Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 263: Issue 3
The autoreduction of pertechnetate in aqueous, alkaline solutions
Authors:
D. E. Berning Chemistry Division, Los Alamos National Laboratory C-INC, MS J514, Los Alamos, NM 87545, USA

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N. C. Schroeder Chemistry Division, Los Alamos National Laboratory C-INC, MS J514, Los Alamos, NM 87545, USA

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R. M. Chamberlin Chemistry Division, Los Alamos National Laboratory C-INC, MS J514, Los Alamos, NM 87545, USA

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Pages:
613–618
Online Publication Date:
24 Mar 2005
Publication Date:
17 Feb 2005
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10967-005-0632-x
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Summary  

The autoreduction of pertechnetate (99TcO4-) to Tc(IV/V) alkoxide complexes in aqueous, alkaline, solutions is described. Solutions of sodium pertechnetate (0.01M) reacted with nitrogen and oxygen donor ligands (1.0M) in 2M sodium hydroxide. Solutions containing nitrogen donor ligands (e.g., EDTA) showed the initial formation of lightly colored complexes followed by rapid decomposition in air. In contrast, stable, reduced complexes were formed within minutes of mixing pertechnetate with mono- and disaccharides in strong base, as indicated by a persistent color change. Chemical yields of these reactions were determined by thin layer chromatography or paper chromatography and radiochemically assayed with a Bioscan imaging scanner. Analysis by UV-vis spectroscopy suggested that Tc(IV) or Tc(V) complexes were produced, with the oxidation state dependent on the reducing ligand. These experiments may help explain the reduction of pertechnetate to the soluble complexes that have been found in the Hanford nuclear waste tanks.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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