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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/8839
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dc.contributor.authorGoncalves, C.en
dc.contributor.authorDimou, A.en
dc.contributor.authorSakkas, V.en
dc.contributor.authorAlpendurada, M. F.en
dc.contributor.authorAlbanis, T. A.en
dc.date.accessioned2015-11-24T16:44:50Z-
dc.date.available2015-11-24T16:44:50Z-
dc.identifier.issn0045-6535-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8839-
dc.rightsDefault Licence-
dc.subjectquinalphosen
dc.subjectphotolysisen
dc.subjectsunlighten
dc.subjectfateen
dc.subjectdegradation productsen
dc.subjectaqueous tio2 suspensionsen
dc.subjectorganophosphorus insecticidesen
dc.subjecttriazine herbicidesen
dc.subjectmass-spectrometryen
dc.subjectphotodegradationen
dc.subjectpesticideen
dc.subjectdissipationen
dc.subjectidentificationen
dc.subjectextractionen
dc.subjectpathwaysen
dc.titlePhotolytic degradation of quinalphos in natural waters and on soil matrices under simulated solar irradiationen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.chemosphere.2005.12.020-
heal.identifier.secondary<Go to ISI>://000240581000015-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0045653505014591/1-s2.0-S0045653505014591-main.pdf?_tid=f59c41734380fa4800998e98e44f142a&acdnat=1333022869_e8bbe2c6f35958a5e11598b38c5802c7-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.publicationDate2006-
heal.abstractThe photochemical persistence of quinalphos, one of the most widely used organophosphorous insecticides, was investigated in a variety of environmental matrices such as natural waters and soils of different composition. Simulated solar irradiation was obtained using a xenon are lamp (Suntest CPS+ apparatus) giving an irradiation intensity of 750 W m(-2) equivalent to a light dose per hour of irradiation of 2700 kJ m(-2). The phototransformation rates were determined using solid-phase microextraction (SPME) and ultrasonic extraction (USE) coupled to GC-FTD, while the identification of photoproducts was carried out by GC-MS. In water samples, the degradation kinetics followed a pseudo-first-order reaction and photolysis half-lives ranged between 11.6 and 19.0 h depending on the constitution of the irradiated media. Dissolved organic matter (DOM) has a predominant retarding effect, while nitrate ions accelerated the photodegradation kinetics. In soil samples, the degradation kinetics was monitored on I turn soil layer prepared on glass TLC plates. The kinetic behaviour of quinalphos was complex and characterized by a double step photoreaction, fast in the first 4 h of irradiation followed by a slow degradation rate up to 64 h. The photolysis half-life of quinalphos was shorter in sandy soil compared to the rest of the soil samples, varying between 16.9 and 47.5 h, and showing a strong dependence on the composition of the irradiated media. Among the transformation products formed mainly through photohydrolysis and photoisomerization processes, some photoproduct structures were proposed according to their mass spectral information. (c) 2005 Elsevier Ltd. All rights reserved.en
heal.journalNameChemosphereen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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