title: A novel silver-coated solid-phase microextraction metal fiber based on electroless plating technique.
abstract: A novel silver-coated solid-phase microextraction fiber was prepared based on electroless plating technique. Good extraction performance of the fiber for model compounds including phthalate esters (dibutyl phthalate, dioctyl phthalate, dicyclohexyl phthalate and diallyl phthalate) and polycyclic aromatic hydrocarbons (naphthalene, fluorene, phenanthrene, fluoranthene) in aqueous solution was obtained. Under the optimized conditions (extraction temperature, extraction time, ionic strength and desorption temperature), the proposed SPME-GC method showed wide linear ranges with correlation coefficients (R(2)) ranging from 0.9745 to 0.9984. The limits of detection were at the range of 0.02 to 0.1 μg L(-1). Single fiber repeatability and fiber-to-fiber reproducibility as well as stability to acid, alkali and high temperature were studied and the results were all satisfactory. The method was applied successfully to the aqueous extracts of disposable paper cup and instant noodle barrel. Several kinds of analytes were detected and quantified.
authors.affiliation: Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Juanjuan
authors.initials: J
authors.lastname: Feng
authors.forename: Min
authors.initials: M
authors.lastname: Sun
authors.forename: Jubai
authors.initials: J
authors.lastname: Li
authors.forename: Xia
authors.initials: X
authors.lastname: Liu
authors.forename: Shengxiang
authors.initials: S
authors.lastname: Jiang
mesh_terms: D004952:Esters; D009994:Osmolar Concentration; D010795:Phthalic Acids / Q000032:analysis* / Q000302:isolation & purification; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000302:isolation & purification; D012834:Silver / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000379:methods*; D013696:Temperature; D013997:Time Factors
chemical_list: D004952:Esters; D010795:Phthalic Acids; D011084:Polycyclic Aromatic Hydrocarbons; D012834:Silver