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Glycerol and Glycerides in Biodiesel on Rtx-Biodiesel TG (10 m) by ASTM D6584

GC_PC1368
PeakstR (min)
1.Glycerol4.682
2.1,2,4-Butanetriol5.624
3.Monoglyceridesas shown
4.Tricaprin19.174
5.Diglycerides20.13 - 20.80
6.Triglycerides22.24 - 24.70
ColumnRtx-Biodiesel TG with 2 m x 0.53 mm ID retention gap, 10 m, 0.32 mm ID, 0.1 µm (cat.# 10291)
Standard/SampleSoy B100 biodiesel
Tricaprin (1,2,3-tricaprinoylglycerol) (cat.# 33025)
(s)-(-)-1,2,4-Butanetriol (cat.# 33024)
Diluent:Heptane
Injection
Inj. Vol.:1 µL cool on-column
Temp. Program:Track oven
Oven
Oven Temp.:50 °C (hold 1 min) to 180 °C at 15 °C/min to 230 °C at 7 °C/min to 380 °C at 30 °C/min (hold 10 min)
Carrier GasH2, constant flow
Flow Rate:1.6 mL/min
DetectorFID @ 380 °C
InstrumentAgilent 7890B GC
Sample PreparationSample preparation followed ASTM D6584-17: Soy biodiesel B100 was fortified with internal standards (butanetriol and tricaprin) and derivatized using MSTFA.
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