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Aroclors and BFRs on Rxi-XLB and Rxi-17Sil MS (GCxGC)

GC_EV1238
ColumnRxi®-XLB 30 m, 0.25 mm ID, 0.25 µm (cat.# 13723)
Rxi-17Sil MS 1 m, 0.15 mm ID, 0.15 µm (cat.# 43820)
  with IP deactivated guard column 0.2 m, 0.15 mm ID
Standard/SampleWellington BFR-PAR mix
Aroclor
Diluent:Isooctane
Injection
Inj. Vol.:1.0 µL splitless (hold 1.0 min)
Liner:Premium 4 mm single taper w/wool (cat.# 23303.5)
Inj. Temp.:250 °C
Purge Flow:20 mL/min
Oven
Oven Temp.:Rxi®-XLB: 80 °C (hold 1 min) to 120 °C at 10 °C/min to 300 °C at 3 °C/min
Rxi-17Sil MS: 85 °C (hold 1 min) to 125 °C at 10 °C/min to 305 °C at 3 °C/min
Carrier GasHe, corrected constant flow (2.0 mL/min)
Modulation
Modulator Temp. Offset:20 °C
Second Dimension Separation Time:3.5 sec
Hot Pulse Time:1.25 sec
Cool Time between Stages:0.50 sec
Detectorµ-ECD @ 325 °C
Data Rate:50 Hz
InstrumentAgilent/HP6890 GC
NotesThe Rxi-17Sil MS column (cat.# 43820) is a 10 m column. A 1 m section was used as a second dimension column.
Guard column was connected using a Siltek-treated universal Press-Tight connector (cat.# 20480).