作为分析化学重要分析手段之一的气相色谱技术,已在许多科学领域得到越来越广泛的应用,解决了分析化学中许多重要课题。但在实际应用中,有时还会遇到困难。问题在于样品的复杂性和样品中痕量组分的分析。世界上物质种类之多无法计算,而样品的复杂性也是难以估量的。例如有人分析烟草烟雾得到了上千个色谱峰,可是经质谱定性表明,平均每个峰又含有二个组分。对于这样的复 Gas chromatography, one of the most important analytical methods in analytical chemistry, has been used more and more widely in many fields of science and has solved many important topics in analytical chemistry. However, in practical applications, sometimes encountered difficulties. The problem is the complexity of the sample and the analysis of the trace components in the sample. The world’s species can not be calculated as many, and the complexity of the sample is unimaginable. For example, someone analyzes tobacco smoke and gets thousands of peaks, but by mass spectrometry, it shows that on average each peak contains two more components. For such complex