【摘要】 采用了高效液相色谱-质谱法同时测定蔬菜和水果中杀线威、涕灭威残留量。采用电喷雾正离子模式离子化,在质谱图中,[M+Na]+强度最大,定量测定使用多离子监测模式m/z:242→72,213→116。杀线威、涕灭威的检测限分别为0.4 ng、0.1 ng;方法的回收率为85.8%~92.7%。方法的灵敏度高,选择性好,不需要特殊的净化,缩短了整个样品的分析时间,用于蔬菜和水果中的灭多威、涕灭威的测定,获得满意的效果。更多还原

【Abstract】 A liquid chromatographic method,with electrospray ionization tandem mass spectrometry(LC-ESI-MS/MS),was developed for determining of oxamyl and aldicarb in fruits and vegetables.The most prominent ions in ESI-MS spectra were ~+,The mass spectrometer was operated in the positive mode using multiple reaction monitoring(m/z:242→72,213→116) for qualitative and quantitative analysis of these compounds at the same time.The limits of detections(LOD) of oxamyl and aldicarb were 0.4ng and 0.1ng;and average recoveries ranged from 85.8%~92.7%.The advantages of the method are simple operation,less organic solvent consumption,and shorter operation time without further purification.The method can be used to detect the residues in vegetables and fruits with satisfactory results.更多还原