title: Relevance study of bare and coated zero valent iron nanoparticles for lindane degradation from its by-product monitorization.
abstract: Zero-valent iron nanoparticles (NZVI) as well as polymer-stabilized nanoparticles were synthesized and used for lindane (γ-hexachlorocyclohexane) degradation in aqueous solution. To study the effectiveness of the different coated nanoparticles, simple and rapid analytical methods have been developed to measure and to detect lindane and its by-products. For the monitorization of lindane degradation solid-phase extraction (SPE) was used, while volatile by-products formation measurement was carried out by headspace-solid phase microextraction (HS-SPME) followed by GC/MS. The SPE-GC/MS method provides low detection limits (0.2 μg L(-1)), high recovery (above 95%) and it is a valuable tool for kinetic studies of the degradation process for each polymer used, while HS-SPME-GC/MS has proved to be an effective tool for the extraction and evaluation of volatile degradation by-products.
authors: Analytical Chemistry Department, Faculty of Science and Technology, University of Basque Country/EHU, Box 644, 48080 Bilbao, Spain. Electronic address: itxasosanroman@hotmail.com.
authors: I
authors: I
authors: San Román
authors: M L
authors: ML
authors: Alonso
authors: L
authors: L
authors: Bartolomé
authors: A
authors: A
authors: Galdames
authors: E
authors: E
authors: Goiti
authors: M
authors: M
authors: Ocejo
authors: M
authors: M
authors: Moragues
authors: R M
authors: RM
authors: Alonso
authors: J L
authors: JL
authors: Vilas
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D001556:Hexachlorocyclohexane / Q000032:analysis* / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D052617:Solid Phase Microextraction; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D014874:Water Pollutants, Chemical; D001556:Hexachlorocyclohexane; D007501:Iron
keywords: HS–SPME; Lindane; SPE; Zero-valent iron nanoparticles