中文摘要： 本文对改良的QuEChERS法、基质固相分散和分散乙酸乙酯萃取法进行比较，选择最合适的菜蓟农药残留检测分析样本。三种方法的准确度和精密度均为0.2 mg/kg，但改良的QuEChERS法性能更佳。本文根据DG-SANTE指南对菜蓟叶和果实进行了整体的评估和验证，观察到了大多数农药的不同基质效应，且菜蓟叶比果实中的农药残留更高，但所有农药均等于或小于欧盟规定的菜蓟农药最大残留水平，该方法已经应用于商业分析。
外文摘要：Aiming to select the most suitable sample preparation for the multiresidue analysis of pesticides in globe artichoke (Cynara cardunculus L), a modified QuEChERS, a matrix solid phase dispersion and a dispersive ethyl acetate extraction were compared. Trueness and precision were determined at 0.2 mg kg(-1) for the three methods. The modified QuEChERS showed the best perf ormance. The scope of the method was enlarged to 35 GC and 63 LC amenable pesticides, its overall performance was evaluated and validated to artichoke leaves and fruits according to DG-SANTE Guidelines. Different matrix effects were observed for most of the pesticides which were higher for leaves than fruits. Difenoconazole and flutriafol suffered signal suppression in leaves extracts but showed positive matrix effects in fruits. All pesticides were analyzed at or below their Maximum Residue Levels fixed for globe artichoke by the European Union. The method was successfully applied for the analysis of commercial samples. (C) 2017 Elsevier Ltd. All rights reserved.
 
外文关键词：Globe artichoke, Pesticide residues, Multiresidue dispersive methods, GC-MS, LC-MS/MS
作者：Machado, Ignacio; Gerez, Natalia; Piston, Mariela; Heinzen, Horacio; Veronica Cesio, Maria
作者单位：Univ La Republ UdelaR, Fac Quim, DQO, Grp Anal Contaminantes Trazas Pharmacognosy & Nat, Av Gral Flores 2124,POB 1157, Montevideo 11800, Uruguay.
期刊名称：FOOD CHEMISTRY
期刊影响因子：4.052
出版年份：2017
出版刊次：7
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