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Sensitive Chiral Analysis using pH junction and Sweeping between a Analyte and a Selector in Capillary Electrophoresis

등록일
2009년 8월 21일 15시 51분 36초
접수번호
1543
발표코드
35P140포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅳ>
발표형식
포스터
발표분야
분석화학
저자 및
공동저자
김정연, 최기환, 장서봉, 최정미, 정두수
서울대학교 화학부, Korea
In this report, sensitive chiral analysis based on the combination of pH junction and sweeping was performed in capillary electrophoresis. By employing the efficient stacking techniques, the sensitivity of detection could be improved and chiral analytes could be separated using a chiral selector. The zwitterionic analytes diluted in low pH buffer are concentrated at the boundary of low pH and high pH zones due to the changing of electrophoretic mobility of analytes. Then, stacked analytes were swept with 18C6H4. Since 18C6H4 was interacted differently with the enantiomers, chiral separation was achieved simultaneously. The experimental parameters such as plug length, buffer concentration, and 18C6H4 concentration were optimized. The enrichment factor was more than three orders of degree and the value of chiral resolution was 3.2.

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