Transcription of Understanding the Capillary GC Column
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Understanding the Capillary GC Column
Understanding the Capillary GC ColumnMark SInnottApplication EngineerThings to Is it Volatile enough to chromatograph by GC? Is it stable enough to survive vaporization? Is it a Gas or a Liquid? How are we getting the Sample Injected? What is the sample Matrix? Can we do sample clean up? Is it an established method?--EPA, ASTM, USP What do we Know about the analytes? What else MAY be present in the sample?Group/Presentation TitleAgilent RestrictedPage 2 Group/Presentation TitleAgilent RestrictedPage 3 Capillary Column TYPESL iquid PhaseCarrier GasPorous Layer Open Tube (PLOT)Wall Coated Open Tube (WCOT)Solid ParticlesCarrier GasGroup/Presentation TitleAgilent RestrictedPage 6 STATIONARY PHASE POLYMERSSiRROSiRROSiRRSiRROnmOSiRRnSilox aneSiarylene backboneR=methyl, phenyl, cyanopropyl, trifluoropropylOHCH2CH2O nPolyethylene Gl
CAPILLARY COLUMN TYPES Liquid Phase Carrier Gas Porous Layer Open Tube (PLOT) Wall Coated Open Tube (WCOT) Solid Particles Carrier Gas. Group/Presentation Title ... Vapor pressure: good approximation Boiling point: poor approximation. Group/Presentation Title Agilent Restricted Page 35 Selectivity
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