A New Method for the Determination of Carbonyl Compounds in Wines by Headspace Solid-Phase Microextraction Coupled to Gas Chromatography−Ion Trap Mass Spectrometry

摘要: A new analytical method for the determination of 18 carbonyl compounds [2,3-pentadione, hexanal, (E)-2-hexen-1-al, octanal, acetoin, (E)-2-octenal, furfural, decanal, (E)-2-nonenal, benzaldehyde, 5-methylfurfural, (E,E)-2-cis-6-nonadienal, β-damascenone, phenylacetaldehyde, acetophenone, (E,E)-2,4-decadienal, benzophenone, and vanillin] in wines using automated headspace solid-phase microextraction (HS/SPME) coupled to gas chromatography−ion trap mass spectrometry (GC−ITMS) was developed. Five fibers with different polarities were tested, a study influence various factors such as time extraction temperature, desorption pH, ionic strength content tannins, anthocyans, sucrose, SO2, alcoholic degree conducted. These optimized synthetic wine doped analytes. The proposed affords wide ranges linearity, good linearity (r2 > 0.998), values repeatability reproducibility lower than 5.5% RSD, de...