A gas chromatographic(GC) method based on QuEChERS extraction salt package and solid phase extraction was established for the determination of 19 pesticides residues

i.e.bifenthrin

fenpropathrin

permethrin

cypermethrin

fenvalerate

deltamethrin

dichlorvos

methamidophos

acephate

diazinon

dimethoate

pirimiphos-methyl

chlorpyrifos

fenitrothion

profenofos

fipronil

fipronil-desulfinyl

fipronil sulfide and fipronil sulfone in eggs.The sample was extractd with acetonitrile and QuEChERS extraction salt package

and then purified with GCB adsorbent and C18 SPE.The analytes were separated on an Agilent DB-1701(30 m×0.32 mm

0.25 μm) polarity capillary column

then detected by GC with FPD detector and ECD detector

and quantified by external standard method.Results showed that there were good linear relationships for 19 pesticides in their respective concentration ranges

with correlation coefficients(r2) not less than 0.999 3.The recoveries at three spiked levels of low

meddle and high ranged from 78.6% to 105%

with relative standard deviations(n=6) of 1.6%-93%.The limits of detection(LOD

S/N=3) and limits of quantitation(LOQ

S/N=10) were in the ranges of 0.138-8.33 μg/kg and 0.461-27.8 μg/kg

respectively.With the advantages of simplicity

good separation

reliability and stability

the established method could meet the requirements for determination of pesticides multi residues in eggs.