表面活性剂辅助悬浮固化分散液液微萃取-气质联用测定水样中多环芳烃

Surfactant-assisted Dispersive Liquid-liquid Microextraction Method Based on Solidification of Floating Organic Drop Combined with Gas Chromatography-mass Spectrometry for the Determination of Polycyclic Aromatic Hydrocarbons in Water Samples

结合表面活性剂辅助液液微萃取技术和悬浮固化分散液液微萃取技术的特点,建立了表面活性剂辅助悬浮固化分散液液微萃取-气质联用(GC-MS)测定水样中16种多环芳烃(PAHs)的方法。在涡旋振荡辅助下采用表面活性剂辅助悬浮固化分散液液微萃取(SA-DLLME-SFOD)技术对水样进行预处理,并对提取过程进行优化,萃取液中的多环芳烃采用GC-MS法测定。SA-DLLME-SFOD技术具有操作简单、有机溶剂用量少、萃取液易于收集的特点,而GC-MS方法是一种选择性强、灵敏度高的分离分析方法,两者的联合应用将为水样中多环芳烃的测定提供一种快捷有效的分析方法。

Combining the advantages of surfactant-assisted liquid-liquid microextraction(SA-LLME)and dispersive liquid-liquid microextraction based on solidification of floating organic droplet(DLLME-SFOD),a surfactant-assisted DLLME-SFOD(SA-DLLME-SFOD)method coupled with gas chromatography-mass spectrometry(GC-MS)was developed for determination of 16 polycyclic aromatic hydrocarbons(PAHs)in water samples.Water samples were prepared by SADLLME-SFOD method under the aid of vortex shaking,and the extraction procedure was optimized.PAHs in the extracted solvent were determined by GC-MS method.SA-DLLME-SFOD method has the properties of simple operation,less organic solvent consumption,and easy collection of extracted solvent;while GC-MS is a separation and analysis method with strong selectivity and high sensitivity.The combined application of the two methods will provide a rapid and effective analysis selection for the determination of PAHs in water samples.