Radiolysis of solvents containing C5-BTBP: identification of degradation products and their dependence on absorbed dose and dose rate
Journal article, 2009

Solvents intended for the separation of trivalent actinides from trivalent lanthanides in spent nuclear fuel have been irradiated with gamma-radiation. The solvents initially contained 0.005 M C5-BTBP dissolved in either hexanol or cyclohexanone and they were exposed to doses up to 20 kGy. Identification of degradation products was done using atmospheric pressure chemical ionization-mass spectrometry (APCI-MS). Structures were suggested for a number of degradation products and the relative intensity of the peaks in the MS spectra was estimated. It was clear that the content of the original molecule, C5-BTBP, decreased with dose, while the content of the various degradation products increased. It was also shown that both the choice of diluent and the dose rate (Gy/h) affect the amount of degradation products formed. A degradation scheme was proposed for the radiolytic degradation of C5-BTBP.

separation

actinides

solvent extraction

BTBP

lanthanides

radiolysis

gamma-radiation

Author

Anna Fermvik

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Laurence Berthon

Christian Ekberg

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Sofie Englund

Teodora Retegan

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Nicole Zorz

Dalton Transactions

1477-9226 (ISSN) 1477-9234 (eISSN)

Vol. 32 6421-6430

Subject Categories

Chemical Engineering

Chemical Sciences

More information

Created

10/7/2017