New fluoride target matrix preparation procedure for determination of 236U with accelerator mass spectrometry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00341162" target="_blank" >RIV/68407700:21340/20:00341162 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.nimb.2020.03.029" target="_blank" >https://doi.org/10.1016/j.nimb.2020.03.029</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nimb.2020.03.029" target="_blank" >10.1016/j.nimb.2020.03.029</a>
Alternative languages
Result language
angličtina
Original language name
New fluoride target matrix preparation procedure for determination of 236U with accelerator mass spectrometry
Original language description
In recent years, radionuclide 236U has become a valuable analytical tool covering a wide area of applications, including overall monitoring of environmental radioactive contamination for nuclear safeguards purposes, forensic analyses, tracing of various natural processes, e.g. ocean currents, soil erosion and others. Due to low concentrations of 236U in environmental samples, highly sensitive mass spectrometric methods as ICP-MS and AMS require to be applied in related analyses. AMS measurements usually utilize target samples with uranium converted to a form of oxide incorporated in iron(III) oxide (Fe2O3) carrier matrix. Alternatively, fluoride target matrices, uranium tetrafluoride (UF4) in particular, have been studied as a promising alternative, providing significantly higher ion currents at a simultaneous reduction of occurring interferences by replacement of oxygen with monoisotopic fluorine 19F. Despite these advantages, application of fluoride target matrices in routine analytical process still faces several major problems regarding the preparation of pure, anhydrous uranium tetrafluoride as well as the continuity of preparation procedures with preceding sample treatment, which demand further modifications. In this respect, a new fluoride target matrix preparation method has been proposed, more suitable for determination of 236U in natural samples. Applicability of the procedure has been demonstrated on a series of target samples analysed at VERA AMS laboratory, University of Vienna.
Czech name
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Czech description
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Classification
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
10402 - Inorganic and nuclear chemistry
Result continuities
Project
<a href="/en/project/EF16_019%2F0000728" target="_blank" >EF16_019/0000728: Ultra-trace isotope research in social and environmental studies using accelerator mass spectrometry</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nuclear Instruments and Methods in Physics Research, Section B, Beam Interactions with Materials and Atoms
ISSN
0168-583X
e-ISSN
1872-9584
Volume of the periodical
472
Issue of the periodical within the volume
June
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
64-71
UT code for WoS article
000528192700011
EID of the result in the Scopus database
2-s2.0-85083109377