Application of a novel LIBS prototype as an analytical grade tool for Li quantification in pegmatite samples

Diana Guimarães; Miguel F. S. Ferreira; Ricardo Ribeiro; Cátia Dias; Alexandre Lima; Rui C. Martins; Pedro A. S. Jorge

doi:10.1117/12.2527978

3 October 2019 Application of a novel LIBS prototype as an analytical grade tool for Li quantification in pegmatite samples

Diana Guimarães, Miguel F. S. Ferreira, Ricardo Ribeiro, Cátia Dias, Alexandre Lima, Rui C. Martins, Pedro A. S. Jorge

Author Affiliations +

Proceedings Volume 11207, Fourth International Conference on Applications of Optics and Photonics; 1120725 (2019) https://doi.org/10.1117/12.2527978
Event: IV International Conference on Applications of Optics and Photonics (AOP 2019), 2019, Lisbon, Portugal

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.

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Diana Guimarães, Miguel F. S. Ferreira, Ricardo Ribeiro, Cátia Dias, Alexandre Lima, Rui C. Martins, and Pedro A. S. Jorge "Application of a novel LIBS prototype as an analytical grade tool for Li quantification in pegmatite samples", Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 1120725 (3 October 2019); https://doi.org/10.1117/12.2527978

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