关键词: 农药残留;定性;新技术;Massworks

Abstract:

MassWorks calibrates the mass position and the mass spectral peak shape function, is a key factor for chieving high mass accuracy. When applied to the pesticide raw mass spectral date that acquired on the GC/MS system, we can achieve the high mass accuracy on unit mass spectrometers, the mass error is less than 10 mDa. Furthermore, the list of possible formulas can be further refined and greatly shortened through the Calibrated Line-shape Isotope Profile Search (CLIPS that is available in MassWorks), so we can exact identify the target and its fragments molecular formula. The new methed can provide accurate mass and exact identify pesticide residues on unit mass resolution mass spectrometers such GC/MS.

Key words: pesticide residues, accurate identify, new technology, Massworks