2011 年 127 巻 10_11 号 p. 656-661
The selective separation and recovery method of gold(Au) was developed with polymer bead containing epoxy group. Under strongly acidic condition at pH 1 or less, Au was adsorbed 82% to polymer bead. Namely, it is Au 3.2mg per polymer bead one gram. And, Au was desorbed from polymer bead about 90% under buffer solution of the pH 10 at room temperature or acidic condition using 0.5M hydrochloric acid solution at 80°C. Moreover, based on above experimental condition, Au was separated from other 64 kinds of ion contained at the same concentration of Au.