کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10560647 969739 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selective preconcentration of thorium in the presence of UO22+, Ce3+ and La3+ using Th(IV)-imprinted polymer
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Selective preconcentration of thorium in the presence of UO22+, Ce3+ and La3+ using Th(IV)-imprinted polymer
چکیده انگلیسی
We have prepared Th(IV) ion-imprinted polymers, which can be used for the selective preconcentration of Th(IV) ions, represented by uranium and lanthanides. N-methacryloyl-(l)-glutamic acid (MAGA) was chosen as the complexing monomer. In the first step, Th(IV) was complexed with MAGA and the Th(IV)-imprinted poly[ethylene glycol dimethacrylate-N-methacryloyl-(l)-glutamic acid] (Poly(MAGA-EDMA)) beads were synthesized by suspension polymerization. After that, the template Th(IV) ions were removed using 8.0 M HNO3 solution. The breakthrough capacity was 40.44 mg Th(IV)/g beads. The relative selectivity coefficients of imprinted beads were 68, 97 and 116 for UO22+, La3+ and Ce3+, times greater than non-imprinted matrix, respectively. The Th(IV)-imprinted beads could be used many times without decreasing their breakthrough capacities significantly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 67, Issue 3, 15 September 2005, Pages 640-645
نویسندگان
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