用porapak-N为固定相,采用气固色谱的方法使甲醛—水—甲醇三组份得到了分开。用氢气为载气,热导池为检测器,以色谱柱的分离度作为分离效率的指标,研究了柱温及载气流速对分离度的影响,得到了最佳操作条件。在此基础上分别采用标准曲线法及定量因子法进行了定量。该法简单、快速,可在甲醇氧化为甲醛的研究工作中及工业生产上作为一种分析方法应用。 Using porapak-N as the stationary phase, the three components of formaldehyde-water-methanol were separated by gas chromatography. Using hydrogen as carrier gas and thermal conductivity cell as detector, the column separation was taken as an index of separation efficiency. The effects of column temperature and carrier gas flow velocity on resolution were studied. The optimum operating conditions were obtained. On the basis of this, the standard curve method and quantitative factor method were used for quantification. The method is simple and fast, and can be applied as an analytical method in the research work of methanol oxidation to formaldehyde and industrial production.