Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8041531 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2014 | 6 Pages |
Abstract
A series of granite samples (Grimsel and Ãspö) enriched by sorption with natU (10â3Â M, 10â4Â M, 10â5Â M in solution) and La (10â3Â M, 10â4Â M in solution) has been scanned by PIXE over a surface of 1920Â ÃÂ 1920Â mm2 together with non-enriched Grimsel and Ãspö granites and a glass standard. An assessment of minimum detection limits, MDL's, for several elements has been performed with the use of standard materials. Due to mapping and the high sensitivity of the new AGLAE detection system, U levels around 30Â ppm can be detected from the whole PIXE spectrum (one low energy detector and four summed filtered detectors) while U reach grains, inhomogeneously distributed over the surface can be clearly identified through the multi elemental maps and analyzed separately. Even the nominally enriched samples have La levels below the MDL, probably because precipitation of the element (and not adsorption) mostly took place, and precipitates were eliminated after surface cleaning carried out before PIXE analyses.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Alessandro Zucchiatti, Ursula Alonso, Quentin Lemasson, Tiziana Missana, Brice Moignard, Claire Pacheco, Laurent Pichon, Sandra Camarena de la Mora,