Reference : Inter-techniques comparison of PIXE and XRF for Lake sediments
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/222510
Inter-techniques comparison of PIXE and XRF for Lake sediments
English
El Ouahabi, Meriam mailto [Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires >]
Chene, Grégoire mailto [Université de Liège - ULiège > Département de physique > Spectroscopie atomique et nucléaire, archéométrie >]
Strivay, David mailto [Université de Liège - ULiège > Département de physique > Spectroscopie atomique et nucléaire, archéométrie >]
Vander Auwera, Jacqueline mailto [Université de Liège - ULiège > Département de géologie > Pétrologie, géochimie endogènes et pétrophysique >]
Hubert, Aurelia mailto [Université de Liège - ULiège > Département de géographie > Géomorphologie et Géologie du Quaternaire >]
2018
Journal of Analytical Atomic Spectrometry
Royal Society of Chemistry
33
883 - 892
Yes (verified by ORBi)
International
0267-9477
United Kingdom
[en] PIXE ; XRF ; Inter-techniques comparison of ; Lake sediments ; etehrogeneous sediments ; accuracy of chemical results ; preparation protocol ; Antioch ; Turkey
[en] In this paper we describe a validation procedure for chemical analysis of major elements and some minor elements as Sr, Cr, Ni, Zn and Zr in heterogeneous geological sediments. The procedure applies two distinct techniques (PIXE and XRF) to the analysis of sediments. In this work an inter-technique comparison of the heterogeneous lacustrine sediments from the Amik Lake in the vicinity of the Roman city of Antioch (SE, Turkey) was carried out. Dried raw samples and with the addition of linking powder were analyzed using PIXE performed on the “Arkeo” beam line of the University of Liège AVF-Cyclotron and XRF (University of Liège). The aim of this work was to compare PIXE and XRF analysis with the set-ups routinely in use in the two laboratories. The purpose was also to determine the best combination of techniques and sample preparation protocol to be applied for heterogeneous sediments and the main elements of interest for each specific technique. The results are in agreement among the two techniques, with discrepancies concerning almost lighter and minor elements. These differences are related mainly to the texture of the sediments and the intrinsic features of the XRF and PIXE techniques. Major and selected minor elements are sensitive to the grain-size and the porosity of the samples. However, the accuracy of both XRF and PIXE requires the reduction of the grain-size or addition of linking powder to the sediments to fill the voids in order to increase the intensities of both lighter and minor elements. The results demonstrate the critical importance of sample treatment prior to analysis as well as the necessity of several measurement points and replicates to ensure the accuracy of the PIXE results.
Researchers ; Professionals ; Students ; Others
http://hdl.handle.net/2268/222510
10.1039/C8JA00019K
http://pubs.rsc.org/en/content/articlepdf/2014/JA/C8JA00019K?page=search
FP7 ; 609405 - COFUNDPOSTDOCDTU - HC Ørsted Postdoc, cofunded by Marie Curie Actions

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