Electrospun polyacrylonitrile/clinoptilolite (PAN/CP) nanofibers were used to extract polycyclic aromatic hydrocarbons (PAHs) (acenaphthene, acenaphthylene, naphthalene, and phenanthrene) from water samples by solid-phase microextraction (SPME). The target PAHs was detected and quantified by gas chromatography equipped with a flame ionization detector. The PAN/CP fibrous coating with uniform morphology and without beads was electrospun after optimizing the electrospinning parameters by the Taguchi method. Thermogravimetric analysis of PAN/CP nanofibers indicated that the nanofibers are thermally stable up to 357°C. The effective parameters that affect the extraction by SPME were optimized using the response surface methodology based on the central composite design. The limits of detection and limits of quantification by the proposed method were 0.10–0.32 and 0.45–1.12 ng mL−1, respectively. The relative standard deviations were below 12%. The method was assessed for extracting PAHs from real samples including agricultural water, rainwater and spring water. The obtained relative recoveries were higher than 86%.

中文翻译：

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用于水样 PAHs 固相微萃取的电纺聚丙烯腈/斜发沸石涂层

电纺聚丙烯腈/斜发沸石 (PAN/CP) 纳米纤维用于通过固相微萃取 (SPME) 从水样中提取多环芳烃 (PAHs)（苊、苊、萘和菲）。通过配备有火焰离子化检测器的气相色谱法检测和量化目标 PAHs。采用田口法优化静电纺丝参数后，制备出形态均匀、无珠粒的PAN/CP纤维涂层。PAN/CP 纳米纤维的热重分析表明，纳米纤维在高达 357°C 的温度下具有热稳定性。使用基于中心复合设计的响应面方法优化了影响 SPME 提取的有效参数。该方法的检测限和定量限均为0。分别为 10–0.32 和 0.45–1.12 ng mL-1。相对标准偏差低于 12%。该方法用于从包括农业用水、雨水和泉水在内的真实样品中提取 PAHs 的情况进行了评估。获得的相对回收率高于 86%。