TCD gas analysis

[mantri21]

we would like to know the TCD conditions (column temp, injector temp, carrier gas flow rate, auxillary temp, detector temp) for separation of CO,CO2,CH4,N2,C3H6 using H2 as a carrier gas. we are using molecular sieve 13x (60/80 mesh, 30 ft) for this. plz recommend us the required TCD conditions for that.
aslo let me know the retention time for each gases.
dinesh_mantri1@yahoo.com

[chromatographer1]

"CO,CO2,CH4,N2,C3H6 using H2 as a carrier gas. we are using molecular sieve 13x (60/80 mesh, 30 ft) "

Your elution order is N2, C1, CO, CO2 for the fixed gases for columns activated at temperatures above 330°C. Columns activated at lower temperatures can have CO eluting with methane or even before methane. For propane I have no data but I would suppose it elutes early in the chromatogram perhaps even with the CO peak.

Your detector can be at any temperature but I would recommend 100°C or higher.

injector and column temperatures should be at ambient or above.

Flow rates for 4mm or 2.1mm ID column should be 20cc/min or higher, and for 0.75mm or 1.0mm ID columns 5cc/min or higher.