Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China; School of Geography Science, Nantong University, Nantong 226001, PR China.
Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
Talanta. 2019 Apr 1;195:647-654. doi: 10.1016/j.talanta.2018.11.090. Epub 2018 Nov 26.
In this study, large pore ordered mesoporous carbon (LP-OMC) material was first applied as solid-phase microextraction (SPME) coating for the extraction of polycyclic aromatic hydrocarbons (PAHs) from aqueous media. The LP-OMC SPME fiber was prepared via the dip-coating method in-combination with evaporation-induced self-assembly (EISA) approach. The LP-OMC coating material possessed large specific surface area with the BET surface area of 629 m g and uniform large pore size at the mean value of 13.5 nm with a narrow pore-size distribution. The extraction performance of LP-OMC fiber for PAHs was compared with another kind of OMC fiber with pore diameter of 4.1 nm. The results implied that the LP-OMC fiber showed better extraction capability towards PAHs. The developed LP-OMC-SPME method for PAHs exhibited wide linear ranges (0.01-50 μg L), low detection limits (1.6-10.0 ng L) and good repeatabilities (3.9-7.4% for one fiber, 6.7-11.7% for fiber-to-fiber). The method was successfully applied for the analysis of PAHs in real environmental water samples with satisfactory recovery ranging from 82.6% to 112.1%.
在这项研究中，首次将大孔有序介孔碳（LP-OMC）材料用作固相微萃取（SPME）涂层，用于从水介质中萃取多环芳烃（PAHs）。通过浸涂法与蒸发诱导自组装（EISA）方法相结合制备 LP-OMC SPME 纤维。LP-OMC 涂层材料具有大的比表面积，BET 表面积为 629 m²/g，孔径均匀，平均值为 13.5 nm，孔径分布较窄。将 LP-OMC 纤维对 PAHs 的萃取性能与另一种孔径为 4.1 nm 的 OMC 纤维进行了比较。结果表明，LP-OMC 纤维对 PAHs 具有更好的萃取能力。开发的用于 PAHs 的 LP-OMC-SPME 方法具有较宽的线性范围（0.01-50 μg/L）、较低的检测限（1.6-10.0 ng/L）和良好的重复性（一个纤维为 3.9-7.4%，纤维间为 6.7-11.7%）。该方法成功应用于真实环境水样中 PAHs 的分析，回收率在 82.6%至 112.1%之间。
