Separating e.g. lead and silver, from coins, comprises dissolving metals in acid solution, and separating metals by ion exchange chromatography that is carried out against ion with acid as eluent and synthetic resin as stationary phase

摘要

The method comprises: dissolving the metals in an acid solution, where the salts of the metals to be separated are soluble; and separating the metals by ion exchange chromatography, where chromatography is carried out against the ion with the acid as eluent and a cation-exchange synthetic resin as the stationary phase. The ion is a hydrogen ion (H +>). The acid has a concentration of 4-5 N. The process is carried out without rinsing step.