TROBLESHOOTING GAS CHROMATOGRAPHY (GC). Parto Zist Behboud Reza Daj 8/16/2014. Today’s Overview. Introduction. Injection Port. Flow Controller. Detector. Data Processor. Electric Signal. Column Oven. Gas Cylinder. Column. Troubleshooting Approach. Sample Injector System.
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TROBLESHOOTING GAS CHROMATOGRAPHY (GC)
Parto Zist Behboud
Carrier Gas and Detector Gas
He and N2 are usuallyused.
(In the case of a capillary column, helium is desirable)
The gas of 99.999% or more of purity is used.
TCD ... No need
FID ... H2, Air
ECD ... N2(In the case of a packed column, carrier gas is surely N2.
In the case of a capillary column, N2 is used for makeup gas. )
FTD ... H2, Air
FPD ... H2, Air
BID ... He
Drifting or Cycling Baseline