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Evaluation of QuEChERS Method for Determination of pesticide Residues Using GC/NPD and GC/ECD

GC/NPD와 GC/ECD를 이용한 잔류농약 정량 분석법으로써의 QuEChERS의 평가

  • Cho, Tae Hee (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment) ;
  • Park, Young Hye (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment) ;
  • Park, Hye Won (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment) ;
  • Hwang, Lae Hwong (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment) ;
  • Cho, In Soon (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment) ;
  • Kim, Min Jung (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment) ;
  • Kim, Hyun Jeong (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment) ;
  • Kim, Mu Sang (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment) ;
  • Chae, Young Zoo (Kangnam Agro-Fishery Products Inspection Center, Seoul Metropolitan Goverment Research Institute of Public Health and Environment)
  • 조태희 (강남농수산물검사소 서울특별시보건환경연구원) ;
  • 박영혜 (강남농수산물검사소 서울특별시보건환경연구원) ;
  • 박혜원 (강남농수산물검사소 서울특별시보건환경연구원) ;
  • 황래홍 (강남농수산물검사소 서울특별시보건환경연구원) ;
  • 조인순 (강남농수산물검사소 서울특별시보건환경연구원) ;
  • 김민정 (강남농수산물검사소 서울특별시보건환경연구원) ;
  • 김현정 (강남농수산물검사소 서울특별시보건환경연구원) ;
  • 김무상 (강남농수산물검사소 서울특별시보건환경연구원) ;
  • 채영주 (강남농수산물검사소 서울특별시보건환경연구원)
  • Received : 2012.11.22
  • Accepted : 2013.02.01
  • Published : 2013.03.31

Abstract

The modified QuEChERS method was evaluated for rapid determination of pesticide residues in spinach by gas chromatography-nitrogen phosphorous detector (NPD) and electron capture detector (ECD). Fifty GC-amenable pesticides which were most frequently detected in monitoring were selected in the current study. Matrix-matched calibration was performed. The detector response for all pesticides was linear with determination coefficients higher than 0.995. LODs for most compounds ranged between 0.001 and 0.1 ug/g, and about 90% of the compounds had LODs of less than 0.05 ug/g. LOQs ranged from 0.001 to 0.32 ug/g, which were well below the MRLs permitted for most of pesticides. In the majority of cases, the recoveries (80-120%) and relative standard deviations (RSDs) (less than 20%) were within acceptable levels except for dichlorvos, propamocarb, chlorothalonil, dichlofluanid, cyhalothrin and fenvalerate. Also, this method which is applied to routine samples showed good results when comparing with traditional multi-residue method.

Keywords

GC-ECD;GC-NPD;Pesticide residues;QuEChERS

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