Abstract: Disclosed are chelating co-polymer compositions that are soluble in aqueous media and chelate essential metals, methods of preparation and uses thereof. The chelating compositions are comprised of two or more different monomers, at least one of which possesses metal binding or metal chelating activity. The chelating compositions are synthesized by reversible addition-fragmentation transfer (RAFT) polymerization with the aid of a suitable RAFT-mediating agent. Also described are chelating compositions that comprise hydroxypyridinone chelating groups. The ability of the chelating compositions to bind metals affects the activity of a living cells and organisms, which require the metals for cellular functions.

Abstract: Disclosed are chelating co-polymer compositions that are soluble in aqueous media and chelate essential metals, methods of preparation and uses thereof. The chelating compositions are comprised of two or more different monomers, at least one of which possesses metal binding or metal chelating activity. The chelating compositions are synthesized by reversible addition-fragmentation transfer (RAFT) polymerization with the aid of a suitable RAFT-mediating agent. Also described are chelating compositions that comprise hydroxypyridinone chelating groups. The ability of the chelating compositions to bind metals affects the activity of a living cells and organisms, which require the metals for cellular functions.

Abstract: Disclosed are chelating co-polymer compositions that are soluble in aqueous media and chelate essential metals, methods of preparation and uses thereof. The chelating compositions are comprised of two or more different monomers, at least one of which possesses metal binding or metal chelating activity. The chelating compositions are synthesized by reversible addition-fragmentation transfer (RAFT) polymerization with the aid of a suitable RAFT-mediating agent. Also described are chelating compositions that comprise hydroxypyridinone chelating groups. The ability of the chelating compositions to bind metals affects the activity of a living cells and organisms, which require the metals for cellular functions.

Abstract: The present invention relates to the decontamination of soil and the like and, in particular, soils which are contaminated with metal as a result of the activities of human beings. The invention provides a physical and a chemical means for treating soil aggregate so as to obtain a product aggregate having a relatively low metal content. The physical means is characterized by the classification of a soil aggregate into portions of differing size and metal content. The chemical means is characterized by contacting a soil aggregate with an aqueous lixiviant comprising an organic acid component to lift metal from the aggregate. The physical and chemical means may be used in a combined process for decontaminating soil aggregate.

Abstract: A method for removing mercury and other related metals such as cadmium, zinc, copper, silver, from a liquid medium. This method comprises the step of contacting the liquid medium with an insoluble composition comprising an suitable insoluble carrier and a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of the carrier.

Abstract: An insoluble composition for removing mercury from a liquid medium comprises a suitable insoluble carrier and a cysteine residue convalently fixed at the nitrogen atom thereof to the surface of the carrier.

Abstract: The present invention relates to insoluble compositions, which are capable of removing metal (e.g. selectively) from solution (e.g. Fe.sup.3+ from a liquid nutrient medium so as to lower the Fe.sup.3+ content to less than 0.1 .mu.M); the insoluble compositions comprise: a suitable insoluble carrier and organic co-ordinating sites covalently fixed to the surface of said carrier, said co-ordinating sites being capable of chelating Fe.sup.3+, Th.sup.4+ and/or UO.sub.2.sup.2+.

Abstract: The present invention relates to insoluble compositions, which are capable of removing metal (e.g. selectively) from solution (e.g. Fe.sup.3+ from a liquid nutrient medium so as to lower the Fe.sup.3+ content to less than 0.1 .mu.M); the insoluble compositions comprise: a suitable insoluble carrier and organic co-ordinating sites covalently fixed to the surface of said carrier, said co-ordinating sites being capable of chelating Fe.sup.3+, Th.sup.4+ and/or UO.sub.2.sup.2+.

Abstract: The present invention relates to insoluble compositions, which are capable of removing metal (e.g. selectively) from solution (e.g. Fe.sup.3+ from a liquid nutrient medium so as to lower the Fe.sup.3+ content to less than 0.1 .mu.M); the insoluble compositions comprise: a suitable insoluble carrier and organic co-ordinating sites covalently fixed to the surface of said carrier, said co-ordinating sites being capable of chelating Fe.sup.3+, Th.sup.4+ and/or UO.sub.2.sup.2+.