- P-ISSN 1225-0163
- E-ISSN 2288-8985
- P-ISSN1225-0163
- E-ISSN2288-8985
- SCOPUS, ESCI, KCI
Article Detail
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Feasibility study of membrane interface for gas chromatograph-mass spectrometry
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2008, v.21 no.6, pp.495-501
&
(2008). Feasibility study of membrane interface for gas chromatograph-mass spectrometry. , 21(6), 495-501.
Abstract
GC-MS 의 기존 인터페이스와 새로운 인터페이스의 차이점과 유용성을 판단하기 위하여 Agilent 5973 GC-MS의 capillary direct interface를 떼어내고 GC와 질량분석기 사이에 실리콘 membrane을 장착 하여 membrane interface GC-MS의 분석 유용성을 조사하였다. 최대 4.7 mL/min 까지 헬륨 운반기체유 량을 올릴 때 질량분석기의 진공도는 거의 영향을 받지 않으며, 피이크끌림 현상이 줄어들고 머무른시간 이 줄어드는 빠른 분석을 보였다. Membrane 의 두께를 127 μm에서 75 μm으로 줄일 때 분리능이 향상 되며, membrane interface의 온도를 올릴 때 분리능과 감도가 향상되었다. 그러나 membrane interface GCMS는 질량/전하 비 73, 147에서 바탕이온이 발생하는 것과 기존의 capillary direct insertion interface보다 낮은 감도와 peak tailing에 의한 낮은 분리능의 문제점을 갖는다.
- keywords
- GC-MS, membrane interface, carrier gas flow rate, membrane thickness
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