固相萃取气质联用仪检测生活饮用水中环氧氯丙烷

Solid Phase Extraction and GC-MS Detection in the Determination of Epichlorohydrin in Drinking Water

目的建立生活饮用水中环氧氯丙烷的检测方法,满足《生活饮用水卫生标准》(GB 5749-2006)的要求以及实际水质检测的需求。方法生活饮用水中环氧氯丙烷经过固相萃取浓缩后,高弹石英毛细管柱分离,气质联用仪测定。结果该方法RSD均<10%,加标回收率91%～104%,最低检出限为0.02μg/L。结论经上述方法检测的生活饮用水中环氧氯丙烷,比国家标准方法中经填充柱分离,FID检测器检测的结果灵敏度高,特异性好,能满足《生活饮用水卫生标准》(GB 5749-2006)的要求以及实际水质检测的需求。

Objectives To establish determination methods for epichlorohydrin in drinking water to meet the demands in ＂Health Standards for Drinking Water＂ （GB 5749 -2006 ） and in testing the quality of actual water samples. Methods Epichlorohydrin in drinking water samples was determined by GC-MS after concentrated by solid-phase extraction and separated by high elastic quartz capillary column. Results The results of epichlorohydrin tested by this method were good, the RSD was 〈 10% , the recovery rate was 91% - 104% , and the minimum detectable limit was 0.02 μg/L. Conclusions The solid-phase extraction and GC-MS detection method was in higher sensitivity and good specificity, which was better than the standard column separation and FID detection method. The GC-MS method can satisfy the demands of the ＂Health Standards for Drinking Water＂ （ GB 5749 - 2006 ） and for testing the quality of actual water samples.