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Formation d'aérosols organiques secondaires en air intérieur : le rôle des produits ménagers

Abstract : Limonene is a widely employed Volatile Organic Compound (VOC) in scented products used in indoor environments such as household cleaners. Besides, ozone concentration, influenced by outdoor concentration and indoor sources, can be quite important to initiate gas phase chemistry and to possibly lead to SOAs formation in indoor environment. This work investigates the formation of SOAs from limonene ozonolysis in indoor conditions. It combines simulation chamber ozonolysis experiments and field studies in an experimental house allowing reproduction of real conditions for household products use situations. To search for limonene oxidation tracers, a new analytical approach is employed. Both gas and particulate phases are simultaneously collected, respectively on sorbent tubes and filters, and molecular composition is investigated using PFBHA and MTBSTFA derivatisation prior to thermal-desorption coupled with gas chromatography and mass spectrometry (TD-GC-MS) analysis. The field campaign was achieved in the experimental house MARIA especially designed for indoor air problematic studies. Experiments were performed following scenario of limonene containing household product use in realistic conditions. Limonene concentrations and particles formation and growth were observed consequently to the use of house cleaning product. Chemical characterization of both gas and particulate phases allowed identification of limonene ozonolysis tracers, such as limononaldehyde, limonaketone or ketolimonic acid. Therefore, the methodology employed allowed for the particle formation attribution to the ozonolysis of the emitted limonene, detected compounds toxicity evaluation. This study provides an insight into particle exposure and sources reduction in real indoor atmosphere.
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https://hal-ineris.archives-ouvertes.fr/ineris-00963420
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Submitted on : Friday, March 21, 2014 - 2:28:52 PM
Last modification on : Tuesday, November 19, 2019 - 2:46:07 AM

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  • HAL Id : ineris-00963420, version 1
  • INERIS : EN-2013-198

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Laura Chiappini, Stéphanie Rossignol, Caroline Rio, Aurélien Ustache, Sébastien Fable, et al.. Formation d'aérosols organiques secondaires en air intérieur : le rôle des produits ménagers. Pollution Atmosphérique : climat, santé, société, Le Kremlin Bicêtre : Revue Pollution atmosphérique, 2012, pp.99-106. ⟨ineris-00963420⟩

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