A comparison of the y-Radiolysis of TODGA and T(EH)DGA using UHPLC-ESI-MS analysis

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

doi:10.1080/07366299.2015.1012885

Title: A comparison of the y-Radiolysis of TODGA and T(EH)DGA using UHPLC-ESI-MS analysis

Journal Article · Mon Apr 27 00:00:00 EDT 2015 · Solvent Extraction and Ion Exchange

DOI:https://doi.org/10.1080/07366299.2015.1012885· OSTI ID:1184759

Zarzana, Christopher A. ^[1]; Groenewold, Gary S. ^[1]; Mincher, Bruce J. ^[1]; Mezyk, Stephen P. ^[2]; Wilden, Andreas ^[3]; Schmidt, Holger ^[3]; Modolo, Giuseppe ^[3]; Wishart, James F. ^[4]; Cook, Andrew R. ^[4]

Idaho National Lab. (INL), Idaho Falls, ID (United States)
California State Uni
Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung-Nukleare Entsorgung und Reaktorsicherheit (IEK-6), Jülich (Germany)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Solutions of the diglycolamide extractants TODGA and T(EH)DGA in n-dodecane were subjected to γ- irradiation in the presence and absence of an acidic aqueous phase. These solutions were then analyzed using UHPLC-ESI-MS to determine the rates of radiolytic decay of the two extractants neat and in contact with respect to the acidity of the contacted aqueous phase, as well as to identify radiolysis products. The presence or absence of an acidic aqueous phase was shown to have no influence on the measured decay rates, nor did the side-chain have an influence. A number of radiolysis products were identified, consistent with those previously identified for these two compounds using GC-MS. The identity of these radiolysis products suggests that the bonds most vulnerable to radiolytic attack are those in the dyglycolamide center of these molecules, and not on the side-chains. The agreement of these results with previous work using GC-MS indicates supports the further use of UHPLC-ESI-MS as a tool for studying diglycolamide extractant systems.

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Research Organization:: Idaho National Lab. (INL), Idaho Falls, ID (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC07-05ID14517; SC00112704

OSTI ID:: 1184759

Alternate ID(s):: OSTI ID: 1240715

Report Number(s):: INL/JOU-14-32985; BNL-111893-2016-JA

Journal Information:: Solvent Extraction and Ion Exchange, Journal Name: Solvent Extraction and Ion Exchange; ISSN 0736-6299

Publisher:: Taylor and FrancisCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 38 works

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Radiolytic degradation of hydrophilic PyTri ligands for minor actinide recycling Mossini, Eros; Macerata, Elena; Brambilla, Luigi Journal of Radioanalytical and Nuclear Chemistry, Vol. 322, Issue 3 https://doi.org/10.1007/s10967-019-06772-7	journal	September 2019
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