Solid phase extraction of chlorinated phenolics in aqueous solution

✍ Scribed by Tânia M. Pissolatto; Elina B. Caramão; Ayrton F. Martins

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 525 KB
• Volume: 8
• Category: Article
• ISSN: 1040-7685
• DOI: 10.1002/(sici)1520-667x(1996)8:1<5::aid-mcs2>3.0.co;2-5

✦ Synopsis

The method which will be described is based on a pre-concentration of chlorinated phenolic water contaminations in a solid sorbent. These compounds were eluted, derivatized, extracted, and determined by gas chromatography using a nonpolar capillary column. The determination of 29 chlorinated phenols, guaiacols, catechols, syringols, and vanillins in aqueous standard solution was carried out by absorption on a XAD-4 polystyrene resin (solid phase extraction), followed by elution with methanol and diethyl ether. All the extracts obtained were analyzed by a GC/ECD and by a GC/MS. Gas 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 Modell-was used to confirm the identity of the chlorinated phenols. o 1996 John WiIey & Sons, Inc.