Articles | Volume 13, issue 11
https://doi.org/10.5194/amt-13-5977-2020
https://doi.org/10.5194/amt-13-5977-2020
Research article
 | 
10 Nov 2020
Research article |  | 10 Nov 2020

Interference from alkenes in chemiluminescent NOx measurements

Mohammed S. Alam, Leigh R. Crilley, James D. Lee, Louisa J. Kramer, Christian Pfrang, Mónica Vázquez-Moreno, Milagros Ródenas, Amalia Muñoz, and William J. Bloss

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Cited articles

Alam, M. S., Camredon, M., Rickard, A. R., Carr, T., Wyche, K. P., Hornsby, K. E., Monks, P. S., and Bloss, W. J.: Total radical yields from tropospheric ethene ozonolysis, Phys. Chem. Chem. Phys., 13, 11002–11015, 2011. 
Alam, M. S., Rickard, A. R., Camredon, M., Wyche, K. P., Carr, T., Hornsby, K. E., Monks, P. S., and Bloss, W. J.: Radical product yields from the ozonolysis of short chain alkenes under atmospheric boundary layer conditions, J. Phys. Chem. A, 117, 12468–12483, 2013. 
Alam, M. S., Crilley, L. R., Lee, J. D., Kramer, L. J., Pfrang, C., Vazquez-Moreno, M., Rodenas, M., Munoz, A., and Bloss, W. J.: NOx interference data, University of Birmingham, https://doi.org/10.25500/eData.bham.00000566, 2020. 
AQEG: Air quality expert group. Nitrogen dioxide in the United Kingdom, London, UK, 2004. 
Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., Troe, J., and IUPAC Subcommittee: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume II – gas phase reactions of organic species, Atmos. Chem. Phys., 6, 3625–4055, https://doi.org/10.5194/acp-6-3625-2006, 2006. 
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Short summary
We report on the interference arising in measurements of nitrogen oxides (NOx) from the presence of a range of alkenes in sampled air when using the most widespread air quality monitoring technique for chemiluminescence detection. Interferences of up to 11 % are reported, depending upon the alkene present and conditions used. Such interferences may be of substantial importance for the interpretation of ambient NOx data, particularly for high volatile organic compound and low NOx environments.
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