flame ionisation

Detection was by flame ionisation using hydrogen and air at 290 C together with helium as a make up gas to improve the detection limit.

The use of water allows the use of the flame ionisation detector (FID), which gives mass sensitive output for nearly all organic compounds.

Most research into petrochemical hydrocarbons using GCxGC has utilised flame ionisation detection (FID) but mass spectrometry (MS) is necessary to obtain the structural information necessary to identify unknown compounds.