β-cyclodextrin-polyurethane polymer as solid phase extraction material for the analysis of carcinogenic aromatic amines

beta-Cyclodextrin-polyurethane (beta-CDPU) polymer was synthesized by the reaction of beta-cyclodextrin with hexamethylene diisocyanate in dry dimethylformamide and used as a sorbent for the solid phase extraction (SPE) of carcinogenic aromatic amines from water. The polymers were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry and particle size analysis. The separation and quantification was performed by Liquid chromatography with RP-C-18 column and diode array detection using standard arylamines for quantification. When compared with commercially available sorbents, beta-CDPU gave better recovery for the aromatic amines. From the variation of pH of the extractant from 4.0 to 8.5 recovery was highest at pH 8.5. The breakthrough volume has been ascertained to be 100 ml for 200 mg of the resin. The new SPE material offers better recovery and estimation of banned arylamines. (C) 2003 Elsevier B.V. All rights reserved.