前言液相色谱法的分离条件是不苛刻的,可以在广泛的范围内选取流动相溶剂,所以有用分离原理不同的种种方法即能将不挥发物质,不稳定物质,有生理活性的物质等等在保持原形的条件下面达到分离的优点,其应用范围极为广泛。但是,直到最近,与气相色谱法相比,它又有需要较长分离时间的缺点,这是因为在液体中扩散较之在气体中扩散显著缓慢,若提 Preface Liquid chromatography separation conditions are not harsh, you can choose a wide range of mobile phase solvents, so the separation of useful principles of different methods that can be non-volatile substances, unstable substances, physiologically active substances and so on Under the condition of maintaining the original shape to achieve the advantages of separation, its wide range of applications. However, until recently, it had the disadvantage of requiring a longer separation time than gas chromatography due to the markedly slower diffusion in the liquid than in the gas,