has proper occurrent part gas chromatography flame ionisation detection gas chromatography-flame ionisation detection gas chromatography flame ionization detection Flame ionisation detection that is sensitive to compounds containing C-H bonds. The eluent is mixed with H2 and air and ignited. Any positively-charged radicals resulting from this process are collected at a cathode allowing the current to be measured. FIX:0000859 CHMO:0001736 gas chromatography-flame ionization detection GC-FID gas chromatography flame ionisation detection GC/FID GCFID