UV-VIS and TRLFS speciation study of UO2(2+) - ChO4(2-) system in aqueous solutions (Ch = S, Se)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F14%3A00224394" target="_blank" >RIV/68407700:21340/14:00224394 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/14:00224393

Výsledek na webu

<a href="http://www.radchem.cz/babstr/Babstr14.pdf" target="_blank" >http://www.radchem.cz/babstr/Babstr14.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

UV-VIS and TRLFS speciation study of UO2(2+) - ChO4(2-) system in aqueous solutions (Ch = S, Se)

Popis výsledku v původním jazyce

This experimental study seeks for stability constants, absorption and fluorescence spectra (including fluorescence lifetimes) for the individual species of the general formula [UO2(ChO4)n] (n = 0, 1, 2, 3), specific ion interaction theory parameters eps(i,j) between uran-containing species and the most dominantly present ions (Na+, ClO4-, ChO4^(2-), HChO4-) and their temperature dependence (for which the DH° for all present complex species is derived). Our study was done by preparing of several series of solutions (solutions differing by total sulfate/selenate concentration within the series and by total uranium concentration, pH and ionic strength between different series), measurement of the spectra (UV-VIS abs., TRLFS) and subsequent multilinear analysis (based on Singular Value Decomposition, Parallel Factor Analysis, ...). The obtained results are compared with the previously measured data (our TRLFS spectra for uranyl-selenate complex species were, however, in the time of the abs

Název v anglickém jazyce

UV-VIS and TRLFS speciation study of UO2(2+) - ChO4(2-) system in aqueous solutions (Ch = S, Se)

Popis výsledku anglicky

This experimental study seeks for stability constants, absorption and fluorescence spectra (including fluorescence lifetimes) for the individual species of the general formula [UO2(ChO4)n] (n = 0, 1, 2, 3), specific ion interaction theory parameters eps(i,j) between uran-containing species and the most dominantly present ions (Na+, ClO4-, ChO4^(2-), HChO4-) and their temperature dependence (for which the DH° for all present complex species is derived). Our study was done by preparing of several series of solutions (solutions differing by total sulfate/selenate concentration within the series and by total uranium concentration, pH and ionic strength between different series), measurement of the spectra (UV-VIS abs., TRLFS) and subsequent multilinear analysis (based on Singular Value Decomposition, Parallel Factor Analysis, ...). The obtained results are compared with the previously measured data (our TRLFS spectra for uranyl-selenate complex species were, however, in the time of the abs

Druh

O - Ostatní výsledky

CEP obor

DL - Jaderné odpady, radioaktivní znečištění a kontrola

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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