title: Light-induced degradation of metsulfuron-methyl in water.
abstract: Photodegradation of metsulfuron-methyl, a sulfonylurea herbicide, has been investigated in aqueous solution at different pH and excitation wavelengths. The efficiency of the process has been evaluated through quantum yield determinations. The identification of the photoproducts indicates that the major photochemical pathway is initiated by C-S bond dissociation followed by involvement of water to yield the main final products; the behaviour in water is shown to differ markedly from that in an organic environment.
authors.affiliation: Dipartimento di Chimica, Università di Modena e Reggio Emilia, Via Campi 183, 41100 Modena, Italy. caselli.monica@unimore.it
authors.forename: Monica
authors.initials: M
authors.lastname: Caselli
mesh_terms: D001190:Arylsulfonates / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D002853:Chromatography, Liquid; D008401:Gas Chromatography-Mass Spectrometry; D006540:Herbicides / Q000737:chemistry*; D008027:Light; D013058:Mass Spectrometry; D010782:Photolysis; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry*
chemical_list: D001190:Arylsulfonates; D006540:Herbicides; D014867:Water; C050296:metsulfuron methyl