AbstractA porous aromatic framework (PAF) derived from triphenylamine (type PAF-41) was prepared and is shown to be a viable coating for fibrous solid-phase microextraction (SPME). PAF-41 can be easily synthesized and has a high surface area, a rich π-electron structure, and electron-rich nitrogen atoms in its framework. The PAF-41-coated fibrous SPME extractor was combined with a gas chromatographic separation and flame ionization detection. The method was applied to the quantitation of some aromatic organic compounds (AOCs), including polar amphetamine and methamphetamine and nonpolar ethylbenzene, o-, m- and p-xylenes, and styrene. The method was optimized after which a linear response is found for the 10–500 ng·mL−1 amphetamine and methamphetamine concentration ranges. The limits of detection are 1.0 and 0.5 ng·mL−1; and relative standard deviations for six repeated extractions with a single fiber are 5.3 and 6.7%. The method was applied for the determination of amphetamine and methamphetamine in spiked urine samples without any pretreatment except for dilution with water. The PAF-41 modified fiber also was applied to the extraction of styrene, xylenes and ethylbenzene. The enrichment capacities of the extractor for these AOCs were superior to those of commercial SPME extractors. Graphical abstract(a) Schemetic of the PAF-41-coated solid-phase microextraction (SPME) fiber. (b) Scanning electron microscope images of the PAF-41 fiber. (c) Chromatogram of urine sample containing amphetamine and methamphetamine.

中文翻译：

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多孔芳香骨架作为多功能纤维涂层，用于极性和非极性芳香有机化合物的固相微萃取

摘要制备了衍生自三苯胺（PAF-41 型）的多孔芳香骨架（PAF），并证明它是一种可行的纤维固相微萃取（SPME）涂层。PAF-41 易于合成，具有高表面积、丰富的 π 电子结构和骨架中富含电子的氮原子。PAF-41 涂层纤维 SPME 萃取器与气相色谱分离和火焰电离检测相结合。该方法适用于一些芳香族有机化合物 (AOC) 的定量，包括极性苯丙胺和甲基苯丙胺以及非极性乙苯、邻二甲苯、间二甲苯和对二甲苯以及苯乙烯。优化方法后，发现 10–500 ng·mL-1 苯丙胺和甲基苯丙胺浓度范围的线性响应。检测限为1.0和0.5 ng·mL-1；单根纤维六次重复提取的相对标准偏差为 5.3% 和 6.7%。该方法用于测定加标尿样中的苯丙胺和甲基苯丙胺，除用水稀释外，无需任何预处理。PAF-41 改性纤维还用于提取苯乙烯、二甲苯和乙苯。提取器对这些 AOC 的富集能力优于商业 SPME 提取器。图形摘要 (a) PAF-41 涂层固相微萃取 (SPME) 纤维的示意图。(b) PAF-41 纤维的扫描电子显微镜图像。(c) 含有苯丙胺和甲基苯丙胺的尿样色谱图。该方法用于测定加标尿样中的苯丙胺和甲基苯丙胺，除用水稀释外，无需任何预处理。PAF-41 改性纤维还应用于苯乙烯、二甲苯和乙苯的萃取。提取器对这些 AOC 的富集能力优于商业 SPME 提取器。图形摘要 (a) PAF-41 涂层固相微萃取 (SPME) 纤维的示意图。(b) PAF-41 纤维的扫描电子显微镜图像。(c) 含有苯丙胺和甲基苯丙胺的尿样色谱图。该方法用于测定加标尿样中的苯丙胺和甲基苯丙胺，除用水稀释外，无需任何预处理。PAF-41 改性纤维还应用于苯乙烯、二甲苯和乙苯的萃取。提取器对这些 AOC 的富集能力优于商业 SPME 提取器。图形摘要 (a) PAF-41 涂层固相微萃取 (SPME) 纤维的示意图。(b) PAF-41 纤维的扫描电子显微镜图像。(c) 含有苯丙胺和甲基苯丙胺的尿样色谱图。提取器对这些 AOC 的富集能力优于商业 SPME 提取器。图形摘要 (a) PAF-41 涂层固相微萃取 (SPME) 纤维的示意图。(b) PAF-41 纤维的扫描电子显微镜图像。(c) 含有苯丙胺和甲基苯丙胺的尿样色谱图。提取器对这些 AOC 的富集能力优于商业 SPME 提取器。图形摘要 (a) PAF-41 涂层固相微萃取 (SPME) 纤维的示意图。(b) PAF-41 纤维的扫描电子显微镜图像。(c) 含有苯丙胺和甲基苯丙胺的尿样色谱图。