Solvent impregnated resins (SIR) containing di-(2-ethylhexyl)-phosphoric acid (DEHPA) were prepared by adsorption of the organophosphorous extractant into Amberlite XAD2 polymeric macroporous adsorbent. Extractant adsorption on the polymer was studied as a function of both the nature of the organic solution and the extractant concentration used. The retention and interactions of the extractant on the polymeric matrix was studied by FTIR spectroscopy.