SOLID-PHASE EXTRACTION OF CHLORINATED PHENOLICS IN AQUEOUS-SOLUTION

The method which will be described is based on a pre-concentration of chlorinated phenolic water contaminations in a solid sorbent. These co mpounds were eluted, derivatized, extracted, and determined by gas chr omatography using a nonpolar capillary column. The determination of 29 chlorinated phenols, guaiacols, catechols, syringols, and vanillins i n aqueous standard solution was carried out by absorption on a XAD-4 p olystyrene resin (solid phase extraction), followed by elution with me thanol and diethyl ether. All the extracts obtained were analyzed by a GC/ECD and by a GC/MS. Cas chromatography interfaced with an Electron Capture Detector (GC/ECD) was performed in a VARIAN-3400 instrument. Mass spectral abundance data for the characteristic ions of the acetyl derivatives-obtained by GC/MS/HP 5988A (Electron Impact Model)-was us ed to confirm the identity of the chlorinated phenols. (C) 1996 John W iley & Sons, Inc.