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기체크로마토그래피 질량분석기

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Gas Chromatograph/Mass Selective Detector

  • 모델명 7890A GC/5975C MSD
  • 제조사 Agilent Technologies
  • 장비용도 시험
  • 장비구분 화합물전처리/분석장비 > 질량분석장비 > 기체크로마토그래피질량분석기

상세정보

구축일자 2010-04-21
납품업체 Agilent Technologies
위치 광주광역시 북구 첨단과기로 123 (오룡동) 1 광주과학기술원 환경공학동 F2 217
구성및성능 구성및성능
The 5975 Series MSD
The 5975 Series MSD is a stand-alone capillary GC detector for use with theAgilent Series Gas Chromatograph (Table 3). The MSD features:Local Control Panel (LCP) for locally monitoring and operating the MSDOne of three different high vacuum pumpsRotary vane foreline pumpIndependently MSD heated electron-ionization ion sourceIndependently MSD heated hyperbolic quadrupole mass filterHigh-energy dynode (HED) electron multiplier detectorIndependently GC heated GC/MSD interfaceChemical ionization (EI/PCI/NCI) modes availableThe 5975 Series MSDThe 5975 Series MSD is a stand-alone capillary GC detector for use with theAgilent Series Gas Chromatograph (Table 3). The MSD features:Local Control Panel (LCP) for locally monitoring and operating the MSDOne of three different high vacuum pumpsRotary vane foreline pumpIndependently MSD heated electron-ionization ion sourceIndependently MSD heated hyperbolic quadrupole mass filterHigh-energy dynode (HED) electron multiplier detectorIndependently GC heated GC/MSD interfaceChemical ionization (EI/PCI/NCI) modes available
장비안내 특징
Principles of GC/MS in BriefTypically liquid samples are sealed into sample vials and placed in an autosampler.A small volume (usually 1 L) is injected into the GC. The sample components arevaporized in a stream of helium carrier gas and swept through the column. They arephysically separated in the column and emerge at different retention times. Samplepeaks from the GC are introduced into a vacuum chamber where the sample moleculesare ionized using an appropriate ionization mode see Figures 1 and 2. The ionsproduced are accelerated through a mass filter where they are sorted according totheir mass-to-charge ratio. The abundance of ions at each mass over a given mass rangeis measured with a suitable detector. Abundance is plotted against the mass of thefragments to give the mass spectrum. Each compound has a unique spectrum thatserves as a fingerprint for that compound. This is the basis for compound identification.The abundance of ions measured in a spectrum is directly proportional to the amountof compound present. This is the basis of quantitative measurements.

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