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简述色谱法的四种原理机制
更新时间: 2020-06-28 00:00:00  

1、固色谱:不同物质的吸附能力不同而分离;

2液色谱:溶解(分配)能力不同而分离;

3、离子交换色谱:离子置换能力不同而分离;

4、空间排阻色谱:色谱填料颗粒具有一定孔径,待分离物质中的大分子颗粒直径大于孔径,先出峰,小分子颗粒直径小于孔径,就会进入填料颗粒的空隙里,停留时间长,后出峰。

关键词: 简述 原理 机制

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