Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China.
J Sep Sci. 2018 Aug;41(16):3267-3274. doi: 10.1002/jssc.201800477. Epub 2018 Jul 11.
To improve the durability and extraction efficiency of an ionic liquid coating, 1-dodecyl-3-vinylimidazolium bromide was polymerized and grafted onto basalt fibers for in-tube solid-phase microextraction. To develop an extraction tube, basalt fibers grafted with the poly(ionic liquids) coating were filled into a polyether ether ketone tube with a 0.75 mm inner diameter. The extraction tube was connected to high-performance liquid chromatography system equipped with a sampling pump to build an online enrichment and analysis system. Using four common phthalates as model analytes, the extraction tube was investigated by the online analysis system. Good enrichment performance was exhibited by high enrichment factors ranging from 851 to 1858. Under the optimum conditions, an online analysis method was established, and good linearity (0.03-12 and 0.15-12 μg/L) and low limits of detection (0.01-0.05 μg/L) were achieved. This analysis method was applied to real samples including water in a disposable plastic box and the bottled water, some targets were detected but not quantified, and the relative recoveries spiked at 2, 5 and 10 μg/L were in the range of 86.4-119.5%.
为了提高离子液体涂层的耐用性和萃取效率，将 1-十二烷基-3-乙烯基咪唑溴聚合并接枝到玄武岩纤维上，用于管内固相微萃取。为了开发萃取管，将接枝有聚（离子液体）涂层的玄武岩纤维填充到聚醚醚酮管中，管内径为 0.75 毫米。萃取管与配备有采样泵的高效液相色谱系统相连，构建在线富集和分析系统。使用四种常见的邻苯二甲酸酯作为模式分析物，通过在线分析系统对萃取管进行了研究。高富集因子（851 至 1858）表现出良好的富集性能。在最佳条件下，建立了在线分析方法，实现了良好的线性（0.03-12 和 0.15-12 μg/L）和低检测限（0.01-0.05 μg/L）。该分析方法应用于实际样品，包括一次性塑料盒中的水和瓶装水，一些目标物未被定量检测到，但在 2、5 和 10 μg/L 浓度下的相对回收率在 86.4-119.5%范围内。
