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Gasoline Range Organics Oxygenates Rtx-VMS

ColumnRtx-VMS, 30 m, 0.25 mm ID, 1.40 µm (cat.# 19915)
Standard/Sample8260B MegaMix calibration mix kit (cat.# 30475)
California oxygenates mix (cat.# 30465)
VOA calibration mix #1 (ketones) (cat.# 30006)
502.2 Calibration mix #1 (gases) (cat.# 30042)
Unleaded gasoline: unweathered (cat.# 30096)
8260A Surrogate mix (cat.# 30240)
8260 Internal standard mix (cat.# 30074)
Non-oxygenated unleaded gasoline (cat.# custom)
Injectionpurge and trap split (split ratio 25:1)
Inj. Temp.:250 °C
Purge and Trap
Instrument:O.I. 4560 Purge and Trap Concentrator
Trap Type:#10 Tenax/silica gel/carbon molecular sieve
Purge: 11 min @ 20 °C, flow 38 mL/min
Desorb: 1.0 min @ 190 °C, flow 32 mL/min
Bake: 10 min @ 210 °C
Oven Temp.:35 °C (hold 7 min) to 90 °C at 4 °C/min to 220 °C at 45 °C/min (hold 1 min)
Carrier GasHe, constant flow
Flow Rate:1.3 mL/min
Dead Time:1.47 min @ 35 °C
Scan Range:35-260 amu
InstrumentAglient 5971A GC/MS
Notes10 mL sample @ 40°C
AcknowledgementPurge and Trap courtesy of O.I. Analytical.