Dalvand Kolsoum, Rashidipour Marzieh, Ghiasvand Alireza
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Acta Chim Slov. 2025 Jun 10;72(2):347-358. doi: 10.17344/acsi.2024.8851.
An organic-inorganic polyaniline-silica (PANI/SiO₂) nanocomposite was synthesized through a combination of electrospinning and in-situ polymerization. This synthetic strategy effectively minimized PANI aggregation during polymerization, resulting in a higher yield and improved structural uniformity. Taking advantage of these enhanced properties, the nanocomposite was electrodeposited onto a stainless-steel wire and employed as an efficient sorbent for the extraction of linear alkylbenzenes (LABs) via headspace solid-phase microextraction (HS-SPME), followed by analysis using gas chromatography coupled with flame ionization detection (GC-FID). The structure and morphology of the synthesized sorbent were characterized using scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FT-IR) techniques. Response surface methodology (RSM) involving central composite design (CCD) was employed to evaluate the important experimental variables. Under the optimal conditions, linear dynamic ranges (LDRs) were in the range of 0.05-12 ng mL-1 for Φ-C11 (undecylbenzene) and Φ-C13 (tridecylbenzene), 0.02-12 ng mL-1 for Φ-C12 (dodecylbenzene) and Φ-C14 (tetradecylbenzene) with regression coefficient greater than 0.99. The limits of detection (LODs) were found to be 0.007-0.015 ng mL- 1. The developed HS-SPME-GC-FID method was successfully applied for extraction and determination of LABs in water and wastewater samples.
通过静电纺丝和原位聚合相结合的方法合成了一种有机-无机聚苯胺-二氧化硅（PANI/SiO₂）纳米复合材料。这种合成策略有效地减少了聚合过程中聚苯胺的聚集，从而提高了产率并改善了结构均匀性。利用这些增强的性能，将该纳米复合材料电沉积到不锈钢丝上，并用作通过顶空固相微萃取（HS-SPME）萃取直链烷基苯（LABs）的高效吸附剂，随后使用气相色谱-火焰离子化检测（GC-FID）进行分析。使用扫描电子显微镜（SEM）和傅里叶变换红外光谱（FT-IR）技术对合成的吸附剂的结构和形态进行了表征。采用涉及中心复合设计（CCD）的响应面方法（RSM）来评估重要的实验变量。在最佳条件下，对于Φ-C11（十一烷基苯）和Φ-C13（十三烷基苯），线性动态范围（LDRs）为0.05-12 ng mL-1，对于Φ-C12（十二烷基苯）和Φ-C14（十四烷基苯）为0.02-12 ng mL-1，回归系数大于0.99。检测限（LODs）为0.007-0.015 ng mL-1。所开发的HS-SPME-GC-FID方法成功应用于水和废水样品中LABs的萃取和测定。
