Stability of Th(IV) polymers measured by electrospray mass spectrometry and laser-induced breakdown detection

verfasst von: Clemens Walther, Markus Fuss, Sebastian Büchner, Horst Geckeis
Abstract: The formation of polynuclear thorium hydroxide complexes in acidic aqueous solutions is observed by electrospray mass spectrometry. Size, number of hydroxide ligands and charge of all complexes in solution are identified independently. By repeated measurements over a time span of up to 418 days the stability of the polymers is observed. At concentrations above [Th(IV)] _tot = 10 mM pentamers and dimers are the dominant stable species. In contrast, the fractions of pentamers initially present at [Th(IV)]_tot = 0.2 mM decrease within less than 4 weeks, correlated with the formation of nm-sized colloids observed by LIBD indicating an Ostwald-ripening like process.
Externe Organisation(en): Karlsruher Institut für Technologie (KIT)
Typ: Artikel
Journal: Journal of Radioanalytical and Nuclear Chemistry
Band: 282
Seiten: 1003-1008
Anzahl der Seiten: 6
ISSN: 0236-5731
Publikationsdatum: 16.07.2009
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Analytische Chemie, Kernenergie und Kernkraftwerkstechnik, Radiologie, Nuklearmedizin und Bildgebung, Umweltverschmutzung, Spektroskopie, Öffentliche Gesundheit, Umwelt- und Arbeitsmedizin, Gesundheit, Toxikologie und Mutagenese
Ziele für nachhaltige Entwicklung: SDG 3 – Gute Gesundheit und Wohlergehen
Elektronische Version(en): https://doi.org/10.1007/s10967-009-0158-8 (Zugang: Unbekannt)

BibTeX

@article{1b5fee353fbd4177b71131c57a514895,
title = "Stability of Th(IV) polymers measured by electrospray mass spectrometry and laser-induced breakdown detection",
abstract = "The formation of polynuclear thorium hydroxide complexes in acidic aqueous solutions is observed by electrospray mass spectrometry. Size, number of hydroxide ligands and charge of all complexes in solution are identified independently. By repeated measurements over a time span of up to 418 days the stability of the polymers is observed. At concentrations above [Th(IV)] tot = 10 mM pentamers and dimers are the dominant stable species. In contrast, the fractions of pentamers initially present at [Th(IV)]tot = 0.2 mM decrease within less than 4 weeks, correlated with the formation of nm-sized colloids observed by LIBD indicating an Ostwald-ripening like process.",
keywords = "Colloid, Electrospray, Laser-induced breakdown detection, Polymerization, Thorium",
author = "Clemens Walther and Markus Fuss and Sebastian B{\"u}chner and Horst Geckeis",
note = "Funding information: Acknowledgments We thank Marcus Altmaier (INE) for preparation of the stock solution and, together with Volker Neck, for many fruitful discussions. We also thank Oliver Schwindt for LIBD and the INE analytics group for ICP MS measurements. Finally, we acknowledge financial support by the {\textquoteleft}{\textquoteleft}Programm Nuklear{\textquoteright}{\textquoteright} and by the {\textquoteleft}{\textquoteleft}Helmholtz Russia Joint Research Group{\textquoteright}{\textquoteright} of the Helmholtz Gemeinschaft Deutscher Forschungszentren (HGF).",
year = "2009",
month = jul,
day = "16",
doi = "10.1007/s10967-009-0158-8",
language = "English",
volume = "282",
pages = "1003--1008",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
issn = "0236-5731",
publisher = "Springer Netherlands",
number = "3",
}