Affiliation:
1. Nuclear Science and Technology Research Institute (NSTRI), P.O. Box: 11365-8486, Tehran, Iran
2. Department of Chemistry, Faculty of Science, Shahid Beheshti University, G. C., 1983963113, Tehran, Iran
Abstract
Abstract
Because of its favorable radionuclidic properties (pure beta emitter, E
βmax = 2.28 MeV,
T
1/2 = 64.1 h), the preparation of carrier free 90Y is of a great importance in radiopharmacy. Herein, we
report the synthesis, characterization, and application of a novel yttrium sorbent prepared on the basis of the ion-imprinting
concept. The ion-imprinted polymer (IIP) was prepared by atom transfer radical copolymerization of acryl amide (AAm, functional
monomer) and N,N′-methylenebisacrylamide (MBAAm) crosslinking agent in the presence of a complex of yttrium ions (template
ions) with a homemade chelator, i.e., 2,2-bis(2-bromo-2-methylpropanoate)propane-1,3-disuccinate (also as initiator). For elimination
of yttrium ions, which act as the template, the prepared particles were treated with 50% v:v HCl : H2O to
produce yttrium-imprinted polymeric sorbent. To control the imprinting effect, corresponding non-imprinted particles (NIP) were
prepared in a similar manner except that yttrium ions were not used. The synthesized chemicals for the preparation of the
chelator-initiator compound and the product itself were assessed in every step using 1H-NMR analysis. NIP and YIP were
subjected to X-ray diffraction (XRD), infra-red spectroscopy (IR) and BET surface area analysis for characterization
studies. Sorption/desorption studies were conducted, and the effects of potentially interfering ions, such as Sr2+ (α = 119.69) and Zr4+ (α = 73.01) in presence of radio-yttrium, were investigated (particle size:
50–100 μm, resultant recovery of > 99% within 60 min and a capacity of 33.33 mg
Y(III) per gram of sorbent). The results showed that amounts of radio-yttrium as low as 250 μg could be
extracted effectively with high radionuclidic and radiochemical purity from macro-gram amounts of strontium.
Subject
Physical and Theoretical Chemistry
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献