| 摘要 |
A method is described for the quantitative measurement of traces of gas, particularly CO2 and CH4 which constitute impurities in impure inert gases such as rare gases and nitrogen, by means of the use of a known analyzer for reducing gases, which uses a bed of mercuric oxide and makes the measurement by an optical method of the mercury vapours produced which are proportional into the concentration of the impurities to be detected. The method of the present invention subjects the impure inert gas to an electric discharge which may be at a high voltage, capable of ionizing the impurities before the impure inert gas is made to pass through the bed of mercuric oxide. The device according to the invention comprises, between a gas-chromatographic separation column and the analyzer, an electrode within a passage through which flows the gas to be analyzed and in which there is an ionizing discharge. |
