title: Atmospheric photochemistry at a fatty acid-coated air-water interface.
abstract: Although fatty acids are believed to be photochemically inert in the actinic region, complex volatile organic compounds are produced during illumination of an air-water interface coated solely with a monolayer of carboxylic acid. When aqueous solutions containing nonanoic acid (NA) at bulk concentrations that give rise to just over a monolayer of NA coverage are illuminated with actinic radiation, saturated and unsaturated aldehydes are seen in the gas phase, and more highly oxygenated products appear in the aqueous phase. This chemistry is probably initiated by triplet-state NA molecules excited by direct absorption of actinic light at the water surface. Because fatty acids-covered interfaces are ubiquitous in the environment, such photochemical processing will have a substantial impact on local ozone and particle formation.
authors: Université Lyon, Université Claude Bernard Lyon 1, CNRS, Institut de Recherches sur la Catalyze et l'Environnement de Lyon (IRCELYON), F-69626 Villeurbanne, France, 2 avenue Albert Einstein, F-69626 Villeurbanne, France.
authors: Stéphanie
authors: S
authors: Rossignol
authors: Université Lyon, Université Claude Bernard Lyon 1, CNRS, Institut de Recherches sur la Catalyze et l'Environnement de Lyon (IRCELYON), F-69626 Villeurbanne, France, 2 avenue Albert Einstein, F-69626 Villeurbanne, France.
authors: Liselotte
authors: L
authors: Tinel
authors: Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 Clermont-Ferrand, France.
authors: Angelica
authors: A
authors: Bianco
authors: Université Lyon, Université Claude Bernard Lyon 1, CNRS, Institut de Recherches sur la Catalyze et l'Environnement de Lyon (IRCELYON), F-69626 Villeurbanne, France, 2 avenue Albert Einstein, F-69626 Villeurbanne, France.
authors: Monica
authors: M
authors: Passananti
authors: Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 Clermont-Ferrand, France.
authors: Marcello
authors: M
authors: Brigante
authors: Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON M5S 3H6, Canada. Department of Physical and Environmental Sciences, University of Toronto, 80 St. George St., Toronto, ON M5S 3H6, Canada. christian.george@ircelyon.univ-lyon1.fr jdonalds@chem.utoronto.ca.
authors: D James
authors: DJ
authors: Donaldson
authors: Université Lyon, Université Claude Bernard Lyon 1, CNRS, Institut de Recherches sur la Catalyze et l'Environnement de Lyon (IRCELYON), F-69626 Villeurbanne, France, 2 avenue Albert Einstein, F-69626 Villeurbanne, France. christian.george@ircelyon.univ-lyon1.fr jdonalds@chem.utoronto.ca.
authors: Christian
authors: C
authors: George