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首页> 外文期刊>Analytical methods >Electrospun nanofibers prepared using polystyrene (PS) with polymeric additives for the determination of nicotine in cigarette mainstream smoke
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Electrospun nanofibers prepared using polystyrene (PS) with polymeric additives for the determination of nicotine in cigarette mainstream smoke

机译：用聚苯乙烯（PS）和聚合物添加剂制备的电纺纳米纤维，用于测定卷烟主流烟气中的尼古丁

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The objective of this paper was to use electrospun nanofibers as the adsorbents in solid phase extraction (SPE) to improve the extraction efficiency. The electrospun nanofibers were prepared in a lab using polystyrene (PS) along with the polymeric additives poly(methyl methacrylate) (PMMA) and co-poly(melaminea€“ureaa€“formaldehyde) (MUF), and were put into a tip to form a SPE system. The polymeric additives could provide the nanofibers with more adsorption sites due to their chemically reactive hydroxyl groups, leading to a better adsorption rate during extraction. We used the nanofiber SPE system to extract nicotine from cigarette mainstream smoke. Isothermal adsorption and elution experiments showed that nicotine adsorption and organic solvent elution were good, and we achieved a high extraction efficiency. We also used the system to quantify the nicotine content of mainstream smoke. The results showed a correlation between cigarette price and nicotine content: the higher the price of a cigarette, the higher the nicotine content of its mainstream smoke.
机译：本文的目的是在固相萃取（SPE）中使用电纺纳米纤维作为吸附剂，以提高萃取效率。在实验室中，使用聚苯乙烯（PS）以及聚合物添加剂聚甲基丙烯酸甲酯（PMMA）和共聚聚三聚氰胺（“三聚氰胺”，“脲””，“甲醛”）（MUF）制备了静电纺丝纳米纤维，并提出了建议。形成SPE系统。聚合物添加剂由于其化学反应性羟基，可以为纳米纤维提供更多的吸附位点，从而在萃取过程中产生更好的吸附速率。我们使用了纳米纤维SPE系统从卷烟主流烟气中提取尼古丁。等温吸附和洗脱实验表明，尼古丁的吸附和有机溶剂的洗脱性能良好，萃取效率较高。我们还使用该系统来量化主流烟气中尼古丁的含量。结果表明，卷烟价格与尼古丁含量之间存在相关性：卷烟价格越高，其主流烟中尼古丁含量越高。

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