The Extraction and Derivatization of Organotins in Water Sample by Gas Chromatograph/Mass Spectrometer

기체크로마토그래프/질량분석기에 의한 물시료 중 Organotin의 추출 및 유도체 반응에 관한 연구

  • Hong, Jee-Eun (Bioanalysis & Biotransformation Research Center, Korea Institute of Science and Technology) ;
  • Lee, Kang-Jin (Bioanalysis & Biotransformation Research Center, Korea Institute of Science and Technology) ;
  • Pyo, Hee Soo (Bioanalysis & Biotransformation Research Center, Korea Institute of Science and Technology) ;
  • Park, Song-Ja (Bioanalysis & Biotransformation Research Center, Korea Institute of Science and Technology) ;
  • Lee, Won (Department of Chemistry, Kyunghee University)
  • 홍지은 (한국과학기술연구원 생체대사연구센터) ;
  • 이강진 (한국과학기술연구원 생체대사연구센터) ;
  • 표희수 (한국과학기술연구원 생체대사연구센터) ;
  • 박송자 (한국과학기술연구원 생체대사연구센터) ;
  • 이원 (경희대학교 화학과)
  • Received : 2000.05.03
  • Published : 2000.10.25

Abstract

A method is described for the determination of organotins in water samples by GC/MS. Optimized derivatization methods for ethylation and hydrogenation of organotins were surveyed according to various reaction conditions such as time, pH and concentration of reagents. The organotins were extracted with n-hexane in presence of 0.1% tropolone and hydrogenated with sodium borohydride. Extraction recoveries of organotins with hydrogenation were in the range of 61-112%. After ethylation, organotins in water samples were extracted by liquid-liquid extraction (LLE) and solid-phase extraction (SPE). Using LLE, extraction recoveries were in the range of 74-113%. The recoveries ranged from 61-97% in the case of SPE with styrene-divinylbenzene copolymers. Method detection limits of hydrogenated and ethylated organotins ranged from 0.05 to 0.5 ng/ml and from 0.02 to 0.05 ng/ml, respectively.

Keywords

organotin;LLE;SPE;derivatizations;GC/MS

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