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RESEARCH PRODUCT
Characterization of methyl orange and its photocatalytic degradation products by HPLC/UV–VIS diode array and atmospheric pressure ionization quadrupole ion trap mass spectrometry
Giuseppe MarcìLeonardo PalmisanoAlessandra Bianco PrevotClaudio BaiocchiEdmondo PramauroMaria Carla Brussinosubject
Atmospheric pressureChemistryAnalytical chemistrySubstrate (chemistry)Condensed Matter PhysicsMass spectrometryHigh-performance liquid chromatographychemistry.chemical_compoundIonizationMethyl orangePhysical and Theoretical ChemistryQuadrupole ion trapDyeingInstrumentationSpectroscopydescription
Abstract HPLC/UV–VIS diode array and HPLC/MS techniques were successfully applied to the analysis of sulfonated molecules present in samples coming from the photocatalytic degradation of the azo dye indicator, methyl orange. The substrate was chosen as a simple model for the study of reactions involving the more complex commercial products used for the dyeing of textile fibers. Unexpected MS fragmentation path was observed, due to the very stable methyl orange molecular structure. The chromatographic information were combined with the obtained MS, MS/MS data and the UV–VIS diode array spectra and allowed to rationalize the molecular structures attributable to the various degradation products.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-03-01 | International Journal of Mass Spectrometry |