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학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

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  • 02월 26일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제115회 대한화학회 학술발표회, 총회 및 기기전시회 안내 In Situ Depth Profiling of Plant Metabolites by Nanospray Desorption Ionization (nano-DESI) Mass Spectrometry

등록일
2015년 2월 25일 19시 47분 07초
접수번호
2051
발표코드
ANAL.O-51 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 11시 : 40분
발표형식
구두발표
발표분야
분석화학 - Oral Presentation of Young Analytical Chemists
저자 및
공동저자
이동건, 이광빈, 전규웅, 차상원*
한국외국어대학교 화학과, Korea
In nanospray desorption ionization (nano-DESI), one of the extractive ambient ionization methods for mass spectrometry (MS), a steady-state micro-liquid junction formed between two micro-capillaries is used for extracting and dissolving analytes directly from a sample surface at a high spatial resolution. Recently, we have developed nano-DESI MS methods for direct profiling of metabolites from plant tissues in a depth-dependent manner. In the previous study, however, physical removal of plant wax layers was necessary prior to nano-DESI MS analysis, primarily because conventional spraying solvents such as methanol and water could not penetrate the wax layer. In present study, we optimized the nano-DESI spraying solvent system which could allow us to probe metabolites beneath the wax layer without employing any physical removal process. Our results showed that a toluene-containing nano-DESI spraying solvent was the very effective solvent system in terms of spatial resolution of sampling, stability of ion signals, and plant metabolite coverage.

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