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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/8698
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dc.contributor.authorLambropoulou, D. A.en
dc.contributor.authorAlbanis, T. A.en
dc.date.accessioned2015-11-24T16:43:26Z-
dc.date.available2015-11-24T16:43:26Z-
dc.identifier.issn0021-9673-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8698-
dc.rightsDefault Licence-
dc.subjectheadspace analysisen
dc.subjectsolid-phase microextractionen
dc.subjectwater analysisen
dc.subjectenvironmental analysisen
dc.subjectflame thermionic detectionen
dc.subjectpesticidesen
dc.subjectorganophosphorus compoundsen
dc.subjectchromatography mass-spectrometryen
dc.subjectvolatile organic-compoundsen
dc.subjectgas-chromatographyen
dc.subjectquantitative-analysisen
dc.subjectenvironmental wateren
dc.subjectelectron-captureen
dc.subjectdrinking-wateren
dc.subjecttrace analysisen
dc.subjectpesticidesen
dc.subjectnitrogenen
dc.titleOptimization of headspace solid-phase microextraction conditions for the determination of organophosphorus insecticides in natural watersen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.secondary<Go to ISI>://000169975100023-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0021967301009530/1-s2.0-S0021967301009530-main.pdf?_tid=3f070cefa0869887458ea33b4e032761&acdnat=1333023072_e15f4bbc81096675fb9d6b2c571da296-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.publicationDate2001-
heal.abstractHeadspace solid-phase microextraction (HS-SPME) has been developed for the analysis of seven organophosphorus insecticides, i.e. diazinon, fenitrothion, fenthion, ethyl parathion, methyl bromophos, ethyl bromophos and ethion in natural waters. Their determination was carried out using gas chromatography with flame thermionic and mass spectrometric detection. To perform the HS-SPME, two types of fibre have been assayed and compared: polyacrylate (PA 85 mum), and polydimethylsiloxane (PDMS 100 mum). The main parameters, affecting the HS-SPME process such as temperature, salt additives, memory effect, stirring rate and adsorption-time profile were studied. The method was developed using spiked natural waters such as ground, sea, river and lake water in a concentration range of 0.05-1 mug/l. The HS-SPME conditions were optimized in order to obtain the maximum sensitivity. Detection limits varied from 0.01 to 0.04 mug/l and relative standard deviations (RSD < 17%) were obtained showing that the precision of the method is reliable. The method showed also good linearity for the tested concentration range with regression coefficients ranging between 0.985 and 0.999. Recoveries were in relatively high levels for all the analytes and ranged from 80 to 120%. Water samples collected from different stations along the flow of Kalamas river (NW Greece) were analyzed using the optimized conditions in order to evaluate the potential of the proposed method to the trace-level screening determination of organophosphorus insecticides. The analysis with HS-SPME has less background interference and the advantage of its non-destructive nature reveal the possibility of the repetitive use of the SPME fibre. (C) 2001 Elsevier Science BN. All rights reserved.en
heal.journalNameJournal of Chromatography Aen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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