Articles | Volume 14, issue 8
Atmos. Meas. Tech., 14, 5501–5519, 2021
https://doi.org/10.5194/amt-14-5501-2021
Atmos. Meas. Tech., 14, 5501–5519, 2021
https://doi.org/10.5194/amt-14-5501-2021
Research article
12 Aug 2021
Research article | 12 Aug 2021

Impact of ozone and inlet design on the quantification of isoprene-derived organic nitrates by thermal dissociation cavity ring-down spectroscopy (TD-CRDS)

Patrick Dewald et al.

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Cited articles

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Short summary
Organic nitrates generated from the reaction between isoprene and the nitrate radical (ISOP-NITs) were detected via their thermal dissociation in heated quartz inlets to nitrogen dioxide monitored by cavity ring-down spectroscopy. The temperature-dependent dissociation profiles of ISOP-NITs in the presence of ozone (O3) are broad in contrast to narrow profiles of common reference compounds. We demonstrate that this broadening is caused by O3-assisted reactions of ISOP-NITs on quartz surfaces.