title: Studies on separation and purification of fission (99)Mo from neutron activated uranium aluminum alloy.
abstract: A new method has been developed for separation and purification of fission (99)Mo from neutron activated uranium-aluminum alloy. Alkali dissolution of the irradiated target (100mg) results in aluminum along with (99)Mo and a few fission products passing into solution, while most of the fission products, activation products and uranium remain undissolved. Subsequent purification steps involve precipitation of aluminum as Al(OH)3, iodine as AgI/AgIO3 and molybdenum as Mo-α-benzoin oxime. Ruthenium is separated by volatilization as RuO4 and final purification of (99)Mo was carried out using anion exchange method. The radiochemical yield of fission (99)Mo was found to be >80% and the purity of the product was in conformity with the international pharmacopoeia standards.
authors.affiliation: Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: Ankita
authors.initials: A
authors.lastname: Rao
authors.affiliation: Board of Radiation and Isotope Technology, Vashi, Navi Mumbai 400705, India.
authors.forename: Abhishek
authors.initials: A
authors.lastname: Kumar Sharma
authors.affiliation: Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: Pradeep
authors.initials: P
authors.lastname: Kumar
authors.affiliation: Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: M M
authors.initials: MM
authors.lastname: Charyulu
authors.affiliation: Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India. Electronic address: bstomar@barc.gov.in.
authors.forename: B S
authors.initials: BS
authors.lastname: Tomar
authors.affiliation: Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: K L
authors.initials: KL
authors.lastname: Ramakumar
mesh_terms: D000497:Alloys / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry*; D008982:Molybdenum / Q000302:isolation & purification*; D009501:Neutron Activation Analysis; D011854:Radiochemistry / Q000379:methods; D011868:Radioisotopes / Q000302:isolation & purification*; D013051:Spectrometry, Gamma; D014501:Uranium / Q000737:chemistry*
chemical_list: D000497:Alloys; D011868:Radioisotopes; D014501:Uranium; D008982:Molybdenum; D000535:Aluminum
keywords: (99)Mo; Anion exchange; Fission products; Radiochemical separation; Uranium–aluminum alloy; α-Benzoin oxime