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Detectors  Characteristics  Detector   105         Consequently,   cases.   some   in  solution  satisfactory   a  signal—not  resulting   be   to   are   they   if  volumes   small   very   have   must  detectors  concentration   with   used   be   also   may   gas  Make-up   GC.  capillary   for  successfully   used   signal.   the  decreasing   of   risk   the   at   but   them,   Universal   vs.  Selective   that  analytes   of  percentage





                0.5mL/min             awe        (a)  detector:   Concepts   and   Wiley  of  John   comparison   for   mass   requires   internal   However,   the   and   volume   cell   be   could   badly   be   since   40,  width,   column   of  volume   were  volume   and   time   one   situation  should   not  possible   sample   mass   for   latter   the   In   as  concentration




          rate                                   of   types   courtesy   better   of   units   types   their   occurs   the   sample   would   requirements,   base   (the   capillary   a   detector   at   it   this   is   this   the  sweep   helpful
          Flow                 (a)            (b)   two   Chromatography:   the   the   detector   when   minimized.   detection   Suppose   peak   a   represents   in   for   When   to   be   detectors.   the
                                                 the   Reproduced   has       entire   volume   units   from   the   contained   will
                                                 for        units;   between   concentration.   optimized   thereby   which   the   resulting   cell   peak   which   If   detector   4L.   effluent   lowering
                mL/min                           sizes  peak   M.,   J.   91.   p.   different   which   is   is   in   importance.   that   of  the   of  ideal   volume   narrow   mL/min.   be   ideal   say   2   remedy   concentration



                                                 on              comparisons   and   detectors   volume   large   shape   An   volume,
                1                                  Miller,   1987,   quantity          in   second,   1   could   column   This   sample,
                                                 rate   flow   From  rate.   York,   New   signals   have   detectable   rate   flow   all   broadening   a   cell   has  special   so   is   The   made   be   expressed   A  units).   as   1   of   rate   entire   peak   broad.   smaller   the   to   quickly.   for   so   less   dilutes   the
                                      rate

           Detector   type   Concentration   flow   Mass   Effect   of   flow   mass   Inc.,  Sons,   &   their   valid  second,   the   of   of  Operation   band   since   have   volume   detector   volume.   distorted.   Estimates   can   be   can   peak   mL   in   is   small   as   flow   a   at   the   very   be   added   be   more   but   gas


    104                                          7.1.   Fig.   (6)   and   Wiley   because   minimum   And   cation   small,   detectors   that   of   tration   cell   one   and   of   a   x-axis   width   a   wL)   (17   larger,   or   would   significantly   can   gas   detector   detectors   make-up
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