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Microfluidics-Based Separation of Actinium-225 From Radium-225 for Medical ApplicationsDavern, Sandra, O’Neil, David, Hallikainen, Hannah, O’Neil, Kathleen, Allman, Steve, Millet, Larry, Retterer, Scott, Doktycz, Mitchel, Standaert, Robert, Boll, Rose, Van Cleve, Shelley, DePaoli, David, Mirzadeh, Saed 13 August 2019 (has links)
Separation of 225Ra (t1/2 = 15 d) from its daughter isotope 225Ac (t1/2 = 10 d) is necessary to obtain pure 225Ac for cancer alpha-therapy. In this study, microscale separation of 225Ra from its daughter 225Ac using BioRad AG50X4 cation exchange resin was achieved with good reproducibility across microdevices, and ≥90% purity was achieved for 225Ac, which is comparable to conventional chromatography. These results indicate the potential for greater use of microfluidics for biomedical radiochemistry. The modularity of the system and its compatibility with different resins allows for quick and easy adaptation to the various needs of a separation campaign.
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