The determination of impurities in carbon dioxide by gas chromatography, with special reference to coolant gas for nuclear reactors

It has been shown that, with a 25-ml sample, hydrogen, argon, oxygen, nitrogen, methane, and carbon monoxide present at levels as low as 5 to 20 p.p.m. in carbon dioxide can be determined by a gas-chromatographic method. Special features of the technique are the use of a molecular sieve as the solid adsorbent, the high speed of analysis and the use of a katharometer of high sensitivity. (auth)