title: Atmospheric reactions of 9,10-anthraquinone.
abstract: The probably carcinogenic compound 9,10-anthraquinone is mainly existing in the atmosphere in the particulate phase and is often detected and measured among other oxygenated PAHs in atmospheric samples. Its fate, once released or formed in the atmosphere, still remains unknown. In this work, heterogeneous chemical oxidation processes of 9,10-anthraquinone were investigated with ozone (O3), nitrogen dioxide (NO2) and hydroxyl radical (OH). The study of 9,10-anthraquinone adsorbed on silica particles showed no reactivity with O3 and NO2. On the other hand, the reaction with OH radicals was observed and led to the formation of 1-hydroxy-9,10-anthraquinone, another oxidation product recognized as possibly carcinogenic to humans. This study showed that reactions with ozone and nitrogen dioxide are unlikely to contribute to atmospheric degradation of 9,10-anthraquinone, whereas reactions with OH radicals could be involved in 9,10-anthraquinone degradation processes, even if such reaction is probably very slow under ambient conditions.
authors.affiliation: Univ. Bordeaux, EPOC, UMR 5805, F-33405 Talence cedex, France; CNRS, EPOC, UMR 5805, F-33405 Talence cedex, France.
authors.forename: Killian
authors.initials: K
authors.lastname: Miet
authors.affiliation: Institut National de l'Environnement Industriel et des RISques (INERIS), Parc Technologique Alata, BP2, 60550 Verneuil en Halatte, France.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Albinet
authors.affiliation: Univ. Bordeaux, EPOC, UMR 5805, F-33405 Talence cedex, France; CNRS, EPOC, UMR 5805, F-33405 Talence cedex, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Budzinski
authors.affiliation: Univ. Bordeaux, EPOC, UMR 5805, F-33405 Talence cedex, France; CNRS, EPOC, UMR 5805, F-33405 Talence cedex, France. Electronic address: eric.villenave@u-bordeaux.fr.
authors.forename: Eric
authors.initials: E
authors.lastname: Villenave
mesh_terms: D000327:Adsorption; D000880:Anthraquinones / Q000737:chemistry*; D001272:Atmosphere / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000737:chemistry; D009585:Nitrogen Dioxide / Q000737:chemistry; D016877:Oxidants / Q000737:chemistry*; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D000880:Anthraquinones; D016877:Oxidants; C042834:9,10-anthraquinone; D017665:Hydroxyl Radical; D010126:Ozone; D012822:Silicon Dioxide; D009585:Nitrogen Dioxide
keywords: 1-Hydroxy-9,10-anthraquinone; 9,10-Anthraquinone; Hydroxyl radical; Kinetics; Nitrogen dioxide; Ozone