Analysis of Lignite Using Laser-Induced Breakdown Spectroscopy

The application of laser-induced breakdown spectroscopy (LIBS) to the chemical analysis of low-ash lignite has been investigated. A Nd: YAG laser (λ = 1064 nm) is used to induce emission from the ash-forming components, which is then spectrally resolved and analyzed. LIBS analyses of five inorganic...

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Bibliographic Details
Published in:Applied spectroscopy 2000-08, Vol.54 (8), p.1231-1235
Main Authors: Wallis, Fiona J., Chadwick, Bruce L., Morrison, Richard J. S.
Format: Article
Language:English
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Summary:The application of laser-induced breakdown spectroscopy (LIBS) to the chemical analysis of low-ash lignite has been investigated. A Nd: YAG laser (λ = 1064 nm) is used to induce emission from the ash-forming components, which is then spectrally resolved and analyzed. LIBS analyses of five inorganic components of lignite were shown to be reproducible between sample pellets at a 95% confidence level. Detection limits (in ppm) on an as-received basis of 60 (Ca and Al), 70 (Na), 90 (Fe), and 200 (Mg and Si) were obtained from a study of 30 lignite samples, each of which was interrogated by 300 laser pulses.
ISSN:0003-7028
1943-3530
DOI:10.1366/0003702001950814