Page 179 - Tandem Techniques

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development of another cryostatic GC/FTIR interface (perhaps at a reduced cost) and, sometime in the
future, a new instrument will be manufactured and become commercially available. Without doubt, a
device with similar performance specifications to that of the Cryostatic will eventually be required.
TM

Figure 4.27
Chromatograms Obtained From the Tenax Trap
1:CO2 and H20, 2:hexanal, 3:heptanal, 4:butyric acid, 5:pentanoic acid,
6: benzaldehyde, 7:acid and aldehyde, 8:acid, 9:aromatic aldehyde,
10:ketone, 11:unsaturated acid, 12: aldehyde and acid, 13: acid, 14: aldehyde,
15:siloxane, 16:aldehyde, 17: aldehyde, 18; unknown, 18: unknown, 19: acid,
20:acid, 21:acid, 22:aldehyde and acid, 23:acid, 24:acid, 25:acid lactone,
26:ketone, 27:unknown, 28:acid lactone, 29: unknown, 30: aliphatic
hydrocarbon, 31:aliphatic hydrocarbon, 32:aromatic acid, 33:aliphatic
hydrocarbon, 34;aliphatic hydrocarbon, 35:unknown. 36:aromatic
hydrocarbon, 37:aromatic hydrocarbon.
Courtesy of the Perkin Elmer Corporation

Synopsis

The first GC/IR instrument was a triplet system that monitored both IR spectra and MS spectra
simultaneously. Each peak was collected in a trap,