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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.
J Chromatogr A. 2011 Jan 07; 1218(1):130-6.JC

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, 30s desorption time and sample agitation at 200 rpm.

Authors+Show Affiliations

Department of Chemistry, Faculty of Science, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran, Iran.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21130999

Citation

Amini, Ramin, et al. "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." Journal of Chromatography. A, vol. 1218, no. 1, 2011, pp. 130-6.
Amini R, Rouhollahi A, Adibi M, et al. 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. J Chromatogr A. 2011;1218(1):130-6.
Amini, R., Rouhollahi, A., Adibi, M., & Mehdinia, A. (2011). 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. Journal of Chromatography. A, 1218(1), 130-6. https://doi.org/10.1016/j.chroma.2010.10.114
Amini R, et al. 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. J Chromatogr A. 2011 Jan 7;1218(1):130-6. PubMed PMID: 21130999.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - 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. AU - Amini,Ramin, AU - Rouhollahi,Ahmad, AU - Adibi,Mina, AU - Mehdinia,Ali, Y1 - 2010/11/03/ PY - 2010/06/30/received PY - 2010/10/22/revised PY - 2010/10/26/accepted PY - 2010/12/7/entrez PY - 2010/12/7/pubmed PY - 2011/4/1/medline SP - 130 EP - 6 JF - Journal of chromatography. A JO - J Chromatogr A VL - 1218 IS - 1 N2 - 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, 30s desorption time and sample agitation at 200 rpm. SN - 1873-3778 UR - https://www.unboundmedicine.com/medline/citation/21130999/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_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(10)01524-4 DB - PRIME DP - Unbound Medicine ER -