液液萃取/固相萃取——气相色谱法测定水中酞酸酯类化合物  

Determination of PAEs in water by SPE/LLE-GC

作　　者：李洁 郭丽 张丹 Li Jie;Guo Li;Zhang Dan(Henan Ecological Environment Monitoring Center,Zhengzhou 450000,China)

机构地区：[1]河南省生态环境监测中心河南省环境监测技术重点实验室,河南郑州450000

出　　处：《山东化工》2020年第21期95-97,共3页Shandong Chemical Industry

摘　　要：采用液液萃取/固相萃取-气相色谱法测定水中6种酞酸酯类化合物,通过优化萃取条件发现,液液萃取时以10 mL二氯甲烷作为萃取剂、在酸性条件下萃取效果较好,固相萃取时使用C18固相萃取柱、以8 mL二氯甲烷作为洗脱剂、在pH为2的条件下萃取效果较好。按照优化后的萃取条件进行实验,液液萃取空白水样的加标回收率为60.6%~118.4%,实际水样的加标回收率为62.8%~120%;固相萃取空白水样的加标回收率为66.8%~120%,实际水样的加标回收率为66.8%~119%。six kinds of PAEs in water were determined by gas chromatography with the liquid liquid extraction/solid phase extraction in this research.The optimal conditions of extraction were discussed.The results showed that the liquid-liquid extraction effect was better when 10 mL dichloromethane was used as extractant under acidic conditions.The results showed that the solid phase extraction was better when using C18 solid phase extraction column and 8 mL dichloromethane was used as eluent under pH=2.The experiment was carried out according to the optimized extraction conditions.The standard recovery of blank water sample is 60.6%~118.4%and the standard recovery of actual water sample is 62.8%~120%by LLE.The standard recovery of blank water sample is 66.8%~120%and the standard recovery of actual water sample is 66.8%~119%by SPE.

关 键 词：酞酸酯类 液液萃取 固相萃取 气相色谱法 

分 类 号：X830.2[环境科学与工程—环境工程]