The adsorption of thorium was studied using a polyrotaxane,which was obtained by the reaction of PPG- NH2 and 6 - β - CD. IR, HNMR and TG was used to analyze the experimental mate - rials to confirm the reliability of the synthetic material, The adsorption of were examined as a func - tion of the contact time, pH and adsorbent dose using batch adsorption experiments. The experim - ental results showed that the optimum conditions were as follow: pH = 3.5, contact time is 80 min and adsorbent dose is 20 mg. The e...