Resin Stability and Reusability.The stability of HAPTSCloaded Amberlite XAD-2 was studied in acid (1.0-6.0 mol L
-1
HNO3). It was shaken with acid solutions of varying concentrations for 4 h and filtered. The solid was washed with distilled
water until free from acid and air-dried, and its sorption capacity
was determined using a batch method. The sorption capacity
of the acid-treated resin was found to be similar (variation,