A novel chelating resin, crosslinking polystyrene-supported glucosamine (PS-GA), was prepared and its structure was confirmed by FTIR, elemental analysis, and X-ray photoelectron spectroscopy. The adsorption properties of PS-GA for Au(111) were investigated. PS-GA resin possessed excellent enriching property to Au(111) ions and adsorption proportion E% Could reach to about 90 shortly after 3 h. The adsorption dynamics of Au(111) showed that the adsorption was controlled by liquid film diffusion and the apparent activation energy E-a was 1.2.91 kJ mol(-1). Both Langmuir model and Freundlich model could describe the isothermal process of Au(111), and Delta G, Delta H, Delta S values were Calculated. The mechanism of adsorption for Au(III) was confirmed by FTIR, SEM, and XPS. The results showed that redox reaction Occurred and both coordination and ion-exchange existed simultaneously in the adsorption. (c) 2006 Wiley Periodicals, Inc.