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

Oven
Column	Rtx-5MS, 30 m, 0.25 mm ID, 1.00 µm (cat.# 12653)
Standard/Sample	Overwrap, lid of bowl
Injection	purge 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 Gas	He, constant flow
Flow Rate:	1 mL/min
Linear Velocity:	36 cm/sec

Detector	MS
Mode:	Scan
Source Temp.:	280 °C
Electron Energy:	EI @ 70 eV
Scan Range:	35-260 amu
Instrument	HP6890 GC & 5973 MSD
Notes	catalog number 22501 Siltek/Sulfinert tubing obsolete, recommend catalog number 29234

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