title: Feasibility for direct rapid energy dispersive X-ray fluorescence (EDXRF) and scattering analysis of complex matrix liquids by partial least squares.
abstract: 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.
authors.affiliation: Applied Nuclear and Radiation Physics Group, Department of Physics, University of Nairobi, P.O. Box 30197-00100, Nairobi, Kenya. hkalambuka@uonbi.ac.ke
authors.forename: K H
authors.initials: KH
authors.lastname: Angeyo
authors.forename: S
authors.initials: S
authors.lastname: Gari
authors.forename: A O
authors.initials: AO
authors.lastname: Mustapha
authors.forename: J M
authors.initials: JM
authors.lastname: Mangala