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Method 8081B Chlorinated Pesticides on Rtx-CLPesticides2

ColumnRtx-CLPesticides2, 30 m, 0.32 mm ID, 0.25 µm (cat.# 11324)
Standard/SampleOrganochlorine pesticide mix AB #1 (cat.# 32291)
Pesticide surrogate mix, EPA 8080, 8081 (cat.# 32000)
Organochlorine pesticide mix C #1 (cat.# 32296)
Liner:Drilled Uniliner
Inj. Temp.:220 °C
Oven Temp.:80 °C (hold 1 min) to 300 °C at 9 °C/min (hold 10 min)
Carrier GasHe
DetectorECD @ 310 °C
Sample PreparationSample: 0.5 - 1.0 mL solvent extracted sample exchanged into hexane
Standards and surrogates were spiked into hexane
Tube: 3 mL, 250 mg CarboPrep 90
Tube conditioning: Apply 2 mL CH2Cl2:hexane (20:80) and pass through tube
Extract cleanup: Prepare collection rack with vials, place under each tube. Add 0.5 - 1.0 mL of extracted sample to tube and collect all solutions passing through. Do not expose carbon bed to air. Add 20 mL of CH2Cl2:hexane (20:80) to tube and allow it to elute using gravity feed.
Extract concentration: Solvent exchange extract to hexane
Do not allow extracts to dry completely
Concentrate extract to 0.5 - 1.0 mL
Sample is ready for analysis.