A Comparison of the ?-Radiolysis of TODGA and T(EH)DGA Using UHPLC-ESI-MS Analysis

Zarzana, Chris A.; Groenewold, Gary S.; Mincher, Bruce J.; Mezyk, Stephen P.; Modolo, Giuseppe; Wildens, Andreas; Schmidt, Holgar; Wishart, James F.; Cook, Andrew R.

doi:10.1080/07366299.2015.1012885

Title: A Comparison of the ?-Radiolysis of TODGA and T(EH)DGA Using UHPLC-ESI-MS Analysis

Journal Article · Sun Mar 01 00:00:00 EST 2015 · Solvent Extraction and Ion Exchange

DOI:https://doi.org/10.1080/07366299.2015.1012885· OSTI ID:1186739

Zarzana, Chris A.; Groenewold, Gary S.; Mincher, Bruce J.; Mezyk, Stephen P.; Modolo, Giuseppe; Wildens, Andreas; Schmidt, Holgar; Wishart, James F.; Cook, Andrew R.

Solutions of TODGA and T(EH)DGA in n-dodecane were subjected to ?-irradiation in the presence and absence of an aqueous nitric acid phase and analyzed using UHPLC-ESI-MS to determine the rates of radiolytic decay of the two extractants, as well as to identify radiolysis products. The DGA concentrations decreased exponentially with increasing dose, and the measured degradation rate constants were uninfluenced by the presence or absence of an acidic aqueous phase, or by chemical variations in the alkyl side-chains. The DGA degradation was attributed to reactions of the dodecane radical cation, whose kinetics were measured for TODGA using picosecond electron pulse radiolysis to be k2 = (9.72 ± 1.10) × 109 M-1 s-1. The identified radiolysis products suggest that the bonds most vulnerable to radiolytic attack are those in the diglycolamide center of these molecules and not on the side-chains.

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Research Organization:: Idaho National Lab. (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: DOE - NE

DOE Contract Number:: DE-AC07-05ID14517

OSTI ID:: 1186739

Report Number(s):: INL/JOU-14-32985

Journal Information:: Solvent Extraction and Ion Exchange, Vol. 33, Issue 5; ISSN 0736-6299

Publisher:: Taylor and Francis

Country of Publication:: United States

Language:: English

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Gamma Radiolysis of TODGA and CyMe ₄ BTPhen in the Ionic Liquid Tri- n -Octylmethylammonium Nitrate Zsabka, Peter; Van Hecke, Karen; Wilden, Andreas Solvent Extraction and Ion Exchange, Vol. 38, Issue 2 https://doi.org/10.1080/07366299.2019.1710918	journal	January 2020
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11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
Radiolysis
TEHDGA
TODGA
UHPLC-MS

A Comparison of the γ-Radiolysis of TODGA and T(EH)DGA Using UHPLC-ESI-MS Analysis Zarzana, Christopher A.; Groenewold, Gary S.; Mincher, Bruce J. https://doi.org/10.6084/m9.figshare.1332513.v1 The current record is supplemented by this text	text	January 2015
A Comparison of the γ-Radiolysis of TODGA and T(EH)DGA Using UHPLC-ESI-MS Analysis Zarzana, Christopher A.; Groenewold, Gary S.; Mincher, Bruce J. https://doi.org/10.6084/m9.figshare.1332513.v2 The current record is supplemented by this text	text	January 2015
A Comparison of the γ-Radiolysis of TODGA and T(EH)DGA Using UHPLC-ESI-MS Analysis Zarzana, Christopher A.; Groenewold, Gary S.; Mincher, Bruce J. https://doi.org/10.6084/m9.figshare.1332513.v1 The current record is a newer version of this text	text	January 2015
A Comparison of the γ-Radiolysis of TODGA and T(EH)DGA Using UHPLC-ESI-MS Analysis Zarzana, Christopher A.; Groenewold, Gary S.; Mincher, Bruce J. https://doi.org/10.6084/m9.figshare.1332513 The current record is supplemented by this text	text	January 2015