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dc.contributor.authorPaleologos, E. K.en
dc.contributor.authorKoupparis, M. A.en
dc.contributor.authorKarayannis, M. I.en
dc.contributor.authorVeltsistas, P. G.en
dc.date.accessioned2015-11-24T16:42:49Z-
dc.date.available2015-11-24T16:42:49Z-
dc.identifier.issn0003-2700-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8603-
dc.rightsDefault Licence-
dc.subjectsensitive spectrophotometric determinationen
dc.subjectatomic-absorption spectrometryen
dc.subjectelectron-spin-resonanceen
dc.subjectthermometric determinationen
dc.subjectkinetic determinationen
dc.subjectgallic aciden
dc.subjectoxidationen
dc.subjectsamplesen
dc.subjectbromateen
dc.subjectspeciationen
dc.titleNonaqueous catalytic fluorometric trace determination of vanadium based on the pyronine B-hydrogen peroxide reaction and flow injection after cloud point extractionen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.secondary<Go to ISI>://000171044600006-
heal.identifier.secondaryhttp://pubs.acs.org/doi/pdfplus/10.1021/ac010395k-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.publicationDate2001-
heal.abstractThe catalytic effect of vanadium on the pyronine B-H2O2 system is examined. Enhancement of the catalytic reaction rate along with the efficiency and selectivity against vanadium is achieved in a formic acid environment in the presence of a nonionic surfactant (Triton X-114). Elimination of drastic interference caused by inorganic acids and aqueous matrix along with a 50-fold preconcentration of vanadium are facilitated through cloud point extraction of its neutral complex with 8-quinolinol in an acidic solution. Subsequent flow injection analysis (FIA) with fluorometric detection renders the proposed method ideal for selective and cost-effective determination of as little as 0.020 mug L-1 vanadium in environmental, biological, and food substrates. The preconcentration step can be applied simultaneously to multiple samples, allowing for massive preparation prior to analysis, compensating, thus, for the time-consuming procedure.en
heal.journalNameAnal Chemen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ

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