GCxGC Contour Plot of Riser Pipe Oil in 2010 Gulf Oil Spill (Rxi-17Sil MS and Rxi-1ms)

ColumnRxi-17Sil MS 30 m, 0.25 mm ID, 0.25 µm (cat.# 14123)
Rxi-1ms 1.2 m, 0.15 mm ID, 0.15 µm (cat.# 43800)
Diluent:Methylene chloride
Inj. Vol.:1 µL splitless (hold 1 min)
Liner:Premium 4mm Single Taper w/Wool (cat.# 23303.1)
Inj. Temp.:250 °C
Purge Flow:40 mL/min
Oven Temp.:Rxi-17Sil MS: 40 °C (hold 1 min) to 320 °C at 3.5 °C/min (hold 4 min)
Rxi-1ms: 45 °C (hold 1 min) to 325 °C at 3.5 °C/min (hold 4 min)
Carrier GasHe, corrected constant flow (2.2 mL/min)
Modulator Temp. Offset:20 °C
Second Dimension Separation Time:4 sec
Hot Pulse Time:1.4 sec
Cool Time between Stages:0.6 sec
Transfer Line Temp.:300 °C
Analyzer Type:TOF
Source Temp.:250 °C
Electron Energy:70 eV
Mass Defect:50 mu/100 u
Solvent Delay Time:5 min
Tune Type:PFTBA
Ionization Mode:EI
Acquisition Range:45-550 amu
Spectral Acquisition Rate:200 spectra/sec
InstrumentLECO Pegasus 4D GCxGC-TOFMS
NotesRxi-1ms (cat.# 43800) is a 10 m column. A 1.2 m section was used as the second dimension column.
AcknowledgementDr. Ed Overton, Professor Emeritus at Louisiana State University, for providing the riser pipe oil sample.
Download PDF

Printing tips! To print chromatograms full page, change the print settings in the print dialogue window of your PDF reader software: 1) "fit" or "fit to page", 2) "landscape" for wide chromatograms or "portrait" for tall chromatograms.