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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Latest update: 25 Sep 2023
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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.