title: Synthesis of carbon nanotube/layered double hydroxide nanocomposite as a novel fiber coating for the headspace solid-phase microextraction of phenols from water samples.
abstract: In this research, a carbon nanotube/layered double hydroxide nanocomposite was synthesized by an in situ growth route by electrostatic force. The prepared carbon nanotube/layered double hydroxide nanocomposite was successfully prepared and deposited on a stainless-steel wire for the fabrication of the solid-phase microextraction fiber. The fiber was evaluated for the extraction of phenolic compounds from water samples. Analytical merits of the method, under optimum conditions (extraction temperature: 75°C, extraction time: 30 min, desorption time: 2 min, desorption temperature 260°C, salt concentration: 10% w/v) are 0.01-300 ng/mL for the linear dynamic range and 0.005-0.08 for the limit of detection. In optimum conditions, the repeatability for one fiber (n = 3), expressed as relative standard deviation, was between 6.5 and 9.9% for the phenolic compounds.
authors: Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran.
authors: Mir Mahdi
authors: MM
authors: Abolghasemi
authors: Vahid
authors: V
authors: Yousefi
authors: Marzieh
authors: M
authors: Piryaei
keywords: Carbon nanotubes; Gas chromatography; Layered double hydroxides; Phenols; Solid-phase microextraction