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- Title
Detection limits evaluation of a portable energy dispersive X-ray fluorescence setup using different filter combinations.
- Authors
Pessanha, Sofia; Samouco, Ana; Adão, Ricardo; Carvalho, Maria Luisa; Santos, José Paulo; Amaro, Pedro
- Abstract
In this paper, we study the performance of a portable energy dispersive X-ray fluorescence spectrometer by making use of different filter configurations at the X-ray tube output. To fulfill this purpose, we systematically investigated how the detection limits (DL) can be improved by applying three different combinations of filters (Al, Cu and Al + Cu) between the X-ray tube and standard reference materials of different average- Z matrices. The obtained results were compared with the DL obtained with a benchtop system with triaxial geometry, considered the benchmark in detection of trace elements in a variety of sample matrices. The major differences occurred for the low- Z matrices, reflecting the increase of DL for elements with emission energies between 5 and 15 keV using filters. Regarding the high- Z matrices, the use of filters did not render an effective improvement in the DL but had a positive effect in diminishing sum peaks that could hinder the evaluation of some elements. Copyright © 2017 John Wiley & Sons, Ltd.
- Subjects
ENERGY dispersive X-ray spectroscopy; X-ray fluorescence; FILTERS &; filtration; DETECTION limit; PERFORMANCE evaluation
- Publication
XRS: X-ray Spectrometry, 2017, Vol 46, Issue 2, p102
- ISSN
0049-8246
- Publication type
Article
- DOI
10.1002/xrs.2737