一、前言:近年来气体色层分析法有很大的发展,因为这种方法无论在理论上和应用上都比较简单,无需特殊复杂的仪器设备,样品量少,操作时间短,对于广泛范围内的发挥性及微发挥性物质都可进行分析,并能同时完成定性与定量分析。这种方法在国外早已普遍应用,在国内近年来也有许多研究者进行这一工作,同时在生产上和试验研究工作上也初步得到了应用。气体色层法的分离和分析,通常是根据色层柱所析出的蒸气通过某些形式的检定器测定的。一般文献中记载使用的检定器很多,如热导法、自动滴定法、体积测量法、氢焰检定法、表面电位检定法、红外线气体分析法等;国内最常使用的是体积测量法(体积色层法)及热导法两种。体积色层法虽然设备最简单,但操作慢,准确度低,实际应用上受到不少限制。热导法是较广泛应用的检定方法,通常是以组入惠斯顿电桥的两个热导池测定。热导法设备 First, the foreword: In recent years, gas chromatographic analysis has great development, because this method both in theory and application are relatively simple, without special complicated equipment, small sample size, short operation time, for a wide range Within the play and micro-play material can be analyzed, and can complete qualitative and quantitative analysis. This method has long been widely used in foreign countries. In recent years, many researchers in China have carried out this work. At the same time, they have also been initially applied in production and experimental research. Gas chromatographic separation and analysis, usually based on chromatographic column of the vapor precipitated by some of the determination of the detector. There are many calibrators used in the literature, such as thermal conductivity method, automatic titration method, volumetric measurement method, hydrogen flame test method, surface potential test method and infrared gas analysis method. The most commonly used method in China is volumetric measurement Color method) and thermal conductivity of two. Although the simplest method of volumetric chromatography, the operation is slow and the accuracy is low, which is limited by the practical application. Thermal conductivity method is a more widely used method of verification, usually measured by two thermal conductivity cells assembled into a Wheatstone bridge. Thermal conductivity method equipment