Abstract: Four new chelating resins containing polythioether backbone and primary amino group inside chain were synthesized from poly(chloromethyl thiirane) by Gabriel reaction in this paper. The preparation conditions were optimized, and the sorption properties of these resins were thoroughly studied. It was found that these resins possessed high capacities for sorpting noble metal ions, especially for Au(Ⅲ) (5～7 mmol for per gram resin) and Ag⁺ (7～9 mmol for per gram resin), but weak sorbabilities for non noble metal ions, such as Fe ³⁺, Cu ²⁺ and Zn ²⁺ . They are expected to be used in separations and enrichments of noble metal ions.

Key words: Chelating resin, Poly(chloromethyl thiirane), Noble metal sorption, Gabriel reaction