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

Anna Fermvik (Institutionen för kemi- och bioteknik, Kärnkemi) ; Laurence Berthon ; Christian Ekberg (Institutionen för kemi- och bioteknik, Kärnkemi) ; Sofie Englund ; Teodora Retegan (Institutionen för kemi- och bioteknik, Kärnkemi) ; Nicole Zorz
Dalton Transactions (1477-9226). Vol. 32 (2009), p. 6421-6430.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: radiolysis, gamma-radiation, BTBP, separation, solvent extraction, actinides, lanthanides

Denna post skapades 2009-10-05. Senast ändrad 2015-11-05.
CPL Pubid: 99715


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Institutionen för kemi- och bioteknik, Kärnkemi (2005-2014)



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Radiolytic Degradation of BTBP type Molecules for Treatment of Used Nuclear Fuel by Solvent Extraction