Facile fabrication of ionic liquid doped polycarbazole coating for the headspace solid-phase microextraction of some environmental pollutants.
作者： Yuanyuan Feng , Mian Wu , Faqiong Zhao , Baizhao Zeng
DOI: 10.1016/J.TALANTA.2015.11.013
关键词: Solid-phase microextraction 、 Fiber 、 Ionic liquid 、 Polydimethylsiloxane 、 Gas chromatography 、 Nuclear chemistry 、 Chemistry 、 Detection limit 、 Hexafluorophosphate 、 Chromatography 、 Coating
摘要: A novel polycarbazole (PCz)-ionic liquid (IL, i.e. 1-hydroxyethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide, [HOEMIm][NTf2]) composite coating (PCz-IL) was fabricated by electrodeposition. The IL could facilitate the electrodeposition of poor-conductive PCz and a more porous obtained. exhibited enhanced extraction capacity for some environmental pollutants (i.e. o-chlorotoluene, p-bromotoluene, o-nitrotoluene, m-nitrotoluene, p-nitrotoluene), as they interact through π-π hydrophobic interactions. Compared with [HOEMIm][NTf2] coated fiber, other PCz-IL fibers (here IL=1-hydroxyethyl-3-methylimidazolium hexafluorophosphate 1-methyl-3-octylimidazolium hexafluorophosphate) commercial polydimethylsiloxane polyacrylate), fiber showed better performance. It used determination coupling gas chromatography, limits detection were 47.8-65.9 ng L(-1) under optimized conditions linear ranges 0.1-500 μg correlation coefficients above 0.9947 different compounds. relative standard deviations (RSDs) 3.4-4.6% five successive extractions single RSDs inter-fiber 6.5-10.4% (n=5). successfully applied to real samples recoveries standards added 88.6-108.8% below 9.7%.
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