Pyridine-2,6-dicarboxylic acid esters – new ligands for extraction and determination of metals
- Authors: Kazanina D.А.1, Alyapyshev M.Y.2, Polukeev V.А.3, Babain V.А.1, Kirsanov D.O.4
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Affiliations:
- Khlopin Radium Institute
- Polymetal Engineering JSC
- Vekton JSC
- Saint Petersburg State University
- Issue: Vol 79, No 12 (2024)
- Pages: 1300-1316
- Section: ORIGINAL ARTICLES
- Submitted: 30.05.2025
- URL: https://archivog.com/0044-4502/article/view/681375
- DOI: https://doi.org/10.31857/S0044450224120038
- EDN: https://elibrary.ru/sttrqd
- ID: 681375
Cite item
Abstract
N,O-Hybrid donor ligands are promising compounds for the isolation and separation of actinides and lanthanides from technological solutions during the processing of spent nuclear fuel. New synthesized N,O-hybrid donor ligands – derivatives of 2,6-pyridindicarboxylic acid – have been studied as extractants and membrane components for potentiometric sensors. The extraction ability of solutions of these compounds in meta-nitrobenzotrifluoride with respect to d- and f-elements from solutions of nitric and perchloric acids has been studied. It has been shown that the replacement of a mide groups with ester groups reduces the extraction ability of ligands. The transition from nitric acid to chloric acid gives a sharp increase in the extraction capacity due to the perchlorate effect. A significant increase in the extraction capacity is also observed when chlorinated cobalt dicarbollide is added to the organic phase: the highest distribution coefficient is obtained with a ratio of the concentrations of the extractant and the additive 1:1. Potentiometric membrane sensors based on new ligands have demonstrated significant sensitivity to Cd2+. The correlation between the behavior of new ligands in extraction and in potentiometric measurements has been studied.
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About the authors
D. А. Kazanina
Khlopin Radium Institute
Author for correspondence.
Email: darinakazanina@gmail.com
Russian Federation, Saint Petersburg, 194021
M. Yu. Alyapyshev
Polymetal Engineering JSC
Email: darinakazanina@gmail.com
Russian Federation, Saint Petersburg, 198216
V. А. Polukeev
Vekton JSC
Email: darinakazanina@gmail.com
Russian Federation, Saint Petersburg, 194021
V. А. Babain
Khlopin Radium Institute
Email: darinakazanina@gmail.com
Russian Federation, Saint Petersburg, 194021
D. O. Kirsanov
Saint Petersburg State University
Email: darinakazanina@gmail.com
Russian Federation, Saint Petersburg, 194021
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