Studies on the Simultaneous Analysis of Organochlorine Pesticide Residues by Gas-Liquid Chromatography (I). Solvent Extraction and Cleanup of Pesticides

기체-액체 크로마토그래피에 의한 잔류 유기염소제 농약들의 동시 분석에 관한 연구 (제1보). 농약의 용매추출 및 불순물 제거

  • Taek-Jae Kim (Chemical Analysis Lab., Korea Advanced Institute of Science and Technology) ;
  • Song-Ja Park (Chemical Analysis Lab., Korea Advanced Institute of Science and Technology) ;
  • Young-Sang Kim (Department of Chemistry, Korea University)
  • 김택제 (한국과학기술원 화학분석실) ;
  • 박송자 (한국과학기술원 화학분석실) ;
  • 김영상 (고려대학교 문리대학 화학과)
  • Published : 1985.10.20

Abstract

The solvent extraction and cleanup processes for the simultaneous gas-liquid cliromatographic determination of 16 kinds of organochlorine pesticide residues were investigated. The pesticides were extracted out from-various crops with the aqueous acetone solution acidified (pH < 1.5) by adding conc. $H_3PO_4$. Most of the pesticides were partitioned from the solution with petroleum ether. Evaporated the extracting solvent, the residues were dissolved in ethylether-petroleum ether (6 : 94) eluent and eluted through the Florisil column activated at 650$^{\circ}$C for 2.5hrs. The extraction efficiency was over 94% and impurities were effectively removed by the column chromatography.

Keywords

References

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