液相流动相可以将盐酸换成乙酸铵吗

2025-04-07 03:00:39
推荐回答(2个)
回答1:

可以,换之前,用少量水,最好是乙酸铵涮涮你的过滤头,然后放进你的乙酸铵里,开泵冲管路。乙酸铵本来就是缓冲盐,使用的时候还经常用乙酸调节PH值呢,个别情况也有用盐酸调的。你这样的操作不存在一些“冲突”。乙酸铵是属于可挥发性缓冲盐,很常用的。当然用过之后,需要及时冲洗系统,其实只要编个方法,跑一针就可以冲洗。

回答2:

HPLC中常用的缓冲盐就是醋酸铵或者磷酸盐等,无机酸一般很少用。但是用什么还是要取决于待分析物的性质。在使用缓冲盐后要确保将柱子中盐冲洗干净后再用有机相保存,不然有机盐会结晶出来,对柱子造成不可逆的损伤。

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