Title :

Assessment of the impact of oxidation processes on indoor air pollution using the new time-resolved INCA-Indoor model

Author(s) :

Mendez, Maxence [Auteur]
Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356 [LaSIE]

Blond, Nadège [Auteur]

Blondeau, Patrice [Auteur]
Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356 [LaSIE]
Schoemaecker, Coralie [Auteur]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Hauglustaine, Didier A. [Auteur]

Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]

Journal title :

Atmospheric Environment

Abbreviated title :

Atmos. Environ.

Volume number :

122

Pages :

521-530

Publication date :

2015

HAL domain(s) :

Chimie/Chimie théorique et/ou physique
Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]

English abstract : [en]

INCA-Indoor, a new indoor air quality (IAQ) model, has been developed to simulate the concentrations of volatile organic compounds (VOC) and oxidants considering indoor air specific processes such as: emission, ventilation, ...
Show more >INCA-Indoor, a new indoor air quality (IAQ) model, has been developed to simulate the concentrations of volatile organic compounds (VOC) and oxidants considering indoor air specific processes such as: emission, ventilation, surface interactions (sorption, deposition, uptake). Based on the detailed version of SAPRC-07 chemical mechanism, INCA-Indoor is able to analyze the contribution of the production and loss pathways of key chemical species (VOCs, oxidants, radical species). The potential of this model has been tested through three complementary analyses: a comparison with the most detailed IAQ model found in the literature, focusing on oxidant species; realistic scenarios covering a large range of conditions, involving variable OH sources like HONO; and the investigation of alkenes ozonolysis under a large range of indoor conditions that can increase OH and HO2 concentrations. Simulations have been run changing nitrous acid (HONO) concentrations, NOx levels, photolysis rates and ventilation rates, showing that HONO can be the main source of indoor OH. Cleaning events using products containing d-limonene have been simulated at different periods of the day. These scenarios show that HOX concentrations can significantly increase in specific conditions. An assessment of the impact of indoor chemistry on the potential formation of secondary species such as formaldehyde (HCHO) and acetaldehyde (CH3CHO) has been carried out under various room configuration scenarios and a study of the HOx budget for different realistic scenarios has been performed. It has been shown that, under the simulation conditions, formaldehyde can be affected by oxidant concentrations via chemical production which can account for more than 10% of the total production, representing 6.5 ppb/h. On the other hand, acetaldehyde production is affected more by oxidation processes. When the photolysis rates are high, chemical processes are responsible for about 50% of the total production of acetaldehyde (9 ppb/h).Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Physicochimie des Processus de Combustion et de l'Atmosphère (PC2A) - UMR 8522

Research team(s) :

PhysicoChimie de l'Atmosphère (PCA)

Submission date :

2018-11-27T14:25:31Z
2018-12-05T15:53:42Z
2019-07-03T13:30:33Z
2020-03-12T15:01:25Z