Structural Characterisation of Degradation Products Formed upon Di-n-Butyl Phthalate Radiolysis by High-Performance Liquid Chromatography Electrospray Tandem Mass Spectrometry

Structural Characterisation of Degradation Products Formed upon Di-n-Butyl Phthalate Radiolysis by High-Performance Liquid Chromatography Electrospray Tandem Mass Spectrometry

Structural characterisation of 15 degradation products, formed upon di-n-butyl phthalate (DBP) radiolysis, has been achieved using a high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS) coupling. The dissociation behaviour of protonated DBP was first established to be further...

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Veröffentlicht in:European journal of mass spectrometry (Chichester, England) England), 2010-01, Vol.16 (5), p.595-603
Hauptverfasser: Tintaru, Aura, Labed, Véronique, Charles, Laurence
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Labed, Véronique
Charles, Laurence
description Structural characterisation of 15 degradation products, formed upon di-n-butyl phthalate (DBP) radiolysis, has been achieved using a high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS) coupling. The dissociation behaviour of protonated DBP was first established to be further used to characterise structural deviation in the degradation products. Based on accurate mass measurements, compounds shown by HPLC-MS analysis were all found to be DBP oxidation products, amongst which various sets of isomers could be distinguished. Collision-induced dissociation experiments performed on each electrosprayed molecule first allowed unambiguous definition of the location of the additional oxygen atoms; that is, in the alkyl branch or on the aromatic ring. Although location of the oxygen atom in the alkyl branches could not always be precisely determined, relative abundances of some product ions allowed oxygenated functions to be identified
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title Structural Characterisation of Degradation Products Formed upon Di-n-Butyl Phthalate Radiolysis by High-Performance Liquid Chromatography Electrospray Tandem Mass Spectrometry
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