Determination of epichlorohydrin in drinking water by headspace solid-phase microextraction coupled with gas chromatography/mass spectrometry
Objective To establish a method of automatic headspace solid-phase microextraction(HS-SPME)coupled with gas chromatography/mass spectrometry(GC/MS)for the determination of epichlorohydrin in drinking water.Methods The 80 μm DVB/Carbon WR/PDMS was used as SPME fiber,with the condition of 250 r/min shaking,an equilibration time of 15 minutes at 35 ℃,a headspace extraction time of 15 minutes,and desorption at 250℃ for 5 minutes,and then the compound was separated by a DB-624 chromatographic column,detected by a mass spectrometer,and quantified by the external standard method.Results Epichlorohydrin had good linearity in the range of 0.2-2.0 μg/L(r=0.999 2).This method had a detection limit of 0.03 μg/L,a quantification limit of 0.09 μg/L,a relative standard deviation of 2.2％-4.6％,and a recovery rate of 95.3％-102.8％.Conclusion The method is simple and convenient and can be used for the determination of epichlorohydrin in drinking water.
epichlorohydrinsolid-phase microextraction(SPEM)drinking water
万方数据
维普
