前言液滴逆流层析(Droplet CountercurrentChromatography;DCC)已被证实为一种有用的新的分离精制技术。它与以往的层析概念不完全一致,但其操作及所获得的结果不仅与以往的层析类似,而且比之具有更多的优点。逆流层析的定义是液液分配层析中不用固体而用其他方法保持固定相担体的层析,因此可以用多种方法进行逆流层析。 Introduction Droplet Countercurrent Chromatography (DCC) has proven to be a useful new separation and purification technique. It is not completely consistent with the previous concept of chromatography, but its operation and the results obtained not only have similarities with the previous ones but also have more advantages than that. Countercurrent chromatography is defined as liquid chromatography-liquid chromatography without solids and other methods to maintain the stationary phase of the chromatography, so there are a variety of methods available for reverse-phase chromatography.