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如何判断化合物的出峰顺序

更新时间: 2020-07-01 00:00:00     

1、 熔点高的出峰时间长,即在后面出峰,比如甲醇和甲苯,甲苯沸点高出峰在后;

2、分子量大的出峰晚,与熔沸点有关系;

3、 物质的极性大小有关,普通柱子极性大的出峰晚,极性小的出峰早。

如果是特殊的柱子,有可能颠倒出峰。

关键词: 如何 判断 化合物 顺序

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