Investigation of the reaction of ozone with isoprene, methacrolein and methyl vinyl ketone using the HELIOS chamber

Yangang Ren 1 Benoit Grosselin 1 Véronique Daële 1 Abdelwahid Mellouki 1
1 ICARE - Institut de Combustion, Aérothermique, Réactivité et Environnement
Abstract : The rate constants for the ozonolysis of isoprene (ISO), methacrolein (MACR) and methyl vinyl ketone (MVK) have been measured using the newly built large volume atmospheric simulation chamber at CNRS-Orleans (France), HELIOS (Chambre de simulation atmospherique a irradiation naturelle d'Orleans). The OH radical yields from the ozonolysis of isoprene, MACR and MVK have also been determined, as well as the gas phase stable products and their yields. The secondary organic aerosol yield for the ozonolysis of isoprene has been tentatively measured in the presence and absence of an OH radical scavenger. The measurements were performed under different experimental conditions with and without adding cyclohexane (cHX) as an OH radical scavenger. All experiments have been conducted at 760 torr of purified dry air (RH < 1%) and ambient temperature (T = 281-295 K). The data obtained are discussed and compared with those from the literature. The use of the HELIOS facility and its associated analytical equipment enables the derivation of kinetic parameters as well as mechanistic information under near realistic atmospheric conditions.
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Faraday Discussions, Royal Society of Chemistry, 2017, 200, pp.289-311. 〈10.1039/c7fd00014f〉
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Yangang Ren, Benoit Grosselin, Véronique Daële, Abdelwahid Mellouki. Investigation of the reaction of ozone with isoprene, methacrolein and methyl vinyl ketone using the HELIOS chamber. Faraday Discussions, Royal Society of Chemistry, 2017, 200, pp.289-311. 〈10.1039/c7fd00014f〉. 〈insu-01588945〉

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