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학술발표회초록보기

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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 C18 modified silica monolith particles of high chromatographic separation efficiency

등록일
2014년 8월 27일 13시 38분 51초
접수번호
0428
발표코드
ANAL.P-511 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
분석화학
저자 및
공동저자
AliAshraf, 정원조*
인하대학교 화학과, Korea
Partially sub-2um porous monolithic silica particles have been prepared by sol gel process with controlled multi-step heating followed by grinding and calcination. The production scale has been increased four times than our previous work. These particles were subject to C18 modification (chlorodimethyl octadecylsilane) in anhydrous toluene under reflux followed by end capping with HMDS (hexamethyl disilazane) and TMCS (trimethyl chlorosilane). The resultant phase was washed, filtered, dried and packed in a micro-column (1.0 mm ID and 300 mm length). The optimized mobile phase was found to be 60/40 (v/v) acetonitrile/ water containing 0.1% TFA at a flow rate of 25?L/min. The column efficiencies as high as 123,000 N/m were achieved for separation of benzene and its derivatives in HPLC. The separation efficiency of this stationary phase (C-18 bonded partially sub-2um porous monolithic silica particles) was better than that of commercial C-18 bonded silica particles.

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