Abstract
In case cation-exchange resins of H-Na and H-Ca forms are analyzed by DTA and TGA, desulfonationkes place only for H-form ion-exchange resins. Therefore, the authors took advantage of thisharacteristic behavior to study a quantitative determination method of free sulfonic group. Also, hey estimated separation factors SHNa and SHCa by this method, and confirmed that those values esulted from this method agreed with those obtained by the conventional methods.
