Inhalants on Rtx-BAC Plus 1 and Plus 2 Column Set

Standard/Sample
Columns	Rtx-BAC Plus 1 30 m, 0.32 mm ID, 1.8 µm (cat.# 18004)
	and Rtx-BAC Plus 2 30 m, 0.32 mm ID, 0.6 µm (cat.# 18006)
	using Rxi guard column 5 m, 0.32 mm ID (cat.# 10039)
	with universal “Y” Press-Tight connector (cat.# 20405-261)

Diluent:	Water
Conc.:	50 µg/mL each inhalant
Injection	headspace-loop split (split ratio 50:1)
Liner:	1 mm straight inlet liner (cat.# 20972)
Headspace-Loop
Inj. Port Temp.:	220 °C
Instrument:	Tekmar HT3
Inj. Time:	3 min
Transfer Line Temp.:	125 °C
Valve Oven Temp.:	125 °C
Sample Temp.:	70 °C
Sample Equil. Time:	5 min
Vial Pressure:	30 psi
Pressurize Time:	2 min
Loop Pressure:	20 psi
Loop Fill Time:	1 min
Oven
Oven Temp.:	40 °C (hold 4 min) to 120 °C at 10 °C/min (hold 0 min)
Carrier Gas	He, constant flow
Linear Velocity:	50 cm/sec

Detector	FID @ 240 °C
Make-up Gas Flow Rate:	30 mL/min
Make-up Gas Type:	N₂
Instrument	Agilent/HP6890 GC
Notes	The Rtx-BAC Plus 1 and Plus 2 columns were connected to the injection port using a ~12 inch section of guard column between the injection port and the universal Y Press-Tight connector. Headspace concentrator courtesy of Teledyne Tekmar, Mason, OH.

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