Informace o publikaci

Uranium Oxide Clusters by Laser Desorption Ionisation During MALDI-TOF MS Analysis of Uranium(VI)

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SOTO-GUERRERO Julio Arturo GAJDOŠOVÁ Dagmar HAVEL Josef

Rok publikování 2001
Druh Článek v odborném periodiku
Časopis / Zdroj Journal of Radioanalytical and Nuclear Chemistry
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Obor Analytická chemie, separace
Popis Laser desorption ionization (LDI) mode of matrix-assisted laser desorption ionizaiton time-of-flight mass spectrometry (MALDI-TOFMS) analysis of uranium(VI) leads to the formation of uranium oxides clusters, as with fast atom bombardment (FAB). Different uranium clusters than those with FAB were observed. Three defferent families of formula (UO2)xOy+, and two of formula (UO2)xOy2+ were found. While x increases, the O:U ratio tends to 3. The relationship between neighboring clusters can be described as (UO2)xOy+=(UO2)x-1Oy-1+UO3. The formation of clusters can be eliminated using some matrices, and a more sensitive uranium determination with a detection limit dowm to 10-12M is possible.
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