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The united technologies of Liquid chromatography and mass spectrometry have high separation efficiency, good selectivity, high sensitivity, rapid analysis for a wide range of advantages, LC-MS analysis of unknown compounds have  the fast, precise characteristics £¬that made It Widely used in various fields expanding. In this paper, use advanced LCT Premier XE liquid chromatography - high resolution time of flight mass spectrometer of our school (Waters, USA) , for qualitative analysis of the quaternary ammonium compounds and organic silicon compounds that made in our lab , by optimizing the LC-MS conditions, summed up the law, the establishment of a limited analysis of these two compounds.
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The united technology of liquid chromatography and mass spectrometry (LC-MS) are  well known for the high separation efficiency, good selectivity, high sensitivity, and wide applications in various areas. Meanwhile, the LC-MS tis considered as a fast and accurate method for detecting unknown compounds and thus its applications are rapidly developed in related fields. In this paper, the LC-MS technology is used for guiding the qualitative analysis of the quaternary ammonium compounds and organic silicon compounds made in our lab by using the advanced LCT Premier XE liquid chromatography - high resolution time of flight mass spectrometer of our school (Waters, USA). Through the optimization procedure of the LC-MS conditions, the qualitative analysis of these two compounds are finally determined by grounds.
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