Determination of Organophosphorus, Organochlorine,Pyrethoid Pesticides Residues in Vegetable by Gas Chromatography with Electron Capture Detector
NIE Kun
ZHAO Jianzhuang
Abstract：QuEChERS and gas chromatography-electron capture detection (GC-ECD) methods were used to simultaneously detect 53 kinds of pesticides belonging to organophosphorus,organochlorine and pyrethroid in vegetable,to improve the detection efficiency and accuracy of pesticides residues.Samples were extracted by acetonitrile assisted with ultrasonics,and cleaned up by dispersive solid phase extraction combined with PSA and Carb.Targets were analyzed by GC-ECD and quantified using the external standard method.The detection limits and the ayerage recoveries were 0.001-0.005 mg/kg and 85.1％-102.6％ respectively,and the relative standard deviation (RSD) was between 0.9％ and 4.5％.The proposed method is characterized by simplicity,higher sensitivity and accuracy,which could meet the daily inspection work of pesticide residue in vegetable.Compared to the traditional methods,it had characteristics of energy saving and environmental protection,simple operation,cost saving and high efficiency.
Keywords：vegetablepesticidessimultaneous determinationGC-ECD
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 76-82 )