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. Issue 1 (2nd January 2016)

• Record Type: Journal Article
• Authors: Wilden, Andreas; Modolo, Giuseppe; Hupert, Michelle; Santiago-Schübel, Beatrix; Löfström-Engdahl, Elin; Halleröd, Jenny; Ekberg, Christian; Mincher, Bruce J.; Mezyk, Stephen P.
• Is Part Of: Solvent extraction and ion exchange. Volume 34:Issue 1(2016)
• Page Start: 1
• Page End: 12
• Publication Date: 2016-01-02
• Subjects: C5-BPP -- radiolysis -- mass-spectrometry -- high resolution mass spectrometry -- multiple reaction monitoring; Solvent extraction -- Periodicals; Ion exchange -- Periodicals; 660.284248
• DOI: 10.1080/07366299.2015.1115694
• Languages: English
• ISSNs: 0736-6299

Abstract

ABSTRACT: The stability of solvents containing the C5-BPP (2, 6-Bis(5-(2, 2-dimethylpropyl)-1 H -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.