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Title: Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix

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.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3];  [3];  [2];  [2];  [2];  [2];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Chemistry Division
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1396129
Alternate Identifier(s):
OSTI ID: 1491311
Report Number(s):
LA-UR-17-23916
Journal ID: ISSN 2045-2322
Grant/Contract Number:  
AC52-06NA25396; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; experimental nuclear physics; nuclear chemistry

Citation Formats

Mastren, Tara, Radchenko, Valery, Owens, Allison, Copping, Roy, Boll, Rose Ann, Griswold, Justin R., Mirzadeh, Saed, Wyant, Lance E., Brugh, Mark, Engle, Jonathan W., Nortier, Francois M., Birnbaum, Eva R., John, Kevin D., and Fassbender, Michael E. Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix. United States: N. p., 2017. Web. doi:10.1038/s41598-017-08506-9.
Mastren, Tara, Radchenko, Valery, Owens, Allison, Copping, Roy, Boll, Rose Ann, Griswold, Justin R., Mirzadeh, Saed, Wyant, Lance E., Brugh, Mark, Engle, Jonathan W., Nortier, Francois M., Birnbaum, Eva R., John, Kevin D., & Fassbender, Michael E. Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix. United States. doi:10.1038/s41598-017-08506-9.
Mastren, Tara, Radchenko, Valery, Owens, Allison, Copping, Roy, Boll, Rose Ann, Griswold, Justin R., Mirzadeh, Saed, Wyant, Lance E., Brugh, Mark, Engle, Jonathan W., Nortier, Francois M., Birnbaum, Eva R., John, Kevin D., and Fassbender, Michael E. Tue . "Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix". United States. doi:10.1038/s41598-017-08506-9. https://www.osti.gov/servlets/purl/1396129.
@article{osti_1396129,
title = {Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix},
author = {Mastren, Tara and Radchenko, Valery and Owens, Allison and Copping, Roy and Boll, Rose Ann and Griswold, Justin R. and Mirzadeh, Saed and Wyant, Lance E. and Brugh, Mark and Engle, Jonathan W. and Nortier, Francois M. and Birnbaum, Eva R. and John, Kevin D. and Fassbender, Michael E.},
abstractNote = {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.},
doi = {10.1038/s41598-017-08506-9},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {8}
}

Journal Article:
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Cited by: 4 works
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Figures / Tables:

Figure 1 Figure 1: Cation Exchange Chromatography.

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    Works referencing / citing this record:

    Microfluidics-based separation of actinium-225 from radium-225 for medical applications
    journal, May 2019


    Microfluidics-based separation of actinium-225 from radium-225 for medical applications
    journal, May 2019


    The coordination chemistry of Cm III , Am III , and Ac III in nitrate solutions: an actinide L 3 -edge EXAFS study
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    Isotope harvesting at FRIB: additional opportunities for scientific discovery
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    Selective biosorption of thorium (IV) from aqueous solutions by ginkgo leaf
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    Optimization of Cation Exchange for the Separation of Actinium-225 from Radioactive Thorium, Radium-223 and Other Metals
    journal, May 2019


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