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

Li, Jianghanyang; Zhang, Xuan; Orlando, John; Tyndall, Geoffrey; Michalski, Greg

doi:https://doi.org/10.5194/acp-20-9805-2020

Articles | Volume 20, issue 16

https://doi.org/10.5194/acp-20-9805-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-9805-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 16

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, Xuan Zhang, John Orlando, Geoffrey Tyndall, and Greg Michalski

Data sets

Quantifying the nitrogen equilibrium and photochemistry-induced kinetic isotopic effects between NO and NO2 Jianghanyang Li https://doi.org/10.17605/OSF.IO/JW8HU

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 NO_x photochemistry, then developed an equation to quantify the overall isotopic effect.