38 min. Peaks 1 (C16:24 ), 2 (7-methyl-6-hexadecenoic acid methyl ester) and C17:0 (all defined in Fig. 5) are nicely separated from the column bleed, and the other unidentified constituents. Considering C16:24, namely a FAME with an intermediate number of double bonds (compared to others present in the sample), it is character- ized by a peak base width (6) of about 700 ms.