Distinguishing secondary uranium mineralizations in uranium ore using LIBS imaging

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F23%3A10168723" target="_blank" >RIV/00025798:_____/23:10168723 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/23:00131713

Result on the web

<a href="https://doi.org/10.1016/j.sab.2023.106734" target="_blank" >https://doi.org/10.1016/j.sab.2023.106734</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sab.2023.106734" target="_blank" >10.1016/j.sab.2023.106734</a>

Result language

angličtina

Original language name

Distinguishing secondary uranium mineralizations in uranium ore using LIBS imaging

Original language description

The main aim of this work is to demonstrate the potential of LIBS as a complementary technique to electron probe microanalysis (EPMA) for distinguishing and characterizing uranium mineralizations. Combining both methods can help estimate uranium oxidation states and monitor the possible mobilization of uranium in the environment by detecting oxygen and hydrogen using LIBS. It was confirmed that the LIBS signal of oxygen is proportional to oxygen content and that the strength of the oxygen signal is closely related to the oxidation state of uranium. The second assumption that the hydrogen signal is closely related to water (or hydroxyl group) content was also confirmed by detecting a stronger hydrogen signal from the presumed secondary mineralization. In contrast, hydrogen was not found in uraninite and quartz.When superimposed, images obtained with LIBS and EPMA show a clearly visible contrast between primary and secondary uranium mineralizations. Images of uranium obtained with the two techniques match perfectly, while the LIBS image of oxygen confirms the presence of an oxidized form of secondary uranium minerals (uranophane). The LIBS image of hydrogen clearly shows mineral phases containing water or a hydroxyl group, confirming that uranophane and other associated minerals contain greater amounts of hydrogen (water).

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10505 - Geology

Project

<a href="/en/project/EF16_026%2F0008459" target="_blank" >EF16_026/0008459: Long-term research of geochemical barriers for nuclear waste disposal</a><br>

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY

ISSN

0584-8547

e-ISSN

1873-3565

Volume of the periodical

206

Issue of the periodical within the volume

August 2023

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

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UT code for WoS article

001060797800001

EID of the result in the Scopus database

2-s2.0-85162861505