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  • 02월 28일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제123회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Single Bubble Microextraction Coupled with Capillary Electrophoresis

2019년 2월 8일 12시 04분 25초
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목 09시 : 24분
Analytical Chemistry - Oral Presentation of Young Analytical Chemists I
저자 및
Xamyo Noulorsaytour , Doo Soo Chung1,*
Chemistry, Seoul National University, Laos
1Division of Chemistry, Seoul National University, Korea
Headspace (HS) extraction is a technique that have been developed for analysis volatile compounds. In conventional HS extraction, analytes evaporated from a donor phase (acidic) to the headspace and can be enriched to an acceptor phase (basic). The maximum enrichment factor is given by the ratio of the donor and acceptor volumes. Thus a small acceptor volume is preferred. To solve the stability problem of the hanging drop, we recently developed HS in-tube microextraction (ITME) coupled with CE using a basic run buffer solution inside capillary as an acceptor phase. To reduce the headspace area, and increase enrichment factor enriched in more smaller headspace, here we present a new technique, single bubble microextraction (SBME) coupled with CE. It is a simple technique and easy to conduct HS extraction of a small volume sample for CE analysis. To reduce the headspace area, a small air bubble was formed at the tip of a capillary by injecting a plug of air into the capillary containing an acceptor plug and ejecting the air plug after immersing the capillary into a sample donor vial. Then, SBME-CE was performed using the acceptor plug remained in the capillary. All steps of SBME-CE were carried out automatically using a commercial CE instrument without any modification.