Page 168 - Basic Gas Chromatography
P. 168
Atmospheric
information
Special 155 Topics GC-MS MS i Interfaces Gc GC unique. not Vacuum High > Separator Jet A. o> (108 Torr) Columns) (Packed Pressure Heated d ta provides Direct Capillary B. (200-300°C) Heated (structure, quantitati MS. to GC of Coupling 10.2. Fig. ™ mono the in have methods other of variety a chromatograph, a with use
are most it but compounds their as found follows. mass small to source. solutions the for
they the of one sample, of unknown well as system. be can topic the resolution its of small very a used be ionization or liquids, means <—S spectrometer.
to identity peaks,” hand is micrograms of weight), GC a GC-MS to low Because of can bulb the into of common a is MASS ANALYZERS mass a of
well-defi other identification molecular to about introduction typical a GC. introduction gas large introduction system VACUUM SPECTRUM Schematic
a the only coupled of with MS. the A pinhole | m/z
of used be on requires and information an but schematic used bench-top for small easy interlock — MASS | | 10.1. Fig.
characteristic cannot spectroscopy It qualitative composition, easily is it complete [1-5], a is commonly as a allows of sources. a through allow vacuum
are alone Mass detectors. the both elemental addition, More listed Instrumentation 10.1 type to Inlets sample inlet a variety would a SAMPLE INLET v IONIZATION SOURCE
154 they data rich for In graphs Figure the referred Sample A from samples septum finally,