Gas Chromatographic Performances for Simultaneous Determination of Multi-pesticide Residues and Extraction of Pesticides with Three Partition Solvents

잔류농약 다성분 동시분석을 위한 기체 크로마토그래피 분석성능과 3종 분배용매에 의한 농약추출

  • Kim, Chan-Sub (Department of Agro-food Safety, National Academy of Agriculture Science, Rural Development Administration) ;
  • Kim, Jin-Bae (Department of Agro-food Safety, National Academy of Agriculture Science, Rural Development Administration) ;
  • Im, Geon-Jae (Department of Agro-food Safety, National Academy of Agriculture Science, Rural Development Administration) ;
  • Park, Hyun-Ju (Agro-materials Management Division, Rural Development Administration) ;
  • Lee, Young-Deuk (School of Life and Environmental Science, Daegu University)
  • 김찬섭 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 김진배 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 임건재 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 박현주 (농촌진흥청 농자재관리과) ;
  • 이영득 (대구대학교 생명환경학부)
  • Published : 2009.09.30

Abstract

In order to develop the simultaneous analytical method for pesticide residues which ones in soil are rapidly and inexpensively measured by, many analytical methods for individual pesticide residue and several methods for multi-pesticide residues in agricultural commodities and food were reviewed. Various gas chromatographic conditions and pre-treatment procedures were intensively investigated and modified. And then new optimum procedure was established and its proficiency was validated. The response on detectors of simultaneous determination of 180 pesticides out of pesticides used in Korea was tested. The number of pesticides that their limits of detection (LOD) equal or lower than $0.05\;mg\;kg^{-1}$ were 137 pesticides on ECD, 170 pesticides on NPD and 179 pesticides on ECD/NPD integrated. The retention times of most pesticides ranged appropriately between 10 minutes and 40 minutes in the proposed chromatographic conditions. But about 90 pesticides eluded between 20 minutes and 30 minutes and so they were not resolved enough. In partition with dichloromethane, ethyl acetate/hexane (1:1) and ethyl acetate, number of pesticides whose extraction efficiency ranged from 70% to 120%, were 163, 154 and 147, respectively.

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