首页|Rapid separation of americium from complex matrices using solvent impregnated triazine extraction chromatography resins
Rapid separation of americium from complex matrices using solvent impregnated triazine extraction chromatography resins
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NSTL
Elsevier
Several novel extraction chromatography resins (EXC) have been synthesised by solvent impregna-tion of the triazine ligands 6,6'-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydrobenzo[1,2,4]triazin-3-yl)-2,2'- bipyridine (CyMe4BTBP) and 2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-benzo[1,2,4]triazin-3-yl)-1,10-phenanthroline (CyMe(4)BTPhen) into Amberlite XAD7 and Amberchrom CG300 polymer supports. The resins have been physically characterised by a suite of spectroscopic, analytical and imaging techniques. The resins have also been evaluated in terms of their ability to selectively extract americium from com-plex matrices intended to simulate those typical of spent nuclear fuel raffinate, environmental samples and nuclear forensics samples. The resins have been compared with previously reported attempts to gen-erate EXC resins based on CyMe4BTBP and CyMe(4)BTPhen. Previously reported resins all rely on complex synthesis for the formation of a covalent bond between extractant and support by contrast with the sim-pler solvent impregnation method reported here. The Amberchrom supported CyMe4BTBP resin achieved a weight distribution ration (D-Am) of 170 within 60 min and a decontamination factor (DF) of > 10 0 0 for americium over lanthanides by column chromatography. The Amberchrom CyMe(4)BTPhen resin achieved a D-Am of 540 within 30 min and a DF for americium from lanthanides of 60-160. (c) 2022 Elsevier B.V. All rights reserved.
NSTL
Elsevier
