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  • 02월 22일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Double-Stage Membrane Interface for Sample Introduction into a Miniature Time-of-Flight Mass Spectrometer

등록일
2008년 2월 14일 15시 14분 31초
접수번호
1407
발표코드
29P97포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅴ>
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
장유미, 김진수, 정광우
원광대학교 화학과,
The benefits of on-site analysis of environmental pollutants are well known, with such techniques increasing sample throughput and reducing the overall cost of pollution level monitoring. Characterization of double-stage membrane inlet have been performed using a portable time-of-flight mass spectrometer (TOFMS). Temporal evolution of volatile organic compounds (VOCs) through 127 ㎛ thick polydimethylsiloxane (PDMS) membranes were measured by monitoring the ion signal after a step change in the sample concentration. The detection limits for VOCs were found to be in the range of low ppb by volume, with linear dynamic ranges greater than three orders of magnitude. Present results suggest that the membrane introduction/TOFMS will be useful for a wide range of field applications, particularly for real-time environmental monitoring.

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