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Formaldehyde on Rt-U-BOND

GC_CH01137
ColumnRt-U-BOND, 30 m, 0.53 mm ID, 20 µm (cat.# 19750)
SampleFormaldehyde (manual headspace)
Injection
Inj. Vol.:10 µL split (split ratio 10:1)
Liner:2 mm split Precision liner w/wool (cat.# 20823)
Inj. Temp.:200 °C
Split Vent Flow Rate:40 mL/min
Oven
Oven Temp.:100 °C (hold 1 min) to 150 °C at 25 °C/min (hold 3 min)
Carrier GasHe, constant pressure (7.7 psi, 53.1 kPa)
Linear Velocity:39 cm/sec @ 100 °C
DetectorTCD @ 200 °C
Make-up Gas Type:He
Data Rate:20 Hz
Sensitivity Mode:He/H2
InstrumentHP5890 GC
NotesSample Preparation: 10μl of formaldehyde solution added to a 20ml vial and heated to 60°C with CO2 added to the headspace. The formaldehyde solution is at a nominal concentration of 37% by weight with 10 to 15% methanol and the remaining amount water to stabilize the formaldehyde.