title: [Determination of 213 pesticide residues in milk and milk power by gas chromatography-triple quadrupole tandem mass spectrometry].
abstract: On the basis of the optimization of solid phase extraction adsorbent, eluting solvent types and amounts, a gas chromatography-triple quadrupole tandem mass spectrometry (GC-MS/MS) method was established for the determination of 213 pesticide residues in milk and milk power. The samples were extracted by acetonitrile, cleaned-up with an ENVI-Carb/NH2 solid-phase extractant, and determined by GC-MS/MS using external standard method. The linear ranges were from 10 to 1 000 μg/L for 197 pesticides, from 50 to 1 000 μg/L for the other 16 pesticides with the correlation coefficients higher than 0.99. The limits of detection (LODs, S/N = 3) varied over the range of 0.03 to 7.59 μg/kg, and limits of quantification (LOQs, S/N = 10) ranged from 0.10 to 21.94 μg/kg. The average recoveries in different matrices were in the range of 66.9% - 120.1% with the relative standard deviations (RSDs) of 1.23% - 17.6%. This method is simple, rapid, sensitive and reliable for meeting the requirements for the simultaneous identification and quantification of the multi-residues in milk and milk power.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Lianfeng
authors.initials: L
authors.lastname: Ai
authors.forename: Yusong
authors.initials: Y
authors.lastname: Ma
authors.forename: Haichao
authors.initials: H
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Meng
authors.initials: M
authors.lastname: Yu
mesh_terms: D000818:Animals; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D008892:Milk / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis*; D011208:Powders / Q000032:analysis; D053719:Tandem Mass Spectrometry
chemical_list: D010573:Pesticide Residues; D011208:Powders