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Aqueous photolysis of the sunscreen agent octyl-dimethyl- p-aminobenzoic acid :Formation of disinfection byproducts in chlorinated swimming pool water
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Aqueous photolysis of the sunscreen agent octyl-dimethyl- p-aminobenzoic acid :Formation of disinfection byproducts in chlorinated swimming pool water

Auteur : V A Sakkas; D L Giokas; D A Lambropoulou; T A Albanis Affiliation: Laboratory of Industrial Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece
Édition/format: Article Article : English
Source:Journal of Chromatography A, v1016 n2 (2003): 211-222
Autres bases de données: WorldCatWorldCatWorldCat
Résumé:
The photochemical behavior of the sunscreen agent octyl-dimethyl- p-aminobenzoic acid (ODPABA) was studied in different aqueous solutions and under different conditions. ODPABA photolysis was performed under laboratory conditions using a xenon light source and under natural sunlight conditions in sea, swimming pool as well as in distilled water. The influence of dissolved organic matter (DOM) on the degradation kinetics was also studied in the presence of various concentrations of humic acids (HA). The phototransformation was shown to proceed via pseudo-first-order reaction in all cases and the reaction rates followed the order: distilled water > swimming pool water > seawater, depending mainly on the presence of dissolved organic matter that retarded the photolysis reaction. Kinetic experiments were monitored with HPLC/UV-DAD and the half-lives ( t  Lire la suite...
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Détails

Type de document: Article
Tous les auteurs / collaborateurs: V A Sakkas; D L Giokas; D A Lambropoulou; T A Albanis Affiliation: Laboratory of Industrial Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece
ISSN:0021-9673
Note sur la langue: English
Identificateur Unique : 4923816800
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Résumé:

The photochemical behavior of the sunscreen agent octyl-dimethyl- p-aminobenzoic acid (ODPABA) was studied in different aqueous solutions and under different conditions. ODPABA photolysis was performed under laboratory conditions using a xenon light source and under natural sunlight conditions in sea, swimming pool as well as in distilled water. The influence of dissolved organic matter (DOM) on the degradation kinetics was also studied in the presence of various concentrations of humic acids (HA). The phototransformation was shown to proceed via pseudo-first-order reaction in all cases and the reaction rates followed the order: distilled water > swimming pool water > seawater, depending mainly on the presence of dissolved organic matter that retarded the photolysis reaction. Kinetic experiments were monitored with HPLC/UV-DAD and the half-lives ( t

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