A polyacrylonitrile (PAN) coating was fabricated by electrospinning technique for using as a new extraction phase in mechanical stir bar sorptive extraction (MSBSE). The setup coupled with gas chromatography (GC) was proposed and applied for the extraction and determination of some low molecular weight polycyclic aromatic hydrocarbons (PAHs) in water samples. The effective parameters on the extraction process were optimized by the response surface methodology (RSM) based on the central composite design (CCD). Under the optimum conditions, the limits of detection (LOD) and limits of qualification (LOQ) were 0.008–0.4 ng mL −1 and 0.02–1.3 ng mL −1 , respectively. The relative standard deviations (RSDs) for the analytes, including acenaphthene (Ace), anthracene (Ant), naphthalene (Nap) and phenanthrene (Phe), was less than 12.7%. The relative recoveries (RRs) were above 94%. The extraction of the analytes by the MSBSE coated with PAN consumed about 256 kWh m −3 of electric energy. The coating can be used 200 times without significant changes in its performance because of hydrophobicity and the high mechanical strength of PAN. The proposed approach to improve SBSE for extracting PAHs from water samples is cost-effective and time-efficient because the introduced coating can be fabricated in a short time and by inexpensive raw materials. Graphic Abstract

中文翻译：

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静电纺聚丙烯腈作为一种新型涂层，用于机械搅拌棒从水样中萃取多环芳烃

通过静电纺丝技术制备聚丙烯腈 (PAN) 涂层，用作机械搅拌棒吸附萃取 (MSBSE) 中的新萃取相。提出了与气相色谱 (GC) 联用的设置，并将其应用于水样中一些低分子量多环芳烃 (PAH) 的提取和测定。通过基于中心复合设计（CCD）的响应面法（RSM）优化提取过程的有效参数。在最佳条件下，检测限 (LOD) 和定性限 (LOQ) 分别为 0.008–0.4 ng mL -1 和 0.02–1.3 ng mL -1 。包括苊 (Ace)、蒽 (Ant)、萘 (Nap) 和菲 (Phe) 在内的分析物的相对标准偏差 (RSD) 小于 12.7%。相对回收率 (RR) 高于 94%。通过涂有PAN 的MSBSE 提取分析物消耗约256 kWh m -3 电能。由于PAN的疏水性和高机械强度，该涂层可以使用200次而其性能没有显着变化。所提出的改善 SBSE 以从水样中提取 PAH 的方法具有成本效益和时间效率，因为引入的涂层可以在短时间内用廉价的原材料制造。图形摘要 所提出的改善 SBSE 以从水样中提取 PAH 的方法具有成本效益和时间效率，因为引入的涂层可以在短时间内用廉价的原材料制造。图形摘要 所提出的改善 SBSE 以从水样中提取 PAH 的方法具有成本效益和时间效率，因为引入的涂层可以在短时间内用廉价的原材料制造。图形摘要