title: High-performance polyethylene glycol-coated solid-phase microextraction fibers using sol-gel technology.
abstract: The sol-gel method is applied for the preparation of solid-phase microextraction (SPME) fibers. An electron microscopy experiment suggested a porous structure for Superox-4 (polyethylene glycol, PEG) coating. SPME-GC analyses provided evidence that the sol-gel fibers have some advantages, such as high velocities of mass transfer, efficient extraction rates. high thermal stability, long life span, and spacious range of application for both polar and non-polar analytes. Efficient SPME-GC analyses of benzene-toluene-ethylbenzene-xylenes, phenols, phthalic diesters, naphthalene congeners and pesticides were achieved using sol-gel-coated PEG fibers.
authors.affiliation: Department of Chemistry, Wuhan Universitry, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
authors.forename: C
authors.initials: C
authors.lastname: Xiao
authors.forename: C
authors.initials: C
authors.lastname: Wu
authors.forename: H
authors.initials: H
authors.lastname: Han
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D004952:Esters; D008855:Microscopy, Electron, Scanning; D009281:Naphthalenes / Q000032:analysis; D010575:Pesticides / Q000032:analysis; D010795:Phthalic Acids / Q000032:analysis; D011092:Polyethylene Glycols / Q000737:chemistry*; D012680:Sensitivity and Specificity
chemical_list: D004952:Esters; D009281:Naphthalenes; D010575:Pesticides; D010795:Phthalic Acids; D011092:Polyethylene Glycols