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학술발표회초록보기

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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 In situ handwritten document analysis by using nanospray desorption electrospray ionization (nano-DESI) mass spectrometry [우수포스터상],[동우화인켐㈜ 대학(원)생 선정 포스터상]

등록일
2014년 8월 28일 15시 33분 20초
접수번호
1105
발표코드
ANAL.P-561 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
분석화학
저자 및
공동저자
이광빈, 차상원*
한국외국어대학교 화학과, Korea
Typical ink chemical analysis of a handwritten document includes paper sampling with a micro-punch, chemical extraction, and chromatographic or mass spectrometric analysis. Recently, mass spectrometric ionization methods such as desorption electrospray ionization (DESI), electrospray-assisted laser desorption/ionization (ELDI), and matrix-assisted laser desorption/ionization (MALDI) were utilized as in situ sampling techniques and interfaced with mass spectrometry (MS). In this study, we utilized nanospray desorption electrospray ionization (nano-DESI) MS as an in situ document ink analysis platform. Nano-DESI is one of the extractive ambient ionization methods developed by Julia Laskin in 2010. Since nano-DESI utilizes steady-state micro-liquid junction formed between two capillaries for extracting analytes, this method allows us to extract ink chemicals at a high spatial resolution and also has a potential of depth-profiling. We could get characteristic chemical profiles directly from handwritings on a paper with a homebuilt nano-DESI MS platform. In addition, we also found that nano-DESI MS has a capability of obtaining depth-dependent ink chemical profiles.

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