摘要
建立了超声波辅助-低密度萃取剂分散液液微萃取(LDS-USA-DLLME)-气相色谱法测定水中邻苯二甲酸二乙酯(DEP)和菲(Phe)的方法。采用低密度溶剂(甲苯)为萃取剂,超声波为分散剂处理水样,并讨论了萃取剂种类和体积、超声温度和时间、冰浴时间和盐效应等重要因素对回收率的影响。在最优萃取条件下,DEP和菲在0.1~100μg·L^(-1)范围内具有良好的线性,相对标准偏差在3.5%~7.8%之间,检出限为0.006和0.010μg·L^(-1)。对实际水样进行加标实验,回收率在81.9%~100.6%之间。该方法具有高效、简便、廉价、环境友好等优点,能够成功分析水中的DEP和菲。
Diethyl phthalate（ DEP） and phenanthrene（ Phe） were determined by LDS-USA-DLLME extraction coupled with gas chromatograph.In this approach,low-density solvent（ toluene） as extraction solvent and ultrasound radiation as dispersive solvent were used to extract DEP and Phe from water sample.Some important factors affecting the extraction recovery,such as extraction solvent type and volume,ultrasonic temperature and time,ice bath time and salt effect were systematically discussed. Under the optimized extraction conditions,calibration curves were obtained with a good linearity in the range of 0. 1 ～ 100 μg·L^-1for DEP and Phe.The relative standard deviations（ RSD,n = 5） were varied between 3. 5% ～ 7. 8% and the limits of detection（ LODs） were 0. 006 and0. 010μg·L^-1,respectively.The recoveries of DEP and Phe spiked in real water samples were located in the range of 81. 9% ～100. 6%. This method was successfully applied to the analysis of DEP and Phe in water samples,and was proved to be efficient,convenient,inexpensive and environmental friendly.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2016年第3期420-424,共5页
Chemical Research and Application
基金
四川文理学院项目(2013Z005Y)资助
四川文理学院化学化工学院大学生应用创新能力训练计划项目(hg2014xly10)资助
