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The sample gas contains CO and CO2 as well. Why does the CO and CO2 not interfere with the detection of C2H6O2?

April 26, 2017c2h6o2 CO2 detection Gas interfere sample

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The sample gas contains CO and CO2 as well. Why does the CO and CO2 not interfere with the detection of C2H6O2?

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CO and CO2 do not ionize in the flame of H2 and air and N2. CO forms CO2 by oxidation and does not ionize. CO2 also does not ionize. Only HCs ionize (form c+ ions) which the FID is sensitive to.