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Statements

Subject Item
n2:RIV%2F68407700%3A21340%2F12%3A00199546%21RIV13-MPO-21340___
rdf:type
skos:Concept n12:Vysledek
dcterms:description
The uranium separation from natural waters was studied at the Department of Nuclear Chemistry in late 80´s and early 90's. TiO-PAN sorbent (titanium dioxide embedded in polyacrylonitrile) showed high sorption capacity for this element. This composite sorbent is planned to be used for uranium preconcentration for measuring environmental 236U/U ratios by Acceleration Mass Spectrometry (AMS) in bilateral cooperation with the University of Vienna. After the preliminary AMS results showing anthropogenic contamination in TiO-PAN sorbent, the preparation of titanium oxide was studied with a strong emphasis on elimination of this contamination. Several samples of titanium oxide were prepared from an organic uranium-free compound. These samples were studied using X-Ray Diffraction for their crystal structure and using selective sorption of nitrogen gas for their specific surface area. Their sorption properties were also evaluated. Presently we are focusing on finding a water source which is not anthropogenically contaminated in order to use this water for further experiments and on the following separation and concentration steps for AMS sample preparation. The uranium separation from natural waters was studied at the Department of Nuclear Chemistry in late 80´s and early 90's. TiO-PAN sorbent (titanium dioxide embedded in polyacrylonitrile) showed high sorption capacity for this element. This composite sorbent is planned to be used for uranium preconcentration for measuring environmental 236U/U ratios by Acceleration Mass Spectrometry (AMS) in bilateral cooperation with the University of Vienna. After the preliminary AMS results showing anthropogenic contamination in TiO-PAN sorbent, the preparation of titanium oxide was studied with a strong emphasis on elimination of this contamination. Several samples of titanium oxide were prepared from an organic uranium-free compound. These samples were studied using X-Ray Diffraction for their crystal structure and using selective sorption of nitrogen gas for their specific surface area. Their sorption properties were also evaluated. Presently we are focusing on finding a water source which is not anthropogenically contaminated in order to use this water for further experiments and on the following separation and concentration steps for AMS sample preparation.
dcterms:title
Uranium sorption and AMS measurements Uranium sorption and AMS measurements
skos:prefLabel
Uranium sorption and AMS measurements Uranium sorption and AMS measurements
skos:notation
RIV/68407700:21340/12:00199546!RIV13-MPO-21340___
n12:predkladatel
n13:orjk%3A21340
n3:aktivita
n18:S n18:P
n3:aktivity
P(7AMB12AT022), P(FR-TI3/245), S
n3:dodaniDat
n6:2013
n3:domaciTvurceVysledku
n10:5970458 n10:7566417 n10:4268970
n3:druhVysledku
n4:O
n3:duvernostUdaju
n9:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
176182
n3:idVysledku
RIV/68407700:21340/12:00199546
n3:jazykVysledku
n15:eng
n3:klicovaSlova
uranium; titanium oxide
n3:klicoveSlovo
n7:titanium%20oxide n7:uranium
n3:kontrolniKodProRIV
[4D3D3740CB76]
n3:obor
n14:CH
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
5
n3:projekt
n16:7AMB12AT022 n16:FR-TI3%2F245
n3:rokUplatneniVysledku
n6:2012
n3:tvurceVysledku
Wallner, G. Steier, P. Špendlíková, Irena Němec, Mojmír Šebesta, Ferdinand
n17:organizacniJednotka
21340