Incurred Cypermethrins in a QuEChERS Extract of Marijuana by GCxGC on Rxi-5Sil MS and Rtx-200

Standard/Sample
Column	Rxi-5Sil MS 30 m, 0.25 mm ID, 0.25 µm (cat.# 13623)
	Rtx-200 1.3 m, 0.25 mm ID, 0.25 µm (cat.# 15020)

Diluent:	Toluene
Injection
Inj. Vol.:	1 µL splitless (hold 1 min)
Liner:	Premium 4 mm single taper w/wool (cat.# 23303.1)
Inj. Temp.:	250 °C
Purge Flow:	40 mL/min
Oven
Oven Temp.:	Rxi-5Sil MS: 80 °C (hold 1 min) to 310 °C at 5 °C/min Rtx-200: 85 °C (hold 1 min) to 315 °C at 5 °C/min
Carrier Gas	He, corrected constant flow (2 mL/min)
Modulation
Modulator Temp. Offset:	20 °C
Second Dimension Separation Time:	3 sec
Hot Pulse Time:	0.9 sec
Cool Time between Stages:	0.6 sec

Detector	TOFMS
Transfer Line Temp.:	290 °C
Analyzer Type:	TOF
Source Temp.:	225 °C
Electron Energy:	70 eV
Mass Defect:	-20 mu/100 u
Solvent Delay Time:	5 min
Tune Type:	PFTBA
Ionization Mode:	EI
Acquisition Range:	45-550 amu
Spectral Acquisition Rate:	100 spectra/sec
Instrument	LECO Pegasus 4D GCxGC-TOFMS
Notes	Rtx-200 (cat.# 15020) is a 15 m column. A 1.3 m section was used here as the second dimension column.

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