Articles | Volume 14, issue 9
https://doi.org/10.5194/amt-14-6039-2021
https://doi.org/10.5194/amt-14-6039-2021
Research article
 | 
16 Sep 2021
Research article |  | 16 Sep 2021

Development of a laser-photofragmentation laser-induced fluorescence instrument for the detection of nitrous acid and hydroxyl radicals in the atmosphere

Brandon Bottorff, Emily Reidy, Levi Mielke, Sebastien Dusanter, and Philip S. Stevens

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Cited articles

Acker, K., Möller, D., Wieprecht, W., Meixner, F. X., Bohn, B., Gilge, S., Plass-Dülmer, C., and Berresheim, H.: Strong daytime production of OH from HNO2 at a rural mountain site, Geophys. Res. Lett., 33, L02809, https://doi.org/10.1029/2005GL024643, 2006. 
Afif, C., Jambert, C., Michoud, V., Colomb, A., Eyglunent, G., Borbon, A., Daële, V., Doussin, J.-F., and Perros, P.: NitroMAC: An instrument for the measurement of HONO and intercomparison with a long-path absorption photometer, J. Environ. Sci., 40, 105–113, https://doi.org/10.1016/j.jes.2015.10.024, 2016. 
Bartolomei, V., Gomez Alvarez, E., Wittmer, J., Tlili, S., Strekowski, R., Temime-Roussel, B., Quivet, E., Wortham, H., Zetzsch, C., Kleffmann, J., and Gligorovski, S.: Combustion Processes as a Source of High Levels of Indoor Hydroxyl Radicals through the Photolysis of Nitrous Acid, Environ. Sci. Technol., 49, 6599–6607, https://doi.org/10.1021/acs.est.5b01905, 2015. 
Beckett, W. S., Russi, M. B., Haber, A. D., Rivkin, R. M., Sullivan, J. R., Tameroglu, Z., Mohsenin, V., and Leaderer, B. P.: Effect of nitrous acid on lung function in asthmatics: a chamber study, Environ. Health. Persp., 103, 372–375, https://doi.org/10.1289/ehp.95103372, 1995. 
Bejan, I., Abd El Aal, Y., Barnes, I., Benter, T., Bohn, B., Wiesen, P., and Kleffmann, J.: The photolysis of ortho-nitrophenols: a new gas phase source of HONO, Phys. Chem. Chem. Phys., 8, 2028–2035, https://doi.org/10.1039/B516590C, 2006. 
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Short summary
Nitrous acid (HONO) is an important source of hydroxyl (OH) radicals, the primary oxidant in the atmosphere. Accurate measurements of HONO are thus important to understand the oxidative capacity of the atmosphere. A new instrument capable of measuring atmospheric nitrous acid (HONO) with high sensitivity is presented, utilizing laser photofragmentation of ambient HONO and subsequent detection of the OH radical fragment.
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