Remediation Using Actinide Chelators. Gopalan et al. [4] are working to design and synthesize organic chelators for selective binding of actinide ions from soils and waste streams. Their studies show that multidentate oxoligands such as hydroxamate, iminodiacetate, and hydroxypyridinones are potential candidates for binding actinide ions present in acidic, aqueous solutions. They have also identified and synthesized chelating agents for plutonium. These chelators contain either a flexible acyclic structural backbone or a rigid benzene spacer to which the ligands are attached. Specific application under the complex conditions relevant to environmental remediation strategies for actinides is in an early stage of development. Potential solubility problems, stability, and pH requirements exist that could limit the use of chelators.