Journal
APPLIED RADIATION AND ISOTOPES
Volume 70, Issue 11, Pages 2596-2601Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2012.07.019
Keywords
X-ray fluorescence scattering complex; matrix liquids; Chemometrics; Modeling
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The greatest challenge to material characterization by XRF technique is encountered in direct trace analysis of complex matrices. We exploited partial least squares (PLS) in conjunction with energy dispersive X-ray fluorescence and scattering (EDXRFS) spectrometry to rapidly (200 s) analyze lubricating oils. The PLS-EDXRFS method affords non-invasive quality assurance (QA) analysis of complex matrix liquids as it gave optimistic results for both heavy- and low-Z metal additives. Scatter peaks may further be used for QA characterization via the light elements. (C) 2012 Elsevier Ltd. All rights reserved.
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