| Autor: |
Tara Mastren, Valery Radchenko, Allison Owens, Roy Copping, Rose Boll, Justin R. Griswold, Saed Mirzadeh, Lance E. Wyant, Mark Brugh, Jonathan W. Engle, Francois M. Nortier, Eva R. Birnbaum, Kevin D. John, Michael E. Fassbender |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2045-2322 |
| DOI: |
10.1038/s41598-017-08506-9 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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