Articles | Volume 21, issue 22
https://doi.org/10.5194/acp-21-16793-2021
https://doi.org/10.5194/acp-21-16793-2021
Peer-reviewed comment
 | 
18 Nov 2021
Peer-reviewed comment |  | 18 Nov 2021

Comment on “Isotopic evidence for dominant secondary production of HONO in near-ground wildfire plumes” by Chai et al. (2021)

James M. Roberts

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Cited articles

Chai, J.: Author comment 1, https://doi.org/10.5194/acp-2021-225-AC1, 2021. 
Chai, J., Dibb, J. E., Anderson, B. E., Bekker, C., Blum, D. E., Heim, E., Jordan, C. E., Joyce, E. E., Kaspari, J. H., Munro, H., Walters, W. W., and Hastings, M. G.: Isotopic evidence for dominant secondary production of HONO in near-ground wildfire plumes, Atmos. Chem. Phys., 21, 13077–13098, https://doi.org/10.5194/acp-21-13077-2021, 2021. 
Grosjean, D., Fung, K., Collins, J., Harrison, J., and Breitung, E.: Portable generator for on-site calibration of peroxyacetyl nitrate analyzers, Anal. Chem., 56, 569–573, 1984. 
Grosjean, D. and Harrison, J., Peroxyacetyl nitrate: Comparison of alkaline hydrolysis and chemiluminescence methods, Environ. Sci. Technol., 19, 749–752, 1985. 
Short summary
This comment provides evidence that recently reported measurements of the isotope composition of wildfire-derived oxides of nitrogen have a significant interference from other nitrogen compounds. In addition, the conceptual model used to interpret the results was missing several key reactions.
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