title: Separation of no-carrier-added rhenium from bulk tantalum by the sodium malonate-PEG aqueous biphasic system.
abstract: The aqueous biphasic system (ABS) involving sodium malonate-polyethylene glycol (PEG) phases has been applied for the first time for separation of no-carrier-added (183)Re (T1/2=70 d) from α-particle irradiated bulk tantalum target. The various ABS conditions were applied for investigating the separation by varying pH, temperature, PEG-molecular weight, concentration of salt. The extraction pattern was hardly affected by change in pH and the molecular weight of PEG. One step separation of nca (183)Re from Ta was achieved at the optimal conditions of (i) 50% (w/w) PEG-4000-2 M sodium malonate, 40 °C and (ii) 50% (w/w) PEG-4000-3 M sodium malonate, room temperature (27 °C).
authors.affiliation: Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India.
authors.forename: Binita
authors.initials: B
authors.lastname: Dutta
authors.affiliation: Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India. Electronic address: susanta.lahiri@saha.ac.in.
authors.forename: Susanta
authors.initials: S
authors.lastname: Lahiri
authors.affiliation: Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: B S
authors.initials: BS
authors.lastname: Tomar
mesh_terms: D008314:Malonates / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D011868:Radioisotopes / Q000302:isolation & purification*; D012211:Rhenium / Q000302:isolation & purification*; D013635:Tantalum / Q000737:chemistry*
chemical_list: D008314:Malonates; D011868:Radioisotopes; D011092:Polyethylene Glycols; D013635:Tantalum; D012211:Rhenium
keywords: Aqueous biphasic; No-carrier-added; PEG; Rhenium; Sodium malonate; Tantalum