Reuse of decayed tellurium dioxide target for production of iodine-131
Tóm tắt
Iodine-131 was generated by irradiation of natural tellurium dioxide in a nuclear reactor. After irradiation the tellurium dioxide was transferred to hot cell and heated in a quartz furnace at ~700 °C. The Iodine-131 was distilled and collected in carbonate/bicarbonate buffer and used for thyroid cancer patients. The tellurium dioxide used was >99 % pure. During nuclear reaction nanogram tellurium was consumed to produce 131I, although significant loss of target material may occur in heating process. In dry distillation technique no chemical was added to irradiated target material. After 131I separation tellurium dioxide was decayed for 8 years in radioactive waste management facility. The decayed TeO2 was recovered, melted and crushed for desired mesh size. The TeO2 was sealed in Al capsule for re-irradiation purposes. The separation of 131I was carried out via dry distillation. The purity and yield of 131I separated from both of the irradiated new and irradiated re-used tellurium dioxide targets were comparable.
Tài liệu tham khảo
IAEA Nuclear Data Services, NuDat 2.5, www.nds.iaea.org
IAEA (2003) Iodine-131, manual for reactor produced radioisotopes IAEA-TECDOC-1340, IAEA, Vienna, pp 82–115
Mondino AV, Cols HJ, Cristini PR, Furnari JC (1999) J Radioanal Nucl Chem 240:731
Siri S, Mondino AV (2005) J Radioanal Nucl Chem 266:317
Bestagno MF, Pagliaini R, Maira G, Terzi A (1981) J Radioanal Chem 65:239
Yassine T, Bakir MA, Shanan S, AL-Asaad M (2003) J Radioanal Nucl Chem 258(3):635
Kudelin BK, Gromova EA, Gavrilina LV, Solin LM (2001) Appl Radiat Isot 54:383
International Atomic Energy Agency (2009) Cyclotron produced radionuclides: physical characteristics and production methods. Technical Reports Series No. 468, International Atomic Energy Agency Vienna
Mahunka I, Andó L, Mikecz P, Tcheltsov AN, Suvorov IA (1996) J Radioanal Nucl Chem 213(2):135
Abbas S, Mushtaq A, Qazi QM (2013) J Radioanal Nucl Chem 295:197
Aungurarat G (2003) Iodine-131 (131I53) dry distillation method, alternate procedure, manual for reactor produced radioisotopes IAEA-TECDOC-1340, IAEA, Vienna, p. 108