ASTM D6584: GC Analysis of Glycerin Impurity in Biodiesel on MET-Biodiesel

column

MET-Biodiesel, 14 m x 0.53 mm I.D., 0.16 μm with integrated 2 m x 0.53 mm I.D. guard (28668-U)

oven

50 °C (1 min), 15 °C/min to 180 °C, 7 °C/min to 230 °C, 30 °C/min to 380 °C (10 min)

detector

FID, 380 °C

carrier gas

helium, 3.0 mL/min

injection

1 μL, cold on-column

sample

ASTM D6584 Standard Solution 1 (44899-U) plus Butanetriol Internal Standard (44896-U) and Tricaprin Internal Standard (44897-U), derivatized with MSTFA then diluted in heptane