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Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: The example of garnet

Publication ,  Journal Article
Alvey, DC; Morton, K; Harmon, RS; Gottfried, JL; Remus, JJ; Collins, LM; Wise, MA
Published in: Applied Optics
May 1, 2010

Laser-induced breakdown spectroscopy (LIBS) is an analytical technique real-time geochemical analysis that is being developed for portable use outside of the laboratory. In this study, statistical signal processing and classification techniques were applied to single-shot, broadband LIBS spectra, comprising measured plasma light intensities between 200 and 960 nm, for a suite of 157 garnets of different composition from 92 locations worldwide. Partial least squares discriminant analysis was applied to sets of 25 LIBS spectra for each garnet sample and used to classify the garnet samples based on composition and geographic origin. Careful consideration was given to the cross-validation procedure to ensure that the classification algorithm is robust to unseen data. The results indicate that broadband LIBS analysis can be used to discriminate garnets of different composition and has the potential to discern geographic origin. © 2010.

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Published In

Applied Optics

DOI

EISSN

1539-4522

ISSN

1559-128X

Publication Date

May 1, 2010

Volume

49

Issue

13

Related Subject Headings

  • Optics
  • 5102 Atomic, molecular and optical physics
  • 4008 Electrical engineering
  • 0913 Mechanical Engineering
  • 0906 Electrical and Electronic Engineering
  • 0205 Optical Physics
 

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Alvey, D. C., Morton, K., Harmon, R. S., Gottfried, J. L., Remus, J. J., Collins, L. M., & Wise, M. A. (2010). Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: The example of garnet. Applied Optics, 49(13). https://doi.org/10.1364/AO.49.00C168
Alvey, D. C., K. Morton, R. S. Harmon, J. L. Gottfried, J. J. Remus, L. M. Collins, and M. A. Wise. “Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: The example of garnet.” Applied Optics 49, no. 13 (May 1, 2010). https://doi.org/10.1364/AO.49.00C168.
Alvey DC, Morton K, Harmon RS, Gottfried JL, Remus JJ, Collins LM, et al. Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: The example of garnet. Applied Optics. 2010 May 1;49(13).
Alvey, D. C., et al. “Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: The example of garnet.” Applied Optics, vol. 49, no. 13, May 2010. Scopus, doi:10.1364/AO.49.00C168.
Alvey DC, Morton K, Harmon RS, Gottfried JL, Remus JJ, Collins LM, Wise MA. Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: The example of garnet. Applied Optics. 2010 May 1;49(13).

Published In

Applied Optics

DOI

EISSN

1539-4522

ISSN

1559-128X

Publication Date

May 1, 2010

Volume

49

Issue

13

Related Subject Headings

  • Optics
  • 5102 Atomic, molecular and optical physics
  • 4008 Electrical engineering
  • 0913 Mechanical Engineering
  • 0906 Electrical and Electronic Engineering
  • 0205 Optical Physics