Feng Juanjuan, Wang Xiuqin, Tian Yu, Luo Chuannan, Sun Min
Key Laboratory of Interfacial Reaction and Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China.
J Sep Sci. 2017 Dec;40(24):4773-4779. doi: 10.1002/jssc.201700975. Epub 2017 Nov 17.
An in-tube solid-phase microextraction device was developed by packing poly(ionic liquids)-coated stainless-steel wires into a polyether ether ketone tube. An anion-exchange process was performed to enhance the extraction performance. Surface properties of poly(ionic liquids)-coated stainless-steel wires were characterized by scanning electron microscopy and energy dispersive X-ray spectrometry. The extraction device was connected to high-performance liquid chromatography equipment to build an online enrichment and analysis system. Ten polycyclic aromatic hydrocarbons were used as model analytes, and important conditions including extraction time and desorption time were optimized. The enrichment factors from 268 to 2497, linear range of 0.03-20 μg/L, detection limits of 0.010-0.020 μg/L, extraction and preparation repeatability with relative standard deviation less than 1.8 and 19%, respectively were given by the established online analysis method. It has been used to detect polycyclic aromatic hydrocarbons in environmental samples, with the relative recovery (5, 10 μg/L) in the range of 85.1-118.9%.
通过将聚（离子液体）涂覆的不锈钢丝填充到聚醚醚酮管中，开发了一种管内固相微萃取装置。进行了阴离子交换过程以提高萃取性能。通过扫描电子显微镜和能量色散X射线光谱法对聚（离子液体）涂覆的不锈钢丝的表面性质进行了表征。将萃取装置连接到高效液相色谱设备上，构建了一个在线富集和分析系统。以十种多环芳烃作为模型分析物，对萃取时间和解吸时间等重要条件进行了优化。所建立的在线分析方法给出了268至2497的富集因子、0.03 - 20μg/L的线性范围、0.010 - 0.020μg/L的检测限、萃取和制备的重复性，相对标准偏差分别小于1.8%和19%。它已被用于检测环境样品中的多环芳烃，相对回收率（5、10μg/L）在85.1 - 118.9%范围内。
