title: Synthesis of layered zinc hydroxide intercalated with dodecyl sulfate organic-inorganic hybrid nanocomposite as a fiber coating for the headspace solid-phase microextraction of aromatic hydrocarbons from water.
abstract: We describe the synthesis of a layered zinc hydroxide-dodecyl sulfate organic-inorganic hybrid nanocomposite as a new solid-phase microextraction fiber. The fiber coating can be prepared easily in a short time and the reaction is at room temperature; it is mechanically stable and exhibits relatively high thermal stability. The synthesized layered zinc hydroxide-dodecyl sulfate nanocomposite was successfully prepared and immobilized on a stainless steel wire and evaluated for the extraction of aromatic compounds from aqueous sample solutions in combination with gas chromatography and mass spectrometry. The method yields good results for some validation parameters. Under optimum conditions (extraction time: 15 min, extraction temperature: 50°C, desorption time: 1 min, desorption temperature: 250°C, salt concentration: 0.5 g/mL), the limit of detection and dynamic linear range were 0.69-3.2 ng/L and 10-500 ng/L, respectively. The method was applied to the analyses of benzene, toluene, ethylbenzene, and o-, p-, and m-xylenes in two real water samples collected from the Aji river and Mehran river, Tabriz, Iran. Under optimum conditions, the repeatability and reproducibility for one fiber (n = 3), expressed as the relative standard deviation, was 3.2-7.3% and 4.2-11.2% respectively. The fibers are thermally stable and yield better recoveries than conventional methods of analysis.
authors: Young Researchers and Elite Club, Ahar Branch, Islamic Azad University, Ahar, Iran.
authors: Vahid
authors: V
authors: Yousefi
authors: Young Researchers and Elite Club, Marand Branch, Islamic Azad University, Marand, Iran.
authors: Sheyda
authors: S
authors: Parastari
authors: Department of Textiles Engineering, Amirkabir University of Technology, Tehran, Iran.
authors: Mohsen
authors: M
authors: Gorji
authors: Young Researchers and Elite Club, Ahar Branch, Islamic Azad University, Ahar, Iran.
authors: Reza
authors: R
authors: Foroutani
authors: Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
authors: Mehri
authors: M
authors: Mahdavi
authors: Department of Chemistry, Ahar Branch, Islamic Azad University, Ahar, Iran.
authors: Behzad
authors: B
authors: Hazizadeh
keywords: Aromatic compounds; Gas chromatography; Organic-inorganic hybrid nanocomposites; Solid-phase microextraction