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  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 Analysis of volatile organic compounds with headspace in-tube microextraction/capillary electrophoresis

2014년 8월 28일 15시 04분 27초
ANAL.P-547 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 15일 (수요일) 16:00~19:00
저자 및
조성민, 정두수*
서울대학교 화학부, Korea
Headspace (HS) extraction is a 3-phase extraction technique from a sample donor phase to a HS above the donor then from the HS to an acceptor phase. HS extraction is fit for volatile/semi-volatile compounds in a complex matrix. Recently, HS single drop microextraction (SDME) has been demonstrated using a drop of an acceptor phase hanging at the inlet tip of a capillary for the subsequent capillary electrophoresis (CE). However, it is difficult to hang a drop of very small volume in the HS of high temperature stably for a long extraction, and we introduced a novel and simple scheme of HS extraction, HS in-tube microextraction (ITME). Without hanging a drop, the liquid inside a separation capillary for CE is used as an acceptor phase. HS-ITME-CE was first demonstrated in the analysis of chlorophenols in wine. As a second application of HS-ITME, neutral organic pollutant such as BTEX (benzene, toluene, ethyl benzene, and xylene) is extracted from an aqueous sample to a surfactant solution inside a separation capillary. The extracts were then analyzed with a micellar electrokinetic chromatography mode of CE. At the optimal conditions, the sample were enriched to 350 on average.