Medical brain notes 35

  Spectroscopic   Methods   of   Analysis B efor e   th e   beginnin g   o f   th e   twentiet h   centur y   mos t   quantitative chemical   analyses   used   gravimetry   or   titrimetry   as   the   analytical   method. With   these   methods,   analysts   achieved   highly   accurate   results,   but   were usually   limited   to   the   analysis   of   major   and   minor   analytes.   Other methods   developed   during   this   period   extended   quantitative   analysis   to include   trace   level   analytes.   One   such   method   was   colorimetry. One   example   of   an   early   colorimetric   analysis   is   Nessler’s   method   for  ammonia, ...

  Overview of Spectroscopy The   focus   of   this   is   photon   spectroscopy,   using   ultraviolet,   visible,   and   in- frared   radiation.   Because   these   techniques   use   a   common   set   of   optical   devices   for dispersing   and   focusing   the   radiation,   they   often   are   identified   as   optical   spectros- copies.   For   convenience   we   will   usually   use   the   simpler   term   “spectroscopy”   in place   of   photon   spectroscopy   or   optical   spectroscopy;   however,   it   should   be   under- stood   that   we   are   considering   only   a   limited   part   of   a   much   broader   area ...