Holzweber M, Unger WES, Hodoroaba VD. Ionic Liquids as a Reference Material Candidate for the Quick Performance Check of Energy Dispersive X-ray Spectrometers for the Low Energy Range below 1 keV.
Anal Chem 2016;
88:6967-70. [PMID:
27336962 PMCID:
PMC4955014 DOI:
10.1021/acs.analchem.6b01444]
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Abstract
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Ionic
liquids (ILs) are proposed as simple and efficient test materials
to evaluate the performance of energy dispersive X-ray spectrometers
(EDS) in the low energy range below 1 keV. By only one measurement,
C Kα, N Kα, O Kα, and F Kα X-ray lines can
be excited. Additionally, the S Kα line at 2.3 keV and, particularly,
the S L series at 149 eV complete the picture with X-ray lines offered
by the selected ILs. The well-known (certifiable) elemental composition
of the ILs selected in the present study can be used to check the
accuracy of results produced with the available EDS quantification
routines in the low energy range, simultaneously, for several low
atomic number elements. A comparison with other reference materials
in use for testing the performance of EDS in the low energy range
is included.
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