EN 14110: GC Analysis of Methanol Impurity in Biodiesel on Equity-1 after SPME using 85 μm Polyacrylate Fiber

sample/matrix

2 g of B100 biodiesel containing 0.01% methanol and 0.0785% 2-propanol in a 4 mL vial

SPME fiber

PK3 SPME ASSY 85UM POLYACRYLATE FS 24GA MAN (WHITE) (57304)

extraction

headspace, 60 °C for 5 min

desorption process

250 °C for 0.75 min

column

Equity-1, 30 m x 0.32 mm I.D., 1.0 μm (28057-U)

oven

50 °C

inj. temp.

250 °C

detector

FID, 200 °C

carrier gas

helium, 30 cm/sec

liner

0.75 mm I.D., SPME type, straight design (unpacked)