Assessment of indoor HONO formation mechanisms based on in situ measurements and modeling |
| |
| Authors: | M Mendez N Blond D Amedro D A Hauglustaine P Blondeau C Afif C Fittschen C Schoemaecker |
| |
| Affiliation: | 1. Laboratoire Image Ville Environnement ‐ LIVE UMR 7362 CNRS, Université de Strasbourg, Strasbourg, France;2. Laboratoire des Sciences de l'Ingénieur pour l'Environnement ‐ LaSIE, UMR 7356 CNRS, Université de La Rochelle, La Rochelle, France;3. CNRS, UMR 8522, PC2A ‐ Physicochimie des Processus de Combustion et de l'Atmosphère, Université Lille, Lille, France;4. UMR 8212, Laboratoire des Sciences du Climat et de l'Environnement – LSCE, Gif sur, Yvette, France;5. Unité Environnement, Génomique Fonctionnelle et études Mathématiques, Emissions, Measurements, and Modeling of the Atmosphere (EMMA) Laboratory, Centre d'Analyses et de Recherche, Faculty of Sciences, Saint Joseph University, Beirut, Lebanon;6. Laboratoire Interuniversitaire des Systèmes Atmosphériques – LISA UMR 7583 CNRS, Université Paris‐Est Créteil (UPEC), Université Paris Diderot (UPD), Créteil, France |
| |
| Abstract: | The photolysis of HONO has been found to be the oxidation driver through OH formation in the indoor air measurement campaign SURFin, an extensive campaign carried out in July 2012 in a classroom in Marseille. In this study, the INCA‐Indoor model is used to evaluate different HONO formation mechanisms that have been used previously in indoor air quality models. In order to avoid biases in the results due to the uncertainty in rate constants, those parameters were adjusted to fit one representative day of the SURFin campaign. Then, the mechanisms have been tested with the optimized parameters against other experiments carried out during the SURFin campaign. Based on the observations and these findings, we propose a new mechanism incorporating sorption of NO2 onto surfaces with possible saturation of these surfaces. This mechanism is able to better reproduce the experimental profiles over a large range of conditions. |
| |
| Keywords: | Indoor chemistry surface reaction nitrous acid nitrogen dioxide |
|
|
