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Analysis of Gases via Gas Chromatography - Part 3: CO and CO2

CO and CO2 are products that are present in many industrial processes. CO2 is used in many applications varying from propellants, refrigerants, preservatives, beverages, inert atmosphere and fire extinguishers. It’s also used in oil recovery, supercritical solvent and in greenhouse. Carbon dioxide is analysed typically at higher levels (10 ppm – % level). CO is a toxic gas but it is used mostly used as chemical precursor. Both CO and CO2 are analysed at levels from 100 ppb to % level. Because these gases cannot be detected by FID, other detectors are required. One can also convert the CO/CO2 into methane to take advantage of FID sensitivity.

 

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