Abstract
A dynamic headspace-capillary gas chromatographic analysis technique with cryofocusing was investigated for the quantitation of volatile lipid oxidation products. Alkanals, t-2-alkenals, t,t-2,4-alkadienals, and 1-pentanol were purged, trapped onto Tenax TA, and then back-flushed into a gas chromatograph by thermal desorption. Back-flushed compounds were reconcentrated at -150 o C and then injected into a capillary column by rapid heating, resulting in a satisfactory separation with no band broadening. Volatile compounds were transferred quantitatively during thermal desorption
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