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  • 09월 12일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제110회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Liquid-liquid-liquid extraction in digital microfluidics

등록일
2012년 9월 5일 06시 54분 27초
접수번호
1667
발표코드
ANAL.O-11 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 12시 : 55분
발표형식
구두발표
발표분야
분석화학 - Diversity of Analytical Chemistry
저자 및
공동저자
최기환, Aaron R. Wheeler1
University of Toronto, Canada, Korea
1University of Toronto, Canada, United States
We report the coupling of liquid-liquid-liquid extraction (LLLE) and digital microfluidics (DMF). LLLE is the technique of sample enrichment and purification technique using an organic membrane sandwiched between two aqueous solutions. In this work, the organic membrane was formed in a DMF device by actuating organic solvent to the a hydrophobic pillar structure. This structure stabilized the membrane position during the extraction process. Then sSample solution and acceptor solution droplets were actuated to opposite sides of the membrane. Analytes having neutralized form in the sample solution were partitioned into the organic membrane. Conversely, ionized solutes did cannot penetrate the membrane. The partitioned analytes were back-extracted and ionized into the acceptor solution to prevent repartitioning to membrane. The effects of pHs of aqueous the acceptor and donor solutions and extraction time were investigated and fluorescein was successfully extracted from the biologic fluid droplets within 60 min.

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