Sorption Characteristics and Chromatographic Separation of Y from Sr from Aqueous Media by Chelex-100 (Anion Ion Exchange) Packed Column.

There is growing demand for separation of Y carrier free from Sr coexisting to produce high purity Y essential for radiopharmaceutical uses. Thus, in this context the sorption profiles of Y and Sr from aqueous solutions containing diethylenetriaminepenta acetic acid (DTPA), ethylenediaminetetra-acetic acid (EDTA), acetic acid, citric acid, or NaCl onto Chelex-100 (anion ion exchange) solid sorbent were critically studied for developing an efficient and low-cost methodology for selective separation of Y from Sr ions (1.0 × 10 M).