Unravelling New Processes at Interfaces: Photochemical Isoprene Production at the Sea Surface.
Isoprene is an important reactive gas that is produced mainly in terrestrial ecosystems but is also produced in marine ecosystems. In the marine environment, isoprene is produced in the seawater by various biological processes. Here, we show that photosensitized reactions involving the sea-surface microlayer lead to the production of significant amounts of isoprene. It is suggested that H-abstraction processes are initiated by photochemically excited dissolved organic matter which will the degrade fatty acids acting as surfactants. This chemical interfacial processing may represent a significant abiotic source of isoprene in the marine boundary layer.
Université de Lyon 1 , Lyon, F-69626, France.|CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon , Villeurbanne, F-69626, France.
Raluca
R
Ciuraru
Université de Lyon 1 , Lyon, F-69626, France.|CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon , Villeurbanne, F-69626, France.
Ludovic
L
Fine
Leibniz-Institut für Troposphärenforschung e.V. (TROPOS) , Permoserstraße 15, 04318 Leipzig, Germany.
Manuela van
Mv
Pinxteren
Université de Lyon 1 , Lyon, F-69626, France.|CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon , Villeurbanne, F-69626, France.
Barbara
B
D'Anna
Leibniz-Institut für Troposphärenforschung e.V. (TROPOS) , Permoserstraße 15, 04318 Leipzig, Germany.
Hartmut
H
Herrmann
Université de Lyon 1 , Lyon, F-69626, France.|CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon , Villeurbanne, F-69626, France.
Christian
C
George
D002070:Butadienes / Q000737:chemistry*; D017753:Ecosystem; D005227:Fatty Acids / Q000737:chemistry; D045782:Hemiterpenes / Q000737:chemistry*; D010420:Pentanes / Q000737:chemistry*; D055668:Photochemical Processes; D012623:Seawater / Q000737:chemistry*; D055549:Volatile Organic Compounds / Q000737:chemistry
D002070:Butadienes; D005227:Fatty Acids; D045782:Hemiterpenes; D010420:Pentanes; D055549:Volatile Organic Compounds; C005059:isoprene; C008776:pelargonic acid