Radiolysis of solvents containing C5-BTBP: identification of degradation products and their dependence on absorbed dose and dose rate
Artikel i vetenskaplig tidskrift, 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

Författare

Anna Fermvik

Chalmers, Kemi- och bioteknik, Kärnkemi

Laurence Berthon

Christian Ekberg

Chalmers, Kemi- och bioteknik, Kärnkemi

Sofie Englund

Teodora Retegan

Chalmers, Kemi- och bioteknik, Kärnkemi

Nicole Zorz

Dalton Transactions

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

Vol. 32 6421-6430

Ämneskategorier

Kemiteknik

Kemi