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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 30 — Oct. 20, 2003
  • pp: 6179–6183

Shooting slurries with laser-induced breakdown spectroscopy: sampling is the name of the game

Daniel Michaud, Eric Proulx, Jean-Guy Chartrand, and Louis Barrette  »View Author Affiliations


Applied Optics, Vol. 42, Issue 30, pp. 6179-6183 (2003)
http://dx.doi.org/10.1364/AO.42.006179


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Abstract

Analyses of iron ore slurries in industrial and laboratory environments showed that many physical and geometric parameters affect the stability and reproducibility of the response to laser-induced breakdown spectroscopy. A thorough reexamination of the sampling strategy led to a revised sampling layout that ensures a true representative sampling of the slurry and significantly improves the sensitivity and repeatability of the sampling method. An examination of the characteristics of slurries revealed that the mean particulate size and the concentration of solids in a slurry influence the measurement of silica, whereas the magnetite content is responsible for a matrix effect. On-line monitoring of iron ore slurries should be practicable, provided that these variables are controlled within a few percent or that some means of correction is implemented.

© 2003 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(120.1880) Instrumentation, measurement, and metrology : Detection
(300.2140) Spectroscopy : Emission

Citation
Daniel Michaud, Eric Proulx, Jean-Guy Chartrand, and Louis Barrette, "Shooting Slurries with Laser-Induced Breakdown Spectroscopy: Sampling is the Name of the Game," Appl. Opt. 42, 6179-6183 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-30-6179

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