气相色谱-质谱法测定饮用水中16种邻苯二甲酸酯类化合物

摘要

To explore the kinds and levels of phthalates pollutants in drinking water, a liquid-liquid extraction gas chromatography mass spectrometry method was developed and validated for the determination phthalates in drinking water. Phthalates in drinking water were extracted with hexane and transferred to capillary column for gas chromatographic separation and mass spectrometic detection in selective ion monitoring mode (SIM).Sixteen phthalates can be separated by this method. The limits of detection were less than O.2μg/L. The recoveries were 85.5％～110.2％ ,and the relative standard deviations were 0.35％～1.94％.%为了解我国饮用水中邻苯二甲酸酯类化合物污染状况,采用液液萃取气相色谱-质谱法测定三个小瓶水、两个大桶水、五个自来水中邻苯二甲酸酯类化合物的含量;采用正己烷提取后,气相色谱-质谱分析,选择离子扫描(SIM).该方法能有效分离16种邻苯二甲酸酯类化合物,检出限均＜0.2μg/L,加标回收率在85.5%～110.2%,相对标准偏差0.35%～1.94%.