caa a22 4500 445803282 CHVBK 20180317145148.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10337-011-2113-4 doi (NATIONALLICENCE)springer-10.1007/s10337-011-2113-4 Polymer Embedded Nanocrystalline Titania: A New Generation Sorbent for the Separation of 77As from Ge for Biomedical Applications [Elektronische Daten] [Rubel Chakravarty, Ramu Ram, K. Jagdeesan, Meera Venkatesh, Ashutosh Dash] The present work demonstrates the utility of polymer embedded nanocrystalline titania (TiP) as a new, accessible and viable solid sorbent for the chromatographic separation of high specific activity 77As from neutron irradiated natural GeO2. Experimental parameters such as distribution ratios (K d), equilibrium sorption capacity, breakthrough capacity and separation yields were determined. A two-step ion-exchange procedure was developed to avail 77As, from irradiated Ge in alkaline medium. The first step involved removal of the bulk Ge from 77As by selective sorption of Ge ions on a TiP column at pH 13. Subsequently, the effluent solution containing 77As was further purified and concentrated by sorption on a small TiP column at pH 10. 77As could be eluted from the second column in 2-3mL of 0.1M NaOH solution with >80% radiochemical yield. The 77As obtained by this method was found to have insignificantly small level of radiocontaminants. Springer-Verlag, 2011 Column liquid chromatography nationallicence 77As from Ge nationallicence Nanocrystalline titania nationallicence Radiochemical separation nationallicence Radionuclide therapy nationallicence Chakravarty Rubel Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut Ram Ramu Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut Jagdeesan K. Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut Venkatesh Meera Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut Dash Ashutosh Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut Chromatographia Springer-Verlag 74/7-8(2011-10-01), 531-540 0009-5893 74:7-8<531 2011 74 10337 https://doi.org/10.1007/s10337-011-2113-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10337-011-2113-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chakravarty Rubel Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Ram Ramu Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Jagdeesan K. Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Venkatesh Meera Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Dash Ashutosh Radiopharmaceuticals Division, Bhabha Atomic Research Centre, 400085, Mumbai, India aut NATIONALLICENCE 773 0- Chromatographia Springer-Verlag 74/7-8(2011-10-01), 531-540 0009-5893 74:7-8<531 2011 74 10337 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer