超声辅助离子液体－分散液液微萃取－高效液相色谱法测定水中苯胺类化合物

摘要

本研究建立了超声辅助离子液体－分散液液微萃取－高效液相色谱测定环境水样中苯胺（ AN）、对氟苯胺（4－FA）、对硝基苯胺（4－NA）、对氯苯胺（4－CA）四种苯胺化合物的方法。以最常用的烷基咪唑六氟磷酸盐类离子液体为萃取剂，通过超声加速萃取剂的分散程度，提高了萃取效率。该方法的检测限达到0．1～73 ng／ml，对黄河水和自来水中的加标回收率均在90．5％～113％之间，回收效果良好。与传统的液液萃取相比，该萃取方法具有绿色、快速、富集效果好、有机溶剂消耗小的优点，可以满足环境水体中苯胺类化合物的测定。%Ultrasound-assisted ionic liquid dispersive liquid -liquid microextraction combined with high performance liquid chromatography ( HPLC) method for preconcentration and determination of trace amounts of anilines in water samples was es -tablished .1-butyl-3-methylmidazolium hexafluoro -phosphate ( [ C4 MIM] [PF 6 ] ) is selected because it can simultane-ously extract aniline compounds from water .The limits of detection is in the range of 0.1~73 ng/ml.The developed method showed high relative recoveries for Aniline (AN),4-Fluoroaniline (4-FA),4-Nitroaniline (4-NA),4-Chloroaniline (4-CA) at different concentrations from 90.5%to 113%,which ensured the accuracy of method using to detect the amount of anilines in environmental water samples .