High-precision laser ablation inductively coupled plasma mass spectrometry determination of trace elements in geological glasses by internal standardization
| Autor: | Rommulo Vieira Conceição, Carla Cristine Porcher, Felipe Padilha Leitzke, Marcia Elisa Boscato Gomes, Aline Celuppi Wegner, Daniel Grings Cedeño, Márcio Roberto Wilbert de Souza |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
QE1-996.5
Laser ablation Spectrometer laser ablation inductively coupled plasma mass spectrometer Analytical chemistry chemistry.chemical_element trace elements Geology analytical method Electron microprobe Fractionation Yttrium Mass spectrometry Silicate Matrix (chemical analysis) chemistry.chemical_compound chemistry General Earth and Planetary Sciences geochemistry mass spectrometry |
| Zdroj: | Brazilian Journal of Geology, Volume: 51, Issue: 3, Article number: e20210018, Published: 05 NOV 2021 Brazilian Journal of Geology v.51 n.3 2021 Brazilian Journal of Geology Sociedade Brasileira de Geologia (SBGEO) instacron:SBGEO Brazilian Journal of Geology, Vol 51, Iss 3 (2021) |
| Popis: | The analysis of trace elements (TE) in geological materials is a valuable tool to understand geological processes, including studies in geochemistry and petrology. Among the methods applied to determine TE, Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) detects TE contents in the μg/g and ng/g range. The aim of this paper is to validate, at Laboratorio de Geologia Isotopica (LGI) — Centro de Estudos em Petrologia e Geoquimica/Universidade Federal do Rio Grande do Sul (CPGq/UFRGS), a high-precision method for LA-ICP-MS analyses of TE in geological materials. Samples used in this work were reference Max-Planck-Institut fur Chemie — Dingwell (MPI-DING) glasses. The method is used in tandem with the Electron Probe Microanalyzer — Wavelength Dispersive X-ray Spectrometer (EPMA-WDS) technique to determine the major and minor elements of the samples and check for homogeneity. Analyses were conducted in a Thermo® Element2 Inductively Coupled Mass Spectrometer (ICP-MS) coupled to a New Wave Research® Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) (213nm) laser ablation system. 43Ca and 29Si were used as internal standards (IS). Glitter® software and in-house spreadsheets were utilized for reduction treatments. The results using 29Si as IS present a high degree of fractionation errors compared to the results using 43Ca. Uncertainties caused by matrix interferences and fractionation effects can be corrected applying a correction factor. The obtained results demonstrate an effective recovery of TE content for the analyzed reference materials. Moreover, these silicate glasses proved to be robust to create an internal database of matrix matching standards in routine silicate analyses. |
| Databáze: | OpenAIRE |
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