IN-STREAM SPECTROSCOPIC ELEMENTAL ANALYSIS OF PARTICLES BEING CONDUCTED WITHIN A GASEOUS STREAM

摘要

A particle presentation apparatus (10) for presenting particles beingconducted within a gaseous stream (16) for in-stream spectroscopic elementalanalysis (14) includes a particle blending section for homogenizing thedistribution particles of significantly different sizes received within agaseous stream of randomly distributed particles; and a particle samplingsection (10) including a window (24) that is adapted for passing excitationbeam, such as a laser beam (12), and photon emissions, and a conduit (15) forconducting the homogenized stream of particles pass the window (24) so that aparticle excitation beam passing through the window (24) can pass into thestream of homogenized particles (16). The apparatus may be used in combinationwith a drilling machine, wherein the particle blending section is coupled toan outlet pipe (15) of the drilling machine for receiving a said gaseousstream (16) of randomly distributed articles that are expelled from a drillhole.