title: Nitrogen-Containing Low Volatile Compounds from Pinonaldehyde-Dimethylamine Reaction in the Atmosphere: A Laboratory and Field Study.
abstract: Pinonaldehyde, which is among the most abundant oxidation products of α-pinene, and dimethylamine were selected to study the formation of N-containing low volatile compounds from aldehyde-amine reactions in the atmosphere. Gas phase reactions took place in a Tedlar bag, which was connected to a mass spectrometer ionization source via a short deactivated fused silica column. In addition to on-line analysis, abundance of gaseous precursors and reaction products were monitored off-line. Condensable products were extracted from the bag's walls with a suitable solvent and analyzed by gas chromatography coupled to chemical ionization high-resolution quadrupole time-of-flight mass spectrometry and by ultra-high-performance liquid chromatography coupled to electrospray ionization Orbitrap mass spectrometry. The reactions carried out resulted in several mid-low vapor pressure nitrogen-containing compounds that are potentially important for the formation of secondary organic aerosols in the atmosphere. Further, the presence of brown carbon, confirmed by liquid chromatography-UV-vis-mass spectrometry, was observed. Some of the compounds identified in the laboratory study were also observed in aerosol samples collected at SMEAR II station (Hyytiälä, Finland) in August 2015 suggesting the importance of aldehyde-amine reactions for the aerosol formation and growth.
authors.affiliation: Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki , P.O. Box 55, 00014 Helsinki, Finland.
authors.forename: Geoffroy
authors.initials: G
authors.lastname: Duporté
authors.affiliation: Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki , P.O. Box 55, 00014 Helsinki, Finland.
authors.forename: Jevgeni
authors.initials: J
authors.lastname: Parshintsev
authors.affiliation: Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki , P.O. Box 55, 00014 Helsinki, Finland.
authors.forename: Luís M F
authors.initials: LM
authors.lastname: Barreira
authors.affiliation: Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki , P.O. Box 55, 00014 Helsinki, Finland.
authors.forename: Kari
authors.initials: K
authors.lastname: Hartonen
authors.affiliation: Division of Atmospheric Sciences, Department of Physics, University of Helsinki , P.O. Box 64, 00014 Helsinki, Finland.
authors.forename: Markku
authors.initials: M
authors.lastname: Kulmala
authors.affiliation: Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki , P.O. Box 55, 00014 Helsinki, Finland.
authors.forename: Marja-Liisa
authors.initials: ML
authors.lastname: Riekkola
mesh_terms: D000336:Aerosols; D001272:Atmosphere / Q000737:chemistry*; D004123:Dimethylamines; D009584:Nitrogen; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D000336:Aerosols; D004123:Dimethylamines; D009584:Nitrogen