title: High-NOxPhotooxidation of n-Dodecane: Temperature Dependence of SOA Formation.
abstract: The temperature and concentration dependence of secondary organic aerosol (SOA) yields has been investigated for the first time for the photooxidation of n-dodecane (C12H26) in the presence of NOxin the CESAM chamber (French acronym for "Chamber for Atmospheric Multiphase Experimental Simulation"). Experiments were performed with and without seed aerosol between 283 and 304.5 K. In order to quantify the SOA yields, a new parametrization is proposed to account for organic vapor loss to the chamber walls. Deposition processes were found to impact the aerosol yields by a factor from 1.3 to 1.8 between the lowest and the highest value. As with other photooxidation systems, experiments performed without seed and at low concentration of oxidant showed a lower SOA yield than other seeded experiments. Temperature did not significantly influence SOA formation in this study. This unforeseen behavior indicates that the SOA is dominated by sufficiently low volatility products for which a change in their partitioning due to temperature would not significantly affect the condensed quantities.
authors.affiliation: Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR7583, CNRS, Université Paris-Est-Créteil (UPEC) et Université Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL) , Créteil, France.
authors.forename: Houssni
authors.initials: H
authors.lastname: Lamkaddam
authors.affiliation: Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR7583, CNRS, Université Paris-Est-Créteil (UPEC) et Université Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL) , Créteil, France.
authors.forename: Aline
authors.initials: A
authors.lastname: Gratien
authors.affiliation: Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR7583, CNRS, Université Paris-Est-Créteil (UPEC) et Université Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL) , Créteil, France.
authors.forename: Edouard
authors.initials: E
authors.lastname: Pangui
authors.affiliation: Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR7583, CNRS, Université Paris-Est-Créteil (UPEC) et Université Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL) , Créteil, France.
authors.forename: Mathieu
authors.initials: M
authors.lastname: Cazaunau
authors.affiliation: Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR7583, CNRS, Université Paris-Est-Créteil (UPEC) et Université Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL) , Créteil, France.
authors.forename: Bénédicte
authors.initials: B
authors.lastname: Picquet-Varrault
authors.affiliation: Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR7583, CNRS, Université Paris-Est-Créteil (UPEC) et Université Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL) , Créteil, France.
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Doussin
mesh_terms: D000336:Aerosols; D005740:Gases; D009930:Organic Chemicals; D013696:Temperature; D014835:Volatilization
chemical_list: D000336:Aerosols; D005740:Gases; D009930:Organic Chemicals