Freons on Rtx-200

	Peaks	t_R (min)
1.	Dichlorodifluoromethane	10.489
2.	Chlorodifluoromethane	10.578
3.	Ethane, 1,1-difluoro-	10.879
4.	Dichlorotetrafluoroethane	11.309
5.	Ethane, 1-chloro-1,1-difluoro-	11.797
6.	Vinyl bromide	14.114
7.	Trichloromonofluoromethane	14.196
8.	2,2-Dichloro-1,1,1-trifluoroethane	16.282
9.	1,1,2-Trichlorotrifluoroethane	17.693

Injection
Column	Rtx-200, 105 m, 0.25 mm ID, 1.00 µm (cat.# 15059)
Standard/Sample	Dichlorodifluoromethane (cat.# 30275)
	Freons standard (cat.# custom)
	Trichlorofluoromethane (cat.# 30421)
Diluent:	Methanol
Conc.:	500 ppm
Inj. Vol.:	1 µL split (split ratio 400:1)
Liner:	Topaz 4.0 mm ID Precision inlet liner w/ wool (cat.# 23305)
Inj. Temp.:	250 °C
Split Vent Flow Rate:	400 mL/min
Gas Saver Time:	2 min
Gas Saver Flow Rate:	20 mL/min
Oven
Oven Temp.:	32 °C (hold 20 min)
Carrier Gas	He, constant flow
Flow Rate:	1 mL/min
Linear Velocity:	19.303 cm/sec @ 32 °C
Dead Time:	9.553 min @ 40 °C

Detector

Mode:

Scan

Scan Program:

Group	Start Time (min)	Scan Range (amu)	Scan Rate (scans/sec)
1	10	50-500	10.8

Transfer Line Temp.:

250 °C

Analyzer Type:

Quadrupole

Source Type:

Extractor

Source Temp.:

230 °C

Quad Temp.:

150 °C

Electron Energy:

1708 eV

Tune Type:

PFTBA

Ionization Mode:

Instrument

Agilent 7890B GC & 5977B MSD

Sample Preparation

Standards were combined and diluted to 500 ppm, then transferred to a 2 mL vial (cat.# 21142) and capped with a short screw cap (cat.# 24498).

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