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Margarine on Rtx-2330

PeakstR (min)Structural Nomenclature
1.Methyl octanoate5.377C8:0
2.Methyl decanoate6.010C10:0
3.Methyl laurate7.123C12:0
4.Methyl myristate8.968C14:0
5.Methyl palmitate11.788C16:0
PeakstR (min)Structural Nomenclature
6.Methyl stearate15.557C18:0
7.Methyl elaidate16.364C18:1 trans-9
8.Methyl oleate16.701C18:1 cis-9
9.Methyl vaccenate16.861C18:1 cis-11
10.Methyl linoleate18.547C18:2 cis-9,12
11.Methyl linolenate20.764C18:3 cis-9,12,15
ColumnRtx-2330, 105 m, 0.25 mm ID, 0.20 µm (cat.# 10729)
Standard/SampleMargarine stick
Inj. Vol.:1 µL split (split ratio 100:1)
Liner:Topaz 4 mm ID straight inlet liner w/wool (cat.# 23300)
Inj. Temp.:250 °C
Oven Temp.:160 °C to 250 °C at 2 °C/min (hold 5 min)
Carrier GasH2, constant flow
Flow Rate:2 mL/min
DetectorFID @ 250 °C
InstrumentAgilent 7890A GC
Sample PreparationThe sample was prepared using sodium methoxide.