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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,
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