Prediction and measurement of complexation of radionuclide mixtures by α-isosaccharinic, gluconic and picolinic acids

Nick Evans; Peter Warwick; Mónica Felipe-Sotelo; Sarah Vines

doi:10.1007/s10967-012-1828-5

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 293: Issue 3

Prediction and measurement of complexation of radionuclide mixtures by α-isosaccharinic, gluconic and picolinic acids

Authors:

Nick Evans

Nick Evans Department of Chemistry, Loughborough University, Loughborough, Leics, LE11 3TU UK

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Peter Warwick

Peter Warwick Department of Chemistry, Loughborough University, Loughborough, Leics, LE11 3TU UK

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Mónica Felipe-Sotelo

Mónica Felipe-Sotelo Department of Chemistry, Loughborough University, Loughborough, Leics, LE11 3TU UK

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, and

Sarah Vines

Sarah Vines NDA-RWMD, Curie Avenue, Harwell, Didcot, Oxon, OX11 0RH UK

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Pages:: 725–730

Online Publication Date:: 24 May 2012

Publication Date:: 01 Sep 2012

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-012-1828-5

Keywords:: 60Co; Eu; 90Sr; Isosaccharinate; Gluconate; Picolinate

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Abstract

The purpose of this study was to investigate the effects of competition between cobalt, europium and strontium for isosaccharinate, gluconate and picolinate. Systems where results indicated that competitive effects were significant have been identified. Thermodynamic calculations were performed for each system for comparison with the experimental results. Some exceptions may be due to precipitation of some species, or presence of species not in databases, or formation of mixed-metal complexes, or sorption to the solid phase(s). In some of the experiments, the complexity of the systems studied caused difficulty in identifying consistent trends. By concentrating on the results for simpler systems (i.e. for solubilities in the presence and absence of organic complexants and with just one competing metal ion), the evidence for competition effects has been investigated. Evidence for solubility enhancement due to organic ligands was apparent in the data for the systems Co with gluconate and Eu with isosaccharinate and gluconate. Of these above cases, the systems in which the effects of the competing ion are consistent with competition were limited to the cases of Eu with isosaccharinate and Sr as the competing ion, and Eu with gluconate and either Co or Sr as the competing ion.

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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)