Abstract

A new method has been developed for the isolation of 223,224,225Ra, in high yield and purity, from a proton irradiated 232Th matrix. Herein we report an all-aqueous process using multiple solid-supported adsorption steps including a citrate chelation method developed to remove >99.9% of the barium contaminants by activity from the final radium product. A procedure involving the use of three columns in succession was developed, and the separation of 223,224,225Ra from the thorium matrix was obtained with an overall recovery yield of 91 ± 3%, average radiochemical purity of 99.9%, and production yields that correspond to physical yields based on previously measured excitation functions.

Details

Title
Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix
Author
Mastren, Tara 1 ; Radchenko, Valery 2 ; Owens, Allison 3   VIAFID ORCID Logo  ; Copping, Roy 3 ; Boll, Rose 3   VIAFID ORCID Logo  ; Griswold, Justin R 3 ; Mirzadeh, Saed 3 ; Wyant, Lance E 3 ; Brugh, Mark 1 ; Engle, Jonathan W 4 ; Nortier, Francois M 1 ; Birnbaum, Eva R 1 ; John, Kevin D 1 ; Fassbender, Michael E 1 

1  Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, USA 
2  Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, USA; TRIUMF, Vancouver, Canada 
3  Nuclear Security and Isotope Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA 
4  Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, USA; University of Wisconsin, Madison, WI, USA 
Pages
1-7
Publication year
2017
Publication date
Aug 2017
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-017-08506-9
ProQuest document ID
1957222824
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.