Development of the analytical method for pesticide residues in crops by using gas chromatograph / solvent free solid injector (GC / SFSI)

무용매 고체 시료 주입기(SFSI)를 이용한 작물 중 잔류농약의 기체크로마토그래피 분석법 개발

  • Kim, M.R. (Institute of Agricultural Science and Technology, College of Agriculture and Life Science, Chonnam National University) ;
  • Lee, Y. (Institute of Agricultural Science and Technology, College of Agriculture and Life Science, Chonnam National University) ;
  • Park, B.J. (Hazardous Substances Division, NIAST, RDA) ;
  • Choi, J.H. (Hazardous Substances Division, NIAST, RDA) ;
  • Kim, I.S. (Institute of Agricultural Science and Technology, College of Agriculture and Life Science, Chonnam National University) ;
  • Shim, J.H. (Institute of Agricultural Science and Technology, College of Agriculture and Life Science, Chonnam National University)
  • 김미라 (전남대학교 농업생명과학대학 농업과학기술연구소) ;
  • 이연 (전남대학교 농업생명과학대학 농업과학기술연구소) ;
  • 박병준 (농업과학기술원 유해물질과) ;
  • 최주현 (농업과학기술원 유해물질과) ;
  • 김인선 (전남대학교 농업생명과학대학 농업과학기술연구소) ;
  • 심재한 (전남대학교 농업생명과학대학 농업과학기술연구소)
  • Published : 2005.09.30

Abstract

This experiment was carried out to develop the fast and simple method for pesticide residue analysis by using solvent free solid injector (SFSI) and to validate the efficiency of the method developed for the residue analysis of the endocrine disruptor-like pesticides such as endosulfan, metribuzin, trifluralin and vinclozolin. The samples after freeze drying were sealed in glass capillary tubes and then introduced into the heated injector of gas chromatogaphy. The required pre-heating times were 1 min for endosulfan and trifluralin, 5 min for vinclozolin, and 10 min for metribuzin. The detection limits of endosulfan in chinese cabbages, metribuzin in lettuces, trifluralin in spinachs and vinclozolin in hot peppers were 0.05, 0.1, 0.05 and 0.05 ng, respectively and their recoveries were ranged from 74%, $98{\sim}107%$, $86{\sim}95%$ and $94{\sim}95%$, respectively. The detected level of metribuzine residue in field lettuce samples by using the SFSI was 0.6 ng/mg.

SFSI (Solvent free solid injector)를 이용하여 추출과 정제과정이 필요없는 신속한 농약잔류분석법을 개발하고, 이 분석법의 실효성 여부를 확인하고자 내분비계장애추정농약으로 알려진 endosulfan, metribuzin, trifluralin, 그리고 vinclozolin의 작물 중 잔류양상을 분석하였다. SFSI에 주입된 시료는 동결건조 후 사용하였으며, SFSI에서 시료의 충분한 기화를 위한 pre-heating time을 조사한 결과 endosulfan과 trifluralin은 1 분, metribuzin은 10 분, vinclozolin은 5 분이었다. 또한 농약들의 최소검출량은 endosulfan, metribuzin, trifluralin 그리고 vinclozolin에서 각각 0.05, 0.1, 0.05, 0.05 ng이었다. 분석대상농약의 작물별 회수율은 배추 중 endosulfan은 74%, 상추 중 metribuzin은 $98{\sim}107%$, 시금치 중 trifluralin은 $86{\sim}95%$, 그리고 고추 중 vinclozolin은 $94{\sim}95%$이었다. 현장시료에 적용해 본 결과 상추에서 metribuzin이 0.6 ng/mg 수준으로 검출되었다.

Keywords

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