title: Sun light degradation of 4-chloroaniline in waters and its effect on toxicity. A high performance liquid chromatography - Diode array - Tandem mass spectrometry study.
abstract: This paper studies the degradation reactions that 4-chloroaniline can naturally undergo in waters for the action of sun light. 10.00 mg L(-1) 4-chloroaniline aqueous solution, without any addition of organic solvent, are undergone to photoirradiation under conditions that simulate sun light. The degradation pathway, followed by HPLC-DAD-MS/MS methods, is complex since the pollutant gives rise to many photoproducts: the predominant species are characterized by m/z values of 217 (P5) and 218 (P6) and are compatible with dimeric structures of 4-chloroaniline. Vibrio fischeri tests indicate that the photoproducts of 4-chloroaniline are characterized by a toxicity level significantly greater than the precursor.
authors.affiliation: University of Piemonte Orientale, DISAV Dipartimento di Scienze dell'Ambiente e della Vita, viale T. Michel 11, 15121 Alessandria, Italy. fabio.gosetti@mfn.unipmn.it
authors.forename: Fabio
authors.initials: F
authors.lastname: Gosetti
authors.forename: Michela
authors.initials: M
authors.lastname: Bottaro
authors.forename: Valentina
authors.initials: V
authors.lastname: Gianotti
authors.forename: Eleonora
authors.initials: E
authors.lastname: Mazzucco
authors.forename: Paolo
authors.initials: P
authors.lastname: Frascarolo
authors.forename: Davide
authors.initials: D
authors.lastname: Zampieri
authors.forename: Caterina
authors.initials: C
authors.lastname: Oliveri
authors.forename: Aldo
authors.initials: A
authors.lastname: Viarengo
authors.forename: Maria Carla
authors.initials: MC
authors.lastname: Gennaro
mesh_terms: D048908:Aliivibrio fischeri / Q000187:drug effects; D000814:Aniline Compounds / Q000737:chemistry* / Q000633:toxicity*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D052918:Environmental Restoration and Remediation / Q000379:methods*; D010100:Oxygen / Q000032:analysis; D013472:Sunlight; D053719:Tandem Mass Spectrometry / Q000379:methods; D018675:Toxicity Tests; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D014874:Water Pollutants, Chemical; D010100:Oxygen; C004658:4-chloroaniline