摘要
目的:构建一种同时、快速、高效的检测鸡蛋中多种农残方法。方法:将QuEChERS与UHPLC-MS/MS结合用于鸡蛋中19种农药残留量的检测。结果:所建方法的检出限(LOD)和定量限(LOQ)分别为(0.39±0.66),(1.28±2.17)μg/kg;加标回收率为79.25%~102.14%,相对标准偏差均值(RSD)为9.34%~16.72%;除恶唑菌酮外,鸡蛋中其余18种农药的线性相关系数接近0.999。所测鸡蛋中鸡蛋中19种农残检出总频率为2.82%,农残问题主要涉及辛硫磷和毒死蜱,其检出频率分别为22%,15%,浓度范围分别为2.08~729.74,0.81~46.89μg/kg。结论:所建方法准确可靠,符合相关检测要求;湖北省境内鸡蛋中农残检出频次低、安全隐患较小。
Objective:The aim is to establish a rapid,efficient and simultaneous detection method for various pesticide residues in eggs.Methods:QuEChERS combined with UHPLC-MS/MS was successfully used to detect 19 kinds of pesticide residues in eggs.Results:The limit of detection(LOD)and quantification(LOQ)of this method were(0.39±0.66)and(1.28±2.17)μg/kg,respectively.The recoveries of standard pesticides and relative standard deviations ranged from 79.25%to 102.14%and from 9.34%to 16.72%,respectively.Except for famoxadone,the correlation coefficients of linear equations for all pesticides were close to 0.999.The total frequency of 19 kinds of pesticides detected in eggs was 2.82%and the detection frequency of chlorpyrifos and phoxim were 22%and 15%,which maybe the potential safety issue for eggs.The quantity of them ranged from 2.08~729.74μg/kg and 0.81~46.89μg/kg,respectively.Conclusion:The proposed method is accurate,reliable,and meets the requirements for testing pesticides in eggs.The detection frequency of pesticides in eggs in Hubei province is low,indicating a low safety risk.
作者
黄小波
刘维平
HUANG Xiao-bo;LIU Wei-ping(Changsha Environmental Protection Vocational and Technical College,Changsha,Hunan 410004,China)
出处
《食品与机械》
北大核心
2021年第10期56-60,共5页
Food and Machinery
基金
湖南省自科基金科教联合项目(编号:2017JJ5060)。
