在电纺二氧化硅纳米纤维上电聚合聚苯胺,制备了用于线性烷基苯取样的SPME纤维。

IF 1.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
Kolsoum Dalvand, Marzieh Rashidipour, Alireza Ghiasvand
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引用次数: 0

摘要

采用静电纺丝和原位聚合相结合的方法合成了有机-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苯胺在聚合过程中的聚集,从而提高了产率和结构均匀性。利用这些增强的性能,纳米复合材料被电沉积在不锈钢丝上,作为一种高效的吸附剂,通过顶空固相微萃取(HS-SPME)提取线性烷基苯(LABs),然后使用气相色谱-火焰离子化检测(GC-FID)进行分析。利用扫描电镜(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貌进行了表征。采用响应面法(RSM),结合中心复合设计(CCD)对重要实验变量进行评价。在最佳条件下,Φ-C11(十一烷基苯)和Φ-C13(三烷基苯)的线性动态范围为0.05 ~ 12 ng mL-1, Φ-C12(十二烷基苯)和Φ-C14(十四烷基苯)的线性动态范围为0.02 ~ 12 ng mL-1,回归系数大于0.99。检出限为0.007 ~ 0.015 ng mL- 1。所建立的HS-SPME-GC-FID方法成功地用于水和废水样品中实验室的提取和测定。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electropolymerized polyaniline on electrospun silica nanofibers to prepare an SPME fiber for the sampling of linear alkylbenzenes.

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.

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来源期刊
Acta Chimica Slovenica
Acta Chimica Slovenica 化学-化学综合
CiteScore
2.50
自引率
25.00%
发文量
80
审稿时长
1.0 months
期刊介绍: Is an international, peer-reviewed and Open Access journal. It provides a forum for the publication of original scientific research in all fields of chemistry and closely related areas. Reviews, feature, scientific and technical articles, and short communications are welcome.
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