一、概述分离技术是分析化学领域中的一个重要方面。在分析测定混合物中某组份时,经常要应用某些分离技术,将干扰组份与欲测组份分离,使分析测定能顺利进行并得到可靠的结果。如气液色谱法获得迅速发展的一个重要原因就是这种方法分离能力强、分离过程和分析测定紧密结合在一起联机进行。分离的理想情况就是将一个含m 个组份的混合物完全分离成m 个纯组份,并要求回收率和纯度都很高,但这在理论上和实践上都是不 I. Overview Separation technology is an important aspect of analytical chemistry. In the analysis and determination of a component in a mixture, it is often necessary to apply some separation techniques to separate the interfering component from the component to be detected, so that the analysis can be carried out smoothly and reliable results can be obtained. An important reason for the rapid development of gas-liquid chromatography, for example, is that this method has strong separation capabilities and the on-line separation process and analysis are closely linked. The ideal case for separation is the complete separation of a mixture of m components into m pure components with high recoveries and purity requirements, both theoretically and practically not