Use of chemometrics and laser-induced breakdown spectroscopy for quantitative analysis of major and minor elements in aluminium alloys

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DOIResolve DOI: http://doi.org/10.1366/000370207780220813
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TypeArticle
Journal titleApplied Spectroscopy
Volume61
Issue3
Pages327332; # of pages: 6
SubjectLaser-induced breakdown spectroscopy; Chemometrics; Aluminum alloys; Multivariable
AbstractIn 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.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NRC number53652
NPARC number15820157
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Record identifier1ff2f6d4-4e22-458b-92e8-cca2f9943bbf
Record created2010-07-19
Record modified2016-05-09
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