Articles | Volume 20, issue 16
Atmos. Chem. Phys., 20, 9805–9819, 2020
https://doi.org/10.5194/acp-20-9805-2020
Atmos. Chem. Phys., 20, 9805–9819, 2020
https://doi.org/10.5194/acp-20-9805-2020

Research article 21 Aug 2020

Research article | 21 Aug 2020

Quantifying the nitrogen isotope effects during photochemical equilibrium between NO and NO2: implications for δ15N in tropospheric reactive nitrogen

Jianghanyang Li et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Jianghanyang Li on behalf of the Authors (02 Apr 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (03 Apr 2020) by Jan Kaiser
RR by Anonymous Referee #2 (18 May 2020)
ED: Publish subject to minor revisions (review by editor) (18 May 2020) by Jan Kaiser
AR by Jianghanyang Li on behalf of the Authors (20 May 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (07 Jun 2020) by Jan Kaiser
AR by Jianghanyang Li on behalf of the Authors (08 Jun 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (17 Jun 2020) by Jan Kaiser
AR by Jianghanyang Li on behalf of the Authors (23 Jun 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (29 Jun 2020) by Jan Kaiser
AR by Jianghanyang Li on behalf of the Authors (29 Jun 2020)  Author's response    Manuscript
ED: Publish as is (21 Jul 2020) by Jan Kaiser
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Short summary
Nitrogen isotopic compositions of atmospheric reactive nitrogen are widely used to infer their sources. However, the reactions between NO and NO2 strongly impact their isotopes, which was not well understood. We conducted a series of experiments in an atmospheric simulation chamber to determine the isotopic effects of (1) direct isotopic exchange between NO and NO2 and (2) the isotopic fractionations during NOx photochemistry, then developed an equation to quantify the overall isotopic effect.
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