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

Column | Rxi®-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 | |
Sample | Wellington 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 Gas | He, 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 |
Detector | µ-ECD @ 325 °C |
Data Rate: | 50 Hz |
Instrument | Agilent/HP6890 GC |
Notes | The 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). |
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