Principal Parameters Comparison
Conventional GC
FAST-GC
Column:
usually columns 0.25mm/0.32mm I.D. x 25m, 30m or 50m length.
Column:
usually columns 0.05mm/0.10mm I.D. x 2.5m, 5m or 10m length.
Temperature Rates:
1 - 15°C/min.
Temperature Rates:
15 - 60°C/min.
Injection:
using standard injection techniques, is possible to inject quite large
quantities (typically 1 - 2µL of a diluted solution with a split ratio of 1:20).
Injection:
the injected quantity has to be at least 10x less than conventional
GC.Usually split ratio of 1:100 or higher are usedwith diluted
solutions ( < 100ppm).
Carrier Gas:
typical flows are not less than 0.8mL/min with head pressures of 40 -
130kPa depending on column dimensions and carrier gas type
).
CarrierGas:
typical flows do not exceed 0.9 - 1mL/minwith higher head pressures
(until 200-250kPa for 0.10mm I.D. columns, and until 300kPa or more
for 0.05mm I.D. columns) anyway depending on column dimensions
and carrier gas type
.
PeakWidth:
2 - 5 seconds.
PeakWidth:
0.5 - 2 seconds.
Detector:
any type of detector for GC can be used.
Detector:
any type of detector for GC can be used. It is only necessary that the
acquisition frequency is at least 50Hz
).
AnalysisTime:
20 - 60min.
AnalysisTime:
1 - 10min.
MEGA s.n.c - Capillary Columns Laboratory -Via Plinio, 29 - 20025 Legnano (MI) - Italy - tel./fax:+39 0331.54.79.24 -
-
Since 1980
