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• W2071171142 endingPage "136" @default.
• W2071171142 startingPage "130" @default.
• W2071171142 abstract "A novel ionic liquid (IL) bonded fused-sil-ica fiber for headspace solid-phase microextraction (HS-SPME)/gas chromatography-flame ionization detection (GC-FID) of methyl tert-butyl ether (MTBE) in a gasoline sample was prepared and used. The new proposed chemically bonded fiber has better thermal stability and durability than its corresponding physically coated fiber. Another advantage is that no spacer was used for the purpose of bonding the IL to the surface of the fused-silica. The latter advantage makes the preparation of these fibers easier with lower cost than those prepared using sol–gel method. The ionic liquid 1-methyl-3-(3-trimethoxysilyl propyl) imidazolium bis(trifluoromethylsulfonyl) imide was synthesized and cross linked to the surface of the fused-silica fiber. Then, the chemically IL-modified fibers were applied to the headspace extraction of MTBE. The chemically IL-modified fibers showed improved thermal stability at temperatures up to 220 °C relative to the physically IL-modified fibers (180 °C). The chemically bonded IL film on the surface of the fused-silica fiber was durable over 16 headspace extractions without any significant loss of the IL film. The calibration graph was linear in a concentration range of 2–240 μg L−1 (R2 = 0.996) with the detection limit of 0.1 μg L−1 level. The reproducibility (RSD %, n = 6) of the new IL bonded fused-silica fiber (8.9%) was better than the physically coated fiber (12%) suggesting that the proposed chemically IL-modified fiber is more robust than the physically IL-modified fiber. The optimum extraction conditions were the followings: 40 °C extraction temperature, 12 min extraction time, 30 s desorption time and sample agitation at 200 rpm." @default.
• W2071171142 created "2016-06-24" @default.
• W2071171142 creator A5000937690 @default.
• W2071171142 creator A5036118381 @default.
• W2071171142 creator A5036382464 @default.
• W2071171142 creator A5064795356 @default.
• W2071171142 date "2011-01-01" @default.
• W2071171142 modified "2023-10-10" @default.
• W2071171142 title "A novel reusable ionic liquid chemically bonded fused-silica fiber for headspace solid-phase microextraction/gas chromatography-flame ionization detection of methyl tert-butyl ether in a gasoline sample" @default.
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• W2071171142 doi "https://doi.org/10.1016/j.chroma.2010.10.114" @default.
• W2071171142 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21130999" @default.
• W2071171142 hasPublicationYear "2011" @default.
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