In this work, porous aromatic frameworks (PAFs) with different pore size were evaluated for simultaneous adsorption of 16 polycyclic aromatic hydrocarbons (PAHs) with large difference in polarity and molecular size. Two other porous organic polymers containing electron pushing/withdrawing group were investigated along for a comparison, and PAF-120 with the pore size of appr. 2.1 nm exhibited the highest extraction efficiency. Based on water contact angle and molecular dynamics simulation, the adsorption of 16 PAHs on PAF-120 was attributed to hydrophobic interaction, π-π interaction and molecular sieving effect. PAF-120/PDMS coated stir bar was then prepared by physical adhesion, and a method of stir bar sorptive extraction-gas chromatography-flame ionization detector was established for trace PAHs analysis in environmental samples. Under the optimal experimental conditions, the limits of detection (S/N = 3) for 16 PAHs were found to be in the range of 42-375 ng/L, with the relative standard deviations of 4.1-14.6% (n = 7). The enrichment factors varied from 31 (Indeno[1,2,3-cd]pyrene) to 80-fold (anthracene), with the maximal enrichment factor of 100-fold. The proposed method was applied to the analysis of PAHs in local environmental water and atmospheric particle samples. None of the 16 PAHs were detected in the collected water samples. While for the collected atmospheric particles, 12 PAHs were detected in fine particulate matter (PM_2.5) within the range of 0.6-2.8 ng/m³. For inhalable particulate matter (PM₁₀) and total suspended particulate matter (TSP), 16 PAHs were all detected in the range of 0.6-3.8 ng/m³ and 0.6-5.9 ng/m³, respectively. Quantitative recoveries were obtained in recovery test, demonstrating the accuracy and application potential of the proposed method.

在这项工作中，评估了具有不同孔径的多孔芳烃骨架（PAFs）同时吸附极性和分子大小差异很大的 16 种多环芳烃（PAHs）。一起研究了另外两种含有推/拉电子基团的多孔有机聚合物以进行比较，PAF-120的孔径约为。2.1 nm 表现出最高的提取效率。基于水接触角和分子动力学模拟，PAF-120对16种PAHs的吸附归因于疏水相互作用、π-π相互作用和分子筛效应。然后通过物理粘附制备PAF-120/PDMS涂层搅拌棒，建立搅拌棒吸附萃取-气相色谱-火焰离子化检测器用于环境样品中痕量PAHs分析的方法。在最佳实验条件下，16 种 PAHs 的检出限 (S/N = 3) 在 42-375 ng/L 范围内，相对标准偏差为 4.1-14.6% (n = 7) . 富集因子从 31（茚并[1,2,3-cd]芘）到 80 倍（蒽）不等，最大富集因子为 100 倍。将所提出的方法应用于当地环境水和大气颗粒样品中多环芳烃的分析。采集的水样中均未检测到 16 种 PAH。而对于收集的大气颗粒物，在细颗粒物（PM 3-cd]芘）到80倍（蒽），最大富集因子为100倍。将所提出的方法应用于当地环境水和大气颗粒样品中多环芳烃的分析。采集的水样中均未检测到 16 种 PAH。而对于收集的大气颗粒物，在细颗粒物（PM 3-cd]芘）到80倍（蒽），最大富集因子为100倍。将所提出的方法应用于当地环境水和大气颗粒样品中多环芳烃的分析。采集的水样中均未检测到 16 种 PAH。而对于收集的大气颗粒物，在细颗粒物（PM_2.5 ) 0.6-2.8 ng/m ³范围内。对于可吸入颗粒物（PM ₁₀）和总悬浮颗粒物（TSP），16种PAHs的检测范围分别为0.6-3.8 ng/m ³和0.6-5.9 ng/m ³。在回收率测试中获得了定量回收率，证明了该方法的准确性和应用潜力。