Comprehensive comparison of linear and non-linear methodologies for lithium quantification in geological samples using LIBS

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Ferreira, MFS (Author) Other; Capela, D (Author) Other; Silva, NA (Author) Other; Goncalves, F (Author) Other; Lima, A (Author) Other; Guimaraes, D (Author) Other; Jorge, PAS (Author) FCUP

Journal

The Journal is awaiting validation by the Administrative Services.

Title: SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY

Vol. 195

ISSN: 0584-8547

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00W-ZSY

DOI: 10.1016/j.sab.2022.106504

Abstract (EN): Laser-induced breakdown spectroscopy allows fast chemical analysis of light elements without significant sample preparation, turning it into a promising technique for on-site mining operations. Still, the performance for quantification purposes remains its major caveat, obstructing a broader application of the technique. In this work, we present an extensive comparison of the performances of distinct algorithms for quantification of Lithium in a mining prospection stage, using spectra acquired with both a commercial handheld device and a laboratory prototype. Covering both linear and non-linear methodologies, the results show that, when covering a wide range of concentrations typical on a mining operation, non-linear methodologies manage to achieve errors compatible with a semi-quantitative performance, offering performances better than those obtained with linear methods, which are more affected by saturation and matrix effects. The findings enclosed offer support for future applications in the field and may possibly be generalized for other elements of interest in similar mining environments.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7