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Food Packaging Volatiles by Purge & Trap GC/MS on Rtx-5MS

ColumnRtx-5MS, 30 m, 0.25 mm ID, 1.00 µm (cat.# 12653)
SampleOverwrap, lid of bowl
Injectionpurge and trap split (split ratio 20:1)
Liner:1 mm ID
Inj. Temp.:250 °C
Purge and Trap
Instrument:Tekmar LSC-3100 purge & trap
Trap Type:Vocarb 3000, type K
Purge: 10 min @ 60 °C, flow 40 mL/min
Dry Purge: 3 min, flow 40 mL/min
Desorb Preheat Temp.:220 °C
Desorb: 2 min @ 245 °C, flow 40 mL/min
Bake: 6 min @ 230 °C
Interface Connection:injection port
Transfer Line Tubing:Siltek/Sulfinert tubing
Oven Temp.:50 °C to 92 °C at 3 °C/min to 220 °C at 20 °C/min (hold 1 min)
Carrier GasHe, constant flow
Flow Rate:1 mL/min
Linear Velocity:36 cm/sec
Source Temp.:280 °C
Electron Energy:EI @ 70 eV
Scan Range:35-260 amu
InstrumentHP6890 GC & 5973 MSD
Notescatalog number 22501 Siltek/Sulfinert tubing obsolete, recommend catalog number 29234