期刊
JOURNAL OF CHROMATOGRAPHY A
卷 886, 期 1-2, 页码 175-182出版社
ELSEVIER
DOI: 10.1016/S0021-9673(00)00479-9
关键词
derivatization, GC; vegetable oils; food analysis; carbonyl compounds
We have used a fast, sensitive and efficient method for the analysis of volatile carbonyl compounds (saturated aliphatic and unsaturated aldehydes) based on solid-phase microextraction with on-fibre derivatisation. Pentafluorophenylhydrazine was absorbed onto a poly(dimethylsiloxane)/divinylbenzene-coated and exposed to the vapours of aldehyde-containing matrices. The hydrazones formed on the fibre were desorbed into the gas chromatograph injection port and quantified by means of electron-capture detection with high sensitivity (10-90 fmol) and good reproducibility (RSD<10%). The method was applied to the headspace-sampling of volatile carbonyl compounds released during the thermally-induced degradation of sunflower oil. (C) 2000 Elsevier Science B.V. All rights reserved.
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