Journal
FARADAY DISCUSSIONS
Volume 200, Issue -, Pages 289-311Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7fd00014f
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Funding
- Labex Voltaire [ANR-10-LABX-100-01]
- ANR [13-BS06-0002-01]
- ARD PIVOTS program - Centre-Val de Loire regional council
- European Union [730997]
- China Scholarship Council
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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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