Indentification and quantification of mono-, di- and trihydroxybenzenes (phenols) at trace concentrations in seawater by aqueous acetylation and gas chromatographic—mass spectrometric analysis

摘要: A method is described that uses aqueous acetylation with acetic anhydride, solid-phase extraction (SPE) and concentration, gas chromatographic—mass spectrometric (GC-MS) analysis to identify quantify mono-, di- trihydroxybenzenes (phenols) at low concentrations in marine waste waters. Phenolic compounds water samples were buffered NaHCO3 directly acetylated anhydride. Phenol acetates then extracted using C18 SPE columns. The columns eluted the phenol concentrated analyzed by GC-MS. Detection of phenols ng 1−1 concentration range can be obtained 500 ml sample. large volume setup from which detection limits upper pg may obtained. was applicable a wide phenolic but not suitable for nitrophenols. Water several coastal environments wastewater treatment facilities this method. Phenol, cresols catechols most common identified. Concentrations ranged 2.5 370 these seawater sampled San Diego Bay, vicinity White's Point outfall off Pedro (Los Angeles area) outfalls Northern coast California near Eureka.