Sanguthai, Sureerat, & Jintana Klamtet. " Preconcentration and Determination of Cadmium in Natural Water using Amberlite XAD-4/4-(2- Pyridylazo) Resorcinol Resin Prior to Flame Atomic Absorption Spectrometric Detection." Naresuan University Journal: Science and Technology (NUJST) [Online], 23.2 (2015): 8-20. Web. 27 Apr. 2024