5.7: GC-MS Instruments at Duke
- Page ID
- 401503
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The two GC-MS instruments in the teaching labs at Duke are Agilent 7820A and 5975. You will use the front column (DB5.625, non-polar) and the MS detector in this module.
- Each instrument is equip with two detectors.
- The GC has a built in FID detector. Hydrogen and Air cylinders support the FID (H2; 28 psi; air 58-60 psi)
- A tandem quadrupole mass spectrometer (MS) sits to the left of the GC component.
- Each instrument's oven is equip with two column positions (front and back).
- The front column is connected to the MS and is a DB5.625 (non-polar) column.
- The back column (if installed) is connected to the FID and is a DBwax (polar) column
- The Carrier Gas is helium (He) from a compressed cylinder; feed pressure is 40-50 psi.