title: Determination of Xylene and Toluene by Solid-Phase Microextraction Using Au Nanoparticles-Thiol Silane Film Coupled to Ion Mobility Spectrometry.
abstract: A simple, rapid and sensitive method for analysis of xylene and toluene was developed using the solid-phase microextraction (SPME) combined with ion mobilityspectrometry (IMS). Gold nanoparticles-thiol silane film (Au NPs-TSF) was applied as a newsorbent for SPME. Thiol silane film was formed on the surface of a stainless steel wire through incorporating Au nanoparticles during synthesis using sol-gel technique. The extraction properties of the fiber to xylene and toluene were examined, using a SPME device and thermal desorption ininjection port of IMS. The calibration graphs were linear in the range of 1.10-32.0 and 16.0-112.0 ppb for xylene and toluene, respectively. The detection limits for xylene and toluene were 0.7 and 8.0 ppb, respectively. The proposed method was applied without any considerable sample pretreatment and it was found to be simple enough to be strongly recommended for real sample analysis.
authors.affiliation: Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, 84156-83111, Isfahan, Iran. Allafchian@cc.iut.ac.ir.
authors.forename: Ali Reza
authors.initials: AR
authors.lastname: Allafchian
authors.affiliation: Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, 84156-83111, Isfahan, Iran.
authors.forename: Ava
authors.initials: A
authors.lastname: Akhgar
authors.affiliation: Department of Chemistry, Isfahan University of Technology, 84156-83111, Isfahan, Iran.
authors.forename: Vahideh
authors.initials: V
authors.lastname: Ielbeigi
authors.affiliation: Department of Chemistry, Isfahan University of Technology, 84156-83111, Isfahan, Iran.
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Tabrizchi
mesh_terms: D053758:Nanoparticles; D012821:Silanes / Q000737:chemistry; D052617:Solid Phase Microextraction / Q000379:methods; D013057:Spectrum Analysis / Q000379:methods*; D013438:Sulfhydryl Compounds / Q000737:chemistry; D014050:Toluene / Q000032:analysis*; D014992:Xylenes / Q000032:analysis*
chemical_list: D012821:Silanes; D013438:Sulfhydryl Compounds; D014992:Xylenes; D014050:Toluene
keywords: Au nanoparticles; Ion mobility spectrometry; Solid-phase microextraction; Thiol silane film