【摘要】 目的探讨水中邻苯二甲酸酯的GC-MS测定法。方法采用Agilent6890GC-5973MS联用仪并选择离子检测方式测定了水中邻苯二甲酸酯犤邻苯二甲酸二甲酯(DMP),邻苯二甲酸二乙酯(DEP),邻苯二甲酸二丁酯(DBP),邻苯二甲酸二(2-乙基己基)酯(DEHP),邻苯二甲酸二正辛酯(DOP)犦浓度。结果DMP,DEP,DBP的检出限为0.3μg/L,DEHP和DOP的检出限为0.8μg/L。DMP,DEP,DBP,DEHP和DOP的加标回收率分别为71.7%,88.9%,96.0%,90.5%和76.2%。RSD分别为2.8%,9.0%,4.5%,4.3%,3.2%。结论GC-MS法适用于饮用水中邻苯二甲酸酯的测定。更多还原

【Abstract】 Objective To establish a determination method of phthalates in the drinking water used to monitor the pollution level of phthalates in the drinking water of Beijing. Methods 23 samples from drinking water plants in Beijing were determinated by GC-MS, using selective ion mode (SIM)with high sensitivity and internal standard quantitation method with high accuracy. Results In all samples, di(2-ethylhexyl) phthalate (DEHP) was detected out and the highest concentration was 24.5 μg/L, dibutyl phthalate (DBP) was detected out in 7 samples and the highest concentration was 11.1 μg/L, The other 3 kinds of phthalate were not detected out. The detection limit of DEHP and DOP was 8.0 μg/L, DMP, DEP, DBP was 0.3 μg/L, The recovery rate were 71.7%-96.0%, RSD were 2.8%-9.0%. Conclusion The main pollutants of phthalates are DEHP and DBP in drinking water of Beijing, GC-MS is suitable for determination of phthalates in drinking water.更多还原