小中大色谱峰在质谱中丢失可能原因
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对反应液进行液质定性分析产物的组成,发现色谱中某些峰在质谱总离子流图中消失了,如图所示,5.61的色谱峰在质谱中消失了,10.02的色谱峰在质谱中减弱了。
这是什么原因,出现这一情况说明了什么?
注: Experimental conditions of the HPLC-MS technique: separations were performed at 25℃on a SB-Phenyl column from Agilent using a mobile phase 80% formic acid/20% acetonitrile. Scan type was negative TOF MS. The APCI vaporizer temperature was 450 ℃.
[ 本帖最后由 sunshine059 于 2011-12-19 16:47 编辑 ]
2011-12-19 16:43
液质.jpg (21.98 KB)