一、概述纸上层析是色层分析的一个分支,它是一种分离复杂混合物中各种成分的物理化学方法。它根据各物质分配系数和吸附力的差异作为分离的依据。它能够分离用一般分离方法不易解决的物理常数相近、性质类似的同系物、异构物等复杂混合物的分离问题,又能鉴定化合物,确定分子结构。它解决了很多过去解决不了的检验、测定问题。而且 I. Overview Paper chromatography is a branch of chromatographic analysis. It is a physical and chemical method for the separation of various components in complex mixtures. It is based on the difference between the partition coefficient and the adsorption force of each substance as the basis for separation. It can separate the separation problems of complex mixtures with similar physical constants, similar homologues, and isomers that are not easily solved by general separation methods, and can identify compounds and determine the molecular structure. It solves many inspection and measurement problems that could not be solved in the past. and