ANALYSIS OF PHENOLIC COMPOUNDS IN EFFLUENT BY SOLID-PHASE EXTRACTION AND GAS CHROMATOGRAPHY MASS SPECTROMETRY WITH DIRECT ON-COLUMN BENZYLATION - SENSITIVE NEGATIVE ION CHEMICAL IONISATION GAS CHROMATOGRAPHY MASS SPECTROMETRY DETECTION OF PHENYL BENZ

摘要

A procedure for the extraction of eight phenolic compounds in effluent from various tertiary sewerage treatment plants in the Sydney area using a non-ionic polystyrene-divinylbenzene polymeric sorbent is described. Good recoveries were obtained for these phenols which differ widely in polarity. The performance of this new sorbent is superior to that of graphitised carbon black. The determination of the phenols was carried out by direct on-column derivatisation in GC with a recently developed reagent, 3,5-bis(trifluoromethyl)benzyldimethylphenylammonium fluoride (BTBDMAF). Benzyl derivatives of phenols allow very sensitive detection of phenols by GC-MS in the negative ion CI mode at ppt levels.