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Establishment of Analytical Method for Pencycuron in Representative Agricultural Commodities by High-Performance Liquid Chromatography

대표 농산물 중 살균제 Pencycuron의 HPLC 정밀 잔류분석법 개발

  • Lee, Hyeri (Geum River Environment Research Center, National Institute of Environmental Research) ;
  • Choi, Hoon (Department of Bio-Environmental Chemistry, Wonkwang University) ;
  • Kim, Byung-Joon (Department of Agricultural Biotechnology, Seoul National University) ;
  • Kim, Eunhye (Department of Agricultural Biotechnology, Seoul National University) ;
  • Kim, Su-Hee (Department of Agricultural Biotechnology, Seoul National University) ;
  • Lee, Jin-Beom (Department of Agricultural Biotechnology, Seoul National University) ;
  • Lee, Young Deuk (Division of Life and Environmental Science, Daegu University) ;
  • Kim, Jeong-Han (Department of Agricultural Biotechnology, Seoul National University)
  • 이혜리 (국립환경과학원 금강물환경연구소) ;
  • 최훈 (원광대학교 생물환경화학과) ;
  • 김병준 (서울대학교 농생명공학부) ;
  • 김은혜 (서울대학교 농생명공학부) ;
  • 김수희 (서울대학교 농생명공학부) ;
  • 이진범 (서울대학교 농생명공학부) ;
  • 이영득 (대구대학교 생명환경학부) ;
  • 김정한 (서울대학교 농생명공학부)
  • Received : 2017.03.07
  • Accepted : 2017.03.21
  • Published : 2017.03.31

Abstract

The single residue analytical method was developed for determining fungicide pencycuron residues in various agricultural commodities with high-performance liquid chromatography (HPLC). Pencycuron residue was extracted with acetone from representative crops such as Korean cabbage, apple, brown rice and green pepper. After ethyl acetate/n-hexane partition and subsequent clean-up with silica gel chromatography, pencycuron residue was quantified by reversed phase HPLC with UV detection at 240 nm. The suspected residue of pencycuron was confirmed using selected-ion monitoring (SIM) LC/mass spectrometry (MS). Instrumental limit of quantitation (ILOQ) and method LOQ (MLOQ) were set at 2 ng and 0.02 mg/kg, respectively. Overall recoveries of pencycuron from different crop samples fortified at three levels (MLOQ, 10MLOQ, 100MLOQ) were 72~108%. This proposed method could be useful as official analytical method for quantification of pencycuron residues in agricultural commodities.

대표 농작물 중 살균제 pencycuron의 잔류량을 정밀하게 분석할 수 있는 단성분 분석법을 개발하였다. 대표 농작물로 배추, 사과, 현미, 고추를 선정하였으며, 정밀분석을 위해 고성능 액체크로마토그래피를 사용하였다. 농작물 시료 중 pencycuron 잔류분을 acetone을 이용하여 진탕 추출하고 에틸아세테이트/헥산을 이용한 액-액 분배법과 silica 크로마토그래피법을 통해 정제하였다. 역상 액체크로마토그래피를 이용해 UV 240 nm 파장에서 pencycuron를 정량분석하였으며, 질량분석기를 통해 잔류분을 확인하였다. 본 분석법을 통한 pencycuron의 기기정량한계는 2 ng으로 분석정량한계는 0.02 mg/kg이었다. 표준용액을 3수준(분석정량한계${\times}1$, ${\times}10$, ${\times}100$), 3반복으로 무처리 시료에 첨가하고 본 분석법의 회수율을 산출한 결과 72~108%이었다. 따라서, 본 분석법은 농산물 중 pencycuron 잔류분석을 위한 공전시험법으로써 분석개발기준을 충족하였다.

Keywords

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