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Proceedings Paper

Application of a novel LIBS prototype as an analytical grade tool for Li quantification in pegmatite samples
Author(s): Diana Guimarães; Miguel F. S. Ferreira; Ricardo Ribeiro; Cátia Dias; Alexandre Lima; Rui C. Martins; Pedro A. S. Jorge
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Paper Abstract

A high-resolution advanced laser induced breakdown spectroscopy prototype was used to quantify lithium (Li) in lithiniferous rocks. Samples were collected from Barroso's mine (Portugal), claimed as Western Europe’s largest spodumene Li discovery. 51 samples from a reverse circulation drill were collected, one for each meter interval, dried, milled, pressed into pellets and further analyzed by laser induced breakdown spectroscopy. Quantification was attempted using either linear models based on the intensity of selected Li spectral lines or advanced chemometrics methods. The latter was very successful, with correlation coefficients of 0.97 against certified laboratory results.

Paper Details

Date Published: 3 October 2019
PDF: 6 pages
Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 1120725 (3 October 2019); doi: 10.1117/12.2527978
Show Author Affiliations
Diana Guimarães, INESC-TEC (Portugal)
Miguel F. S. Ferreira, INESC-TEC (Portugal)
Univ. of Porto (Portugal)
Ricardo Ribeiro, Univ. of Porto (Portugal)
Cátia Dias, Univ. of Porto (Portugal)
Alexandre Lima, Univ. of Porto (Portugal)
Rui C. Martins, INESC-TEC (Portugal)
Pedro A. S. Jorge, INESC-TEC (Portugal)
Univ. of Porto (Portugal)

Published in SPIE Proceedings Vol. 11207:
Fourth International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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