Preparation and characterization of polymer layer systems for validation of 3D Micro X-ray fluorescence spectroscopy

verfasst von
Ina Schaumann, Wolfgang Malzer, Ioanna Mantouvalou, Lars Lühl, Birgit Kanngießer, Rainer Dargel, Ulrich Giese, Carla Vogt
Abstract

For the validation of the quantification of the newly-developed method of 3D Micro X-ray fluorescence spectroscopy (3D Micro-XRF) samples with a low average Z matrix and minor high Z elements are best suited. In a light matrix the interferences by matrix effects are minimized so that organic polymers are appropriate as basis for analytes which are more easily detected by X-ray fluorescence spectroscopy. Polymer layer systems were assembled from single layers of ethylene-propylene-diene rubber (EPDM) filled with changing concentrations of silica and zinc oxide as inorganic additives. Layer thicknesses were in the range of 30-150 μm. Before the analysis with 3D Micro-XRF all layers have been characterized by scanning micro-XRF with regard to filler dispersion, by infrared microscopy and light microscopy in order to determine the layer thicknesses and by ICP-OES to verify the concentration of the X-ray sensitive elements in the layers. With the results obtained for stacked polymer systems the validity of the analytical quantification model for the determination of stratified materials by 3D Micro-XRF could be demonstrated.

Organisationseinheit(en)
Institut für Anorganische Chemie
Externe Organisation(en)
Technische Universität Berlin
Deutsches Institut für Kautschuktechnologie e.V. (DIK)
Typ
Artikel
Journal
Spectrochimica Acta - Part B Atomic Spectroscopy
Band
64
Seiten
334-340
Anzahl der Seiten
7
ISSN
0584-8547
Publikationsdatum
04.2009
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Analytische Chemie, Atom- und Molekularphysik sowie Optik, Instrumentierung, Spektroskopie
Elektronische Version(en)
https://doi.org/10.1016/j.sab.2009.03.004 (Zugang: Geschlossen)