Fast Dual Column Analysis of Organochlorine Pesticides (EPA Method 8081) Using a GC Accelerator Kit and Rtx-CLPesticides and Rtx-CLPesticides2 Column Set

Injection
Columns	Rtx-CLPesticides 30 m, 0.25 mm ID, 0.25 µm (cat.# 11123-051)
	and Rtx-CLPesticides2 30 m, 0.25 mm ID, 0.20 µm (cat.# 11323-051)
	using Rxi guard column 5 m, 0.25 mm ID (cat.# 10029)
	with universal angled “Y” Press-Tight connector (cat.# 20403-261)

Standard/Sample	Organochlorine pesticide mix AB #2 (cat.# 32292)
	Pesticide surrogate mix (cat.# 32453)

Diluent:	n-Hexane
Inj. Vol.:	2 µL splitless (hold 0.3 min)
Liner:	Topaz 4 mm ID single taper inlet liner w/wool (cat.# 23303)
Inj. Temp.:	250 °C
Purge Flow:	40 mL/min
Oven
Oven Temp.:	120 °C (hold 0.3 min) to 200 °C at 60 °C/min to 230 °C at 25 °C/min to 320 °C at 35 °C/min (hold 1.5 min)
Carrier Gas	H₂, constant flow
Linear Velocity:	100 cm/sec

Detector	Micro-ECD @ 330 °C
Make-up Gas Flow Rate:	60 mL/min
Make-up Gas Type:	N₂
Data Rate:	50 Hz
Instrument	Agilent 7890A GC
Notes	A GC Accelerator oven insert kit (cat.# 23849) was installed in the instrument to speed up analysis. The analytical columns were custom products that were not on cages.

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