title: Selective determination of hydrogen peroxide by adduct formation with a dinuclear iron(III) complex and flow injection analysis/tandem mass spectrometry.
abstract: A highly selective method for the determination of hydrogen peroxide is presented. In a flow injection analysis (FIA) instrument, the analyte is brought into contact with a dinuclear heptadentate iron(III) complex. The formation of the peroxide adduct is quantified using electrospray tandem mass spectrometry (ESI-MS/MS). Selected reaction monitoring (SRM) based on the transition from the triply charged peroxide adduct with m/z = 251.2 to the triply charged fragment ion of m/z = 240.5 is performed. The limit of detection for hydrogen peroxide is 10(-7) mol dm(-3), limit of quantification is 3 x 10(-7) mol dm(-3), and a linear range of 2.5 decades starting at the limit of quantification is observed.
authors.affiliation: König-Brauerei GmbH & Co. KG, Duisburg, Germany.
authors.forename: Diedrich
authors.initials: D
authors.lastname: Harms
authors.forename: Heinrich
authors.initials: H
authors.lastname: Luftmann
authors.forename: Felizitas K
authors.initials: FK
authors.lastname: Müller
authors.forename: Bernt
authors.initials: B
authors.lastname: Krebs
authors.forename: Uwe
authors.initials: U
authors.lastname: Karst