Determination of Trace phenol in water with solid-phase microextraction-gas chromatography-mass spectrometry

It is meaningful to find out an effective method to analyze phenol.Trace phenol in tap water and paper mill waste water was absorbed with solid-phase microextraction(SPME) and was analyzed with gas chromatography coupled with mass spectrometry(GC-MS).The performance of the fiber was good as the phenol was extracted directly without derivatization and then analyzed by GC-MS with a polar capillary column.The parameters,such as extraction fiber,extraction time and extraction temperature,which contributed to the good results,were subsequently studied.The satisfactory results were obtained using fiber 100 μm Polydimethylsiloxane(PDMS),100 mL of sample volume,with the addition of saturated salt(NaCl),pH 2~3 and direct extraction at 90 ℃ and stirred,for 40 min.The detection limit was 0.5 μg/L and the correlation coefficient(0.9984) was calculated in the linearity range of 4.9～200 μg/L.