上海11选5走势图

技术文章上海11选5走势图 > 技术文章 > 液相色谱柱常用的填料都有哪些
液相色谱柱常用的填料都有哪些
点击次数:2134 发布时间:2018-04-13 返回

在液相色谱分离系统中,色谱填料选择的正确与否会直接影响到专业的分离物质效果的好坏。由于液相色谱填料具有相当宽的选择范围,所以我们在购买液相色谱柱之前有必要对不同液相色谱填料进行一个简单的认识和了解。

 

*,正相色谱硅胶基质填料。正相色谱柱的固定相是由硅胶和其他具有极性官能团组成的键合相填料。其物质分离特点是极性较弱组合zui先被色谱柱冲洗出来。而且正相色谱所使用的流动相其极性要低于固定相,流动相通常使用正乙烷和二氯甲烷等。

 

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