cation-exchange resin

Krasnokutskaya, Alexei Tretyakov, Ho Hwang, Ki-Whan Chi. Sulfonic Acid Based Cation-Exchange Resin: A Novel Proton Source for One-Pot Diazotization-Iodination of Aromatic

聚苯乙烯磺酸盐（英语：Polystyrene sulfonate），一种阳离子交换树脂（英语：cation-exchange resin），通常使用Na+作为抗衡离子。

that contains 2.5 mg/mL of amphetamine base. The product uses an ion exchange resin to achieve extended release of the amphetamine base. 智力測驗結果與專注力有關，詳見注意力不足過動症#智力