Journal of Chromatographic Science · 2009 · 22 citations · 36 references
Natural SciencesChemistryPetroleum EngineeringAnalytical ChemistryMass Spectrometric AnalysisSpectroscopic AnalysisChromatographic Data AnalysisChromatographyGas ChromatographyInstrumental AnalysisMass SpectrometryVolatile Substance AnalysisFourier TransformFourier Transform Ion Cyclotron Resonance Mass SpectrometryFourier Transform Mass SpectrometryGas Chromatography-mass SpectrometryMass Spectral IdentificationMass Spectrometric IdentificationMass Spectrometry CharacterizationProton Affinity
Hydrocarbon isomers, present in crude petroleum, may yield similar gas chromatography (GC) retention times and indistinguishable mass spectral patterns. Hence, conventional GC-mass spectrometry (MS) may not provide sufficient data for identification of hydrocarbon isomers. Real-time proton affinity or gas-phase basicity "bracketing" provides an additional dimension to GC-MS analyses. Our GC-fourier transform (FT)-ion cyclotron resonance (ICR)-MS yielded an average mass measurement error of less than 3 ppm for components of a retail gasoline sample. The combined use of concurrent thermo-chemical measurements with GC-FT-ICR-MS data analysis allowed differentiation of various isomers such as C(8)H(10) species.
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