electron_impact_ionization_ms

1.It is unfavorable to study MS of aminoglycosides using electron impact ionization.
使用电子轰击离子化方法研究氨基糖甙类是不理想的。
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2.Mass spectra (MS) of cholesterol esters and halides were obtained by means of Electron Impact (EI), Field Desorption (FD) and Chemical Ionization (CI).
研究了胆甾醇酯类和胆甾醇卤代物的电子轰击电离（EI）、场解吸电离（FD）、化学电离（CI）的质谱。
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3.Methods: Volatile oil was separated by solvent extraction and analysed by gas chromatography coupled with electron impact ionization-mass spectrometry (GC-MS).
方法：采用溶剂浸渍方法提取冬凌草中的挥发性成分，用GC - MS方法对冬凌草挥发油的化学成分进行分析。
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