title: Degradation of aqueous 4-chloroaniline by ozonolysis and combined gamma-rays-ozone processing.
abstract: The decomposition of 4-chloroaniline (4-ClA), used as a model for water pollutants, was studied by ozonolysis as well as by gamma-rays in the presence of ozone under comparable conditions. The degradation process was followed by absorption spectroscopy and by HPLC-method as well. Depending on the ozone concentration (mg O3/min) introduced into the aqueous solution the substrate is decomposed to a mixture of carboxylic acids, which can be entirely degradated by prolonged treatment. The combined processing of 4-ClA by gamma-irradiation in the presence of ozone proved to lead even to more efficient degradation of the substrate. Some primary reaction steps are briefly discussed.
authors.affiliation: Centro Atomico Ezeiza, Comision Nacional de Energia Atomica, Presbiterio Juan Gonzales y Argon 15 (B1802 AYA), Buenos Aires, Argentina.
authors.forename: Mónica
authors.initials: M
authors.lastname: Sánchez
authors.forename: Nikola
authors.initials: N
authors.lastname: Getoff
authors.forename: Laszlo
authors.initials: L
authors.lastname: Sümegi
authors.forename: Robert
authors.initials: R
authors.lastname: Zona
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry* / Q000528:radiation effects; D005609:Free Radicals; D005720:Gamma Rays; D007700:Kinetics; D010126:Ozone; D014867:Water; D014874:Water Pollutants, Chemical
chemical_list: D000814:Aniline Compounds; D005609:Free Radicals; D014874:Water Pollutants, Chemical; D014867:Water; D010126:Ozone; C004658:4-chloroaniline