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- Posts: 15
- Joined: Wed Feb 15, 2017 6:29 pm
My goal is to evaluate CO2 concentration in gaseous samples mixed with CO2/Air/Freon.
Expected concentrations will range from 1-20% CO2 v/v.
I'm currently using a GC-MS that is configured with a gas sampling valve, He carrier, LN2 cooling, and a RTX-1 column to identify impurities in Halon 1301 samples.
I also have a TCD and FID available to use.
My initial intuition suggests using the current setup (GC-MS, RTX-1, ~-30C oven temp), and setting the AMU mass range on the MS between 44-145 in order to pick up the CO2 m/z of 44.
It seems that would quantify CO2 (and freon) with this approach, but not the air. Therefore, I would be short of calculating the CO2 concentration.
I'm not sure if that is correct, and if there may be a better option with what I have available.
What would you advise? I am open to purchasing new equipment, if necessary (budget <$10K).