Resprep CarboPrep Plus SPE Cartridges (Lot 1236 Comparison)

1.2,4,5,6-Tetrachloro-m-xylene (TCMX)
2.Decachlorobiphenyl (DCB)
ColumnRtx-CLPesticides, 30 m, 0.32 mm ID, 0.32 µm (cat.# 11141)
Sample2,4,5,6-Tetrachloro-m-xylene (cat.# 32027)
Decachlorobiphenyl (BZ #209) (cat.# 32029)
Conc.:2 ppb
Inj. Vol.:4 µL splitless (hold 0.75 min)
Liner:Topaz 4.0 mm ID single taper inlet liner w/wool (cat.# 23303)
Inj. Temp.:250 °C
Purge Flow:50 mL/min
Oven Temp.:90 °C (hold 0.5 min) to 330 °C at 25 °C/min (hold 2 min)
Carrier GasHe, constant flow
Flow Rate:3.5 mL/min
DetectorMicro-ECD @ 340 °C
Make-up Gas Flow Rate:50 mL/min
Make-up Gas Type:N2
Data Rate:50 Hz
InstrumentAgilent/HP6890 GC
NotesConditioned a Resprep CarboPrep Plus SPE cartridge (cat.# 25845) by adding one cartridge volume of hexane:acetone (90:10) and letting it stand for five minutes before drawing the solvent down to frit level. Then, 1 mL of sample extract was loaded onto the cartridge and eluted with 9 mL of hexane:acetone (90:10).
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