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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

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

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY

Vol. 195

ISSN: 0584-8547

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 3 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7