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shirleyppy

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[求助] 流动相 对硝基苯乙胺盐酸盐

现在 对硝基乙酰苯乙胺为原料合成对硝基苯乙胺盐酸盐(产物),什么流动相能讲二者分开?
实验了甲醇水65:35,(水中加三乙胺防产物拖尾),甲醇和水的基线一直都不稳,用乙腈和水65:35基线也不稳还有倒峰,并且产物和原料分不开
液相新买的柱子为新的碳18,求流动相?或者直接把溶液配好,只用一个泵能避免基线不稳吗?
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