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naixineasy

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[交流] 【求助】固相萃取 固定相流失

我做固相萃取用氧化铝做固定相,20UM的筛板,100-200目的氧化铝。

用溶剂(乙醇)冲柱子的时候,会有氧化铝透过筛板下来,影响我的萃取效果。

请问各位有什么好的解决办法啊?

买不到更大颗粒的氧化铝,以前一直这么用,忽然有一天这种氧化铝的质量就不好了。

谢谢各位了!!
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