A high-performance liquid chromatography-electrospray tandem quadrupole mass spectrometry with linear trap detection method for the quantify and determination of a lot of pesticide residues in vegetable is described. ...A high-performance liquid chromatography-electrospray tandem quadrupole mass spectrometry with linear trap detection method for the quantify and determination of a lot of pesticide residues in vegetable is described. The pesticide were extracted from more vegetable(such as new ginger,garlic,shallot) with acetonitrile and the extract purified by SPE(solid phase extract). To set up EPI(enhance product ion) MS library.LC-MS/MS limit of detection (LOD) based on a signal/noise ratio of 3,was estimated to be 1 μg/kg for all pesticides. The overall average recovery in twenty-five compounds spiked vegetable was 70%-115%. LC-MS/MS-QTRAP has shown itself to be a senitive,selective and rapid method and was successfully used for the quantify and confirmation analysis of more pesticides in more difference vegetable samples for regulatory purposes.展开更多
文摘A high-performance liquid chromatography-electrospray tandem quadrupole mass spectrometry with linear trap detection method for the quantify and determination of a lot of pesticide residues in vegetable is described. The pesticide were extracted from more vegetable(such as new ginger,garlic,shallot) with acetonitrile and the extract purified by SPE(solid phase extract). To set up EPI(enhance product ion) MS library.LC-MS/MS limit of detection (LOD) based on a signal/noise ratio of 3,was estimated to be 1 μg/kg for all pesticides. The overall average recovery in twenty-five compounds spiked vegetable was 70%-115%. LC-MS/MS-QTRAP has shown itself to be a senitive,selective and rapid method and was successfully used for the quantify and confirmation analysis of more pesticides in more difference vegetable samples for regulatory purposes.
