气相色谱法测定空气中非甲烷总烃与一氧化碳、甲烷、二氧化碳的改进河南省职业病防治研究所（郑州４５００５２）孙文鉴马军营田崇彬空气中非甲烷总烃和一氧化碳、二氧化碳含量的测定常需要两台仪器或更换色谱柱分别测定［１，２］，甚至需要分别采样，误时费工。本方法用... Determination of Non-Methane Total Hydrocarbons, Carbon Monoxide, Methane and Carbon Dioxide in Air by Gas Chromatography Henan Institute of Occupational Disease Prevention, Zhengzhou 450052, China Sun Wenjian Ma Jun Ying Tian Chongbin The determination of total non-methane hydrocarbons, carbon monoxide and carbon dioxide in the air often requires two instruments Or change the column were measured [1,2], or even need to separate samples, time-consuming work. This method uses ...