CU Resin

Cu Resin is used for the selective separation of copper metal ions, such as the nuclear medicine isotopes Cu-64 and Cu-67. The uptake on Cu Resin of metal ions representative of Zinc or enriched Nickel targets have been determined from various acid matrices.

Cu Resin selectively retains copper from pH 2 to 5 for HCl, HNO3 and H2SO4 over all the tested cations, including Ni and Zn. In HCl and H2SO4 media, iron may also be partially coextracted. The Cu/Fe selectivity decreases as pH increases. The Cu/Fe separation factor is about 1000 at pH 2 and about 70 at pH 5.

Cu uptake is generally high at pH values greater than 2, while Cu can be easily eluted with mineral acids of concentrations greater than 0.1 moles/L.

The main application of the Cu resin is the separation of Cu-64 or Cu-67 from irradiated Zn or Ni targets. High amounts of both elements interfere only slightly with the Cu uptake in HCl at pH 2. Even at loadings of 1g of Ni or Zn per g of Cu resin the Dw(Cu) remains greater than 1000.

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