Confocal XRF imaging for determination of arsenic distribution in a sample of historic plaster

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F22%3A00360950" target="_blank" >RIV/68407700:21340/22:00360950 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.radphyschem.2022.110201" target="_blank" >https://doi.org/10.1016/j.radphyschem.2022.110201</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.radphyschem.2022.110201" target="_blank" >10.1016/j.radphyschem.2022.110201</a>

Result language
angličtina
Original language name
Confocal XRF imaging for determination of arsenic distribution in a sample of historic plaster
Original language description
This paper describes the use of X-ray fluorescence (XRF) scanning, XRF microanalysis, and confocal XRF for identification of toxic elements, especially arsenic, in a sample taken from a historic wall of the rectory building in Potstat (Prerov district, Czech Republic). We focused our attention mainly on the confocal XRF imaging, which can visualize non-destructively a cross-section of a selected part of the sample. Since the images of X-ray intensities are disturbed by the X-ray absorption in a sample, a method reducing this effect was proposed and applied for the determination of the arsenic depth distribution. This method comprises an experimental determination of attenuation coefficients for the excitation beam and the arsenic characteristic X-rays as well. These coefficients are derived from the exponential decrease of scattered radiation intensities in energy regions corresponding to the excitation X-ray energies and energies of scattered X-rays close to the arsenic K alpha line, respectively. This correction improved the image showing the depth distribution of arsenic in the sample.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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