| Téléchargement | - Voir le manuscrit accepté : Use of chemometrics and laser-induced breakdown spectroscopy for quantitative analysis of major and minor elements in aluminium alloys (PDF, 685 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1366/000370207780220813 |
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| Auteur | Rechercher : Doucet, François R.; Rechercher : Belliveau, Thomas F.; Rechercher : Fortier, Jean-Luc; Rechercher : Hubert, Joseph |
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| Format | Texte, Article |
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| Sujet | Laser-induced breakdown spectroscopy; Chemometrics; Aluminum alloys; Multivariable |
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| Résumé | In the present work, quantitative analysis of major and minor elements in aluminum alloys is investigated using chemometrics and laser-induced plasma spectroscopy with a commercially available laser-induced breakdown (LIBS) spectrometer. Multivariate calibrations use the entire signal matrix for all elements in a single multivariate regression model. This enables accounting for the correlation between variables often referred to as matrix effects in conventional univariate modeling. Modeling the entire signal matrix improves robustness over traditional univariate calibration since it can compensate for matrix effects. Several nonlinear data pretreatment methods have been used to correct for nonlinear behaviors of the analytical signals prior to performing the multivariate calibration. The use of multivariate calibration in combination with cubic implicit nonlinear data pretreatment showed the most accurate results. The accuracy reported with the developed multivariate calibration is better than 5% for the major alloying elements. Based on the results obtained, the use of chemometrics and laser-induced plasma spectroscopy have been successfully applied to the quantitative analysis of major and minor alloying elements in aluminum. |
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| Date de publication | 2007-03-01 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 53652 |
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| Numéro NPARC | 15820157 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 1ff2f6d4-4e22-458b-92e8-cca2f9943bbf |
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| Enregistrement créé | 2010-07-19 |
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| Enregistrement modifié | 2020-05-10 |
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