Multivariate approach to the chemical mapping of uranium in sandstone-hosted uranium ores analyzed using double pulse Laser-Induced Breakdown Spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F16%3A00090622" target="_blank" >RIV/00216224:14310/16:00090622 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/16:PU119891 RIV/68407700:21340/16:00308945

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S058485471630146X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S058485471630146X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sab.2016.08.014" target="_blank" >10.1016/j.sab.2016.08.014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Multivariate approach to the chemical mapping of uranium in sandstone-hosted uranium ores analyzed using double pulse Laser-Induced Breakdown Spectroscopy

Popis výsledku v původním jazyce

This work is focused on the high resolution mapping of uranium in sandstone-hosted uranium ores using Laser-Induced Breakdown Spectroscopy technique. In order to obtain chemical image with highest possible spatial resolution, LIBS system in orthogonal double pulse arrangement was employed. Owing to this experimental arrangement the spot size of 50 um in diameter resulting in lateral resolution of 100 um was reached. Despite the increase in signal intensity in DP LIBS modification, the detection of uranium is challenging. The main cause is the high density of uranium spectral lines, which together with broadening of LIBS spectral lines overreaches the resolution of commonly used spectrometers. It results in increased overall background radiation with only few distinguishable uranium lines. Three different approaches in the LIBS data treatment for the uranium detection were utilized: i) spectral line intensity, ii) region of apparent background and iii) multivariate data analysis.

Název v anglickém jazyce

Multivariate approach to the chemical mapping of uranium in sandstone-hosted uranium ores analyzed using double pulse Laser-Induced Breakdown Spectroscopy

Popis výsledku anglicky

This work is focused on the high resolution mapping of uranium in sandstone-hosted uranium ores using Laser-Induced Breakdown Spectroscopy technique. In order to obtain chemical image with highest possible spatial resolution, LIBS system in orthogonal double pulse arrangement was employed. Owing to this experimental arrangement the spot size of 50 um in diameter resulting in lateral resolution of 100 um was reached. Despite the increase in signal intensity in DP LIBS modification, the detection of uranium is challenging. The main cause is the high density of uranium spectral lines, which together with broadening of LIBS spectral lines overreaches the resolution of commonly used spectrometers. It results in increased overall background radiation with only few distinguishable uranium lines. Three different approaches in the LIBS data treatment for the uranium detection were utilized: i) spectral line intensity, ii) region of apparent background and iii) multivariate data analysis.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Spectrochimica Acta B

ISSN

0584-8547

e-ISSN

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Svazek periodika

123

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

143-149

Kód UT WoS článku

000389497400016

EID výsledku v databázi Scopus

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