. Phys., 19, 349–362, 2019
https://doi.org/10.5194/acp-19-349-2019

Research article 10 Jan 2019

Research article | 10 Jan 2019

ROOOH: a missing piece of the puzzle for OH measurements in low-NO environments?

Christa Fittschen et al.

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Cited articles

Archibald, A. T., Petit, A. S., Percival, C. J., Harvey, J. N., and Shallcross, D. E.: On the Importance of the Reaction between OH and RO2 Radicals, Atmos. Sci. Lett., 10, 102–108, 2009. 
Archibald, A. T., Cooke, M. C., Utembe, S. R., Shallcross, D. E., Derwent, R. G., and Jenkin, M. E.: Impacts of mechanistic changes on HOx formation and recycling in the oxidation of isoprene, Atmos. Chem. Phys., 10, 8097–8118, https://doi.org/10.5194/acp-10-8097-2010, 2010. 
Assaf, E., Song, B., Tomas, A., Schoemaecker, C., and Fittschen, C.: Rate Constant of the Reaction between CH3O2 Radicals and OH Radicals revisited, J. Phys. Chem. A, 120, 8923–8932, https://doi.org/10.1021/acs.jpca.6b07704, 2016. 
Assaf, E., Sheps, L., Whalley, L., Heard, D., Tomas, A., Schoemaecker, C., and Fittschen, C.: The Reaction between CH3O2 and OH Radicals: Product Yields and Atmospheric Implications, Environ. Sci. Technol., 51, 2170–2177, https://doi.org/10.1021/acs.est.6b06265, 2017a. 
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Short summary
Concentrations of OH, the main oxidant in the atmosphere, were measured in biogenic environments up to a factor of 10 higher than predicted by models. This was interpreted as a major lack in our understanding of biogenic volatile organic compound chemistry. But interferences of unknown origin have also been discovered, and we present experimental and modelling evidence that the interference might be due to the unexpected decomposition of a new class of molecule, ROOOH, in the FAGE instruments.
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