Ultrasonication extraction coupled with magnetic solid-phase clean-up for the determination of polycyclic aromatic hydrocarbons in soils by high-performance liquid chromatography.
Ultrasonication extraction coupled with magnetic solid-phase clean-up for the determination of polycyclic aromatic hydrocarbons in soils by high-performance liquid chromatography.
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DOI：
10.1002/jssc.201000684
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发表时间：
2011-03
影响因子：
3.1
通讯作者：
Fei Yang;Yiming Long;Rui Shen;Chunyan Chen;Di Pan;Qianli Zhang;Q. Cai;S. Yao
中科院分区：
文献类型：
--
作者：
Fei Yang;Yiming Long;Rui Shen;Chunyan Chen;Di Pan;Qianli Zhang;Q. Cai;S. Yao
采用三步法合成C18功能化磁性微球，并利用傅里叶变换红外光谱（FTIR）和扫描电镜（SEM）对其进行表征，结合超声萃取技术对土壤样品中的多环芳烃（PAHs）进行净化富集。对磁固相萃取（MSPE）的洗脱溶剂、吸附剂用量、富集时间、有机改性剂等工艺参数以及超声处理时间和萃取溶剂进行了优化。在最佳条件下，方法的加标回收率为63.2-92.8%，相对标准偏差小于6.4%，检出限为0.5-1.0 ng/g。该方法具有提取效率高、操作简便、分析时间短等优点。该方法已成功应用于土壤样品中多环芳烃的测定。
C18-functionalized magnetic microspheres synthesized in a three-stage system and characterized by Fourier transform infrared (FTIR) spectroscopy and SEM were applied for clean-up and enrichment of polycyclic aromatic hydrocarbons (PAHs) in soil samples combined with ultrasonication extraction. Magnetic solid-phase extraction (MSPE) parameters, such as elution solvents, amounts of sorbents, enrichment time and organic modifier, were optimized together with ultrasonication time and extraction solvents. Under the optimal conditions, the developed method provided spiked recoveries of 63.2-92.8% with RSDs of less than 6.4% and limits of detection were 0.5-1.0 ng/g. This new method provides several advantages, such as high extraction efficiency, convenient extraction procedure and short analysis times. Finally, the method was successfully applied to the determination of polycyclic aromatic hydrocarbons in soil samples.