- Mass
sensitive detector.
- Operates
by mixing hydrogen with carrier gas and burning it at a jet in a stream of
air.
- A
collector electrode is placed above the flame.
- P.D.
is set up between the jet and the collector electrode.
- The
jet is at -ve potential w.r.t. the collector.
- Organic
compounds produce ions and electrons when burnt.
- Electrical
current is set up whose magnitude is proportional to the mass flow of the
sample.
Sunday, 22 December 2013
FLAME IONISATION DETECTOR IN GAS CHROMATOGRAPHY
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