L1 /
6
CH3041
GC I
• Analytes must be volatile. Separations rely on the volatility of the gases &
their affinity for the liquid stationary phase that is supported
on fused silica (tubular column).
Column types: 1) packed
- column full of SP
2) capillary , open tubular column
with the
walls coated with the SP. 0.3mm, 30 - 60 m
SP: Carbowax (polar perfumes)
walls coated with the SP. 0.3mm, 30 - 60 m
SP: Carbowax (polar perfumes)
Detectors:
i) FID
Flame Ionisation Detector:oils,
FAMES
ii) FPD
Flame photometric: OP pesticides
iii) ECD
Electron capture : OC
pesticides
iv) MS
Mass spectrometer: PCBs, VOCs
...
