Louis St-Onge

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Many industrial activities require adequate and timely evaluation of material composition. Laser-induced breakdown spectroscopy (LIBS) has, in recent years, shown a great potential for rapid qualitative and quantitative chemical analysis of various materials. In this paper, we will illustrate the usefulness of the LIBS technique for elemental analysis at(More)
The purpose of this work was to demonstrate the possibilities offered by laser-induced breakdown spectroscopy (LIBS) for the direct and rapid analysis of pharmaceutical liquid formulations. Sodium chloride in solution was chosen as a model compound. A pulsed Nd:YAG laser (1064 nm) was used to produce a gaseous plasma from the liquid sample. The ensuing(More)
PURPOSE Laser-induced breakdown spectroscopy (LIBS) was evaluated for its potential as a process analytical tool for the rapid determination of magnesium stearate (MgSt) distribution within and between tablets as well as between batches in a typical manufacturing run, and for the comparison of direct-compression and roller-compaction processes. METHODS(More)
In this paper the use of laser-induced plasma spectrometry has been shown to occur in reduced-pressure laser-induced plasmas from brass (Cu–Zn) samples, the vapour pressures of (LIPS) for the quantitative analysis of Al, Cu, Fe, Pb and Sn components in solid zinc alloys is evaluated. Laser-induced Cu and Zn being di erent by several orders of magnitude.6 As(More)
Laser-induced breakdown spectroscopy (LIBS) is widely dependent on the conditions of its implementation in terms of laser characteristics (wavelength, energy, and pulse duration), focusing conditions, and surrounding gas. In this study two wavelengths, 1.06 and 2.94 microm, obtained with Nd:YAG and Er:YAG lasers, respectively, were used for LIBS analysis of(More)
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