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Gamma-Radiolytic Stability of Solvents Containing C5-BPP (2,6-Bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine) for Actinide(III)/Lanthanide(III) Separation

A. Wilden ; G. Modolo ; M. Hupert ; B. Santiago-Schubel ; Elin Löfström Engdahl (Institutionen för kemi och kemiteknik, Kärnkemi) ; Jenny Halleröd (Institutionen för kemi och kemiteknik, Kärnkemi) ; Christian Ekberg (Institutionen för kemi och kemiteknik, Kärnkemi) ; B. J. Mincher ; S. P. Mezyk
Solvent Extraction and Ion Exchange (0736-6299). Vol. 34 (2016), 1, p. 1-12.
[Artikel, refereegranskad vetenskaplig]

The stability of solvents containing the C5-BPP (2,6-Bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine) extractant against gamma-irradiation up to 330 kGy adsorbed dose was evaluated using HPLC mass spectrometric and solvent extraction methods. The main radiolysis products were identified using high-resolution mass spectrometry. Quantitative analysis of the residual C5-BPP concentration in irradiated samples was accomplished by a specifically developed MRM (Multiple Reaction Monitoring) method. A mixture of C5-BPP with 2-bromohexanoic acid in kerosene and 1-octanol, which had been used in an actinide(III)/lanthanide(III) separation process demonstration test, was also studied for its radiolytic stability and a remarkable protective effect of the presence of nitric acid during irradiation was found.

Nyckelord: C5-BPP, multiple reaction monitoring, high resolution mass spectrometry, mass-spectrometry, radiolysis

Denna post skapades 2016-03-30.
CPL Pubid: 233854


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Institutionen för kemi och kemiteknik, Kärnkemi



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