abstract |
A resin is provided for selectively binding to perchloride and related anions (e.g., TcO 4 − , ReO 4 − and I − ) in aqueous solution. The resin may take the form of microparticles or beads. The beads are prepared by cross-linking macromolecules such as hyperbranched PEI, and quaternizing the amines with hydrocarbon substituents. |