Organochlorine Pesticides on Rtx-CLPesticides and Rtx-CLPesticides2 by EPA Method 504.1 (Dual Column Analysis)

Injection
Columns	Rtx-CLPesticides2 30 m, 0.32 mm ID, 0.25 µm (cat.# 11324)
	and Rtx-CLPesticides 30 m, 0.32 mm ID, 0.32 µm (cat.# 11141)
	using Rxi guard column 5 m, 0.32 mm ID (cat.# 10039)
	with universal “Y” Press-Tight connector (cat.# 20405)

Standard/Sample	Dibromochloromethane (chlorodibromochloromethane) (cat.# 30271)
	Bromodichloromethane (cat.# 30251)
	504.1 calibration mix (cat.# 30239)
	1,1,1,2-tetrachloroethane (cat.# 30411)
	Bromoform (cat.# 30252)
Diluent:	n-Hexane
Conc.:	10 ng/mL
Inj. Vol.:	2 µL splitless (hold 0.50 min)
Liner:	Premium 4 mm single taper inlet liner w/wool (cat.# 23303.1)
Inj. Temp.:	200 °C
Purge Flow:	50 mL/min
Oven
Oven Temp.:	30 °C (hold 2.0 min) to 220 °C at 30 °C/min
Carrier Gas	He, constant flow
Linear Velocity:	60 cm/sec

Detector	Micro-ECD @ 220 °C
Make-up Gas Flow Rate:	50 mL/min
Make-up Gas Type:	He
Data Rate:	50 Hz
Instrument	Agilent/HP6890 GC
Notes	This chromatogram was obtained using an Agilent micro-ECD. To obtain comparable results, you will need to employ a micro-ECD in addition to confirmational dual-columns connected to a 5-meter guard column using a “Y” Press-Tight connector.

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