液液萃取—GC-MS法同时测定石化废水中双酚A和邻苯二甲酸二乙酯  

Simultaneous determination of bisphenol A and diethyl phthalate in petrochemical wastewater by liquid-liquid extraction-gas chromatography-mass spectrometry

作　　者：陈婷婷[1,2,3] 席宏波 周岳溪[2,3] 章丽萍 CHEN Tingting;XI Hongbo;ZHOU Yuexi;ZHANG Liping(School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Research Center of Water Pollution Control Technology,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]中国环境科学研究院水污染控制技术研究中心,北京100012 [3]中国环境科学研究院环境基准与风险评估国家重点实验室,北京100012

出　　处：《化工环保》2018年第6期744-749,共6页Environmental Protection of Chemical Industry

基　　金：国家水体污染控制与治理科技重大专项课题(2017ZX07402-002)

摘　　要：建立了液液萃取(LLE)—气相色谱-质谱(GC-MS)法同时测定石化废水中双酚A(BPA)和邻苯二甲酸二乙酯(DEP)的新方法,对液液萃取条件进行了优化。最佳的液液萃取条件为:萃取剂为乙酸乙酯,水样调成酸性(pH<2),每次加入萃取剂0.1 mL/mL、盐析剂NaCl 0.1 g/mL,萃取次数为6次,每次萃取时间为2 min。实验结果表明:在质量浓度1～100 mg/L的范围内,BPA和DEP测定标准曲线的线性关系良好;BPA和DEP的检出限(LOD)分别为5.18μg/L和0.89μg/L,定量限(LOQ)分别为17.11μg/L和2.96μg/L,回收率为81.4%～124.9%,相对标准偏差(RSD)(n=7)小于5.5%。A method of liquid-liquid extraction(LLE)coupled with gas chromatography-mass spectrometry(GC-MS)for simultaneous determination of bisphenol A(BPA)and diethyl phthalate(DEP)environmental estrogens in petrochemical wastewater was developed,and the conditions of LLE were optimized.The best conditions of LLE were as follows:the extraction solvent ethyl acetate,the sample pH made acidic(pH<2),the extractant added by 0.1 mL/mL each time,saltingout agent NaCl 0.1 g/mL,6 times of extraction,and each extraction time 2 min.The experimental results indicated that:In the range of mass concentration was 1-100 mg/L for BPA and DEP,the linearity of their standard curves are good;the limits of detection(LODs)and limits of quantitative(LOQs)were 5.18,17.11μg/L for BPA and 0.89,2.96μg/L for DEP,and the average recoveries were in the range of 81.4%-124.9%with the relative standard deviation(RSD)less then 5.5%(n=7).

关 键 词：液液萃取 气相色谱-质谱 环境雌激素 双酚A 邻苯二甲酸二乙酯 同时测定 

分 类 号：X132[环境科学与工程—环境科学]