title: A solid-phase microextraction fiber with carbon nanoparticles as sorbent material prepared by a simple flame-based preparation process.
abstract: A novel carbon nanoparticles-coated solid-phase microextraction (SPME) fiber was prepared via a simple and low-cost flame-based preparation process, with stainless steel wire as support. Surface characteristic of the fiber was studied with scanning electron microscope. A nano-scaled brushy structure was observed. Coupled to gas chromatography (GC), the fiber was used to extract phthalate esters (PAEs) and polycyclic aromatic hydrocarbons (PAHs) in aqueous samples. Analytical performances of the proposed method were investigated under the optimum extraction conditions (extraction temperature, 40°C; content of KCl, 30% (w/v); extraction time, 50min for PAEs and 40min for PAHs) and compared with other reports for the same analytes. Calibration ranges were 0.06-500μgL(-1) for di-n-butyl phthalate (DBP), and 0.1-300μgL(-1) for di-cyclohexyl phthalate (DCHP) and di-(2-ethyl-hexyl) phthalate (DEHP). For the eight PAHs, good linearity was obtained ranging from 0.01 to 150μgL(-1). Limits of detection were 0.005μgL(-1) for three PAEs and 0.001-0.003μgL(-1) for eight PAHs. The fiber exhibited excellent stability. It can be used for 100 times with RSDs of extraction efficiency less than 22.4%. The as-established SPME-GC method was applied to determine PAEs in food-wrap and PAHs in cigarette ash and snow water, and satisfactory results were obtained. The carbon nanoparticles-coated SPME fiber was efficient for sampling of organic compounds from aqueous samples.
authors.affiliation: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China. sunmin-123456@163.com
authors.forename: Min
authors.initials: M
authors.lastname: Sun
authors.forename: Juanjuan
authors.initials: J
authors.lastname: Feng
authors.forename: Huamin
authors.initials: H
authors.lastname: Qiu
authors.forename: Lulu
authors.initials: L
authors.lastname: Fan
authors.forename: Leilei
authors.initials: L
authors.lastname: Li
authors.forename: Chuannan
authors.initials: C
authors.lastname: Luo
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002849:Chromatography, Gas / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis / Q000302:isolation & purification; D006358:Hot Temperature; D057230:Limit of Detection; D053758:Nanoparticles / Q000737:chemistry*; D010795:Phthalic Acids / Q000032:analysis / Q000302:isolation & purification; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000302:isolation & purification; D011189:Potassium Chloride / Q000737:chemistry; D015203:Reproducibility of Results; D052617:Solid Phase Microextraction / Q000295:instrumentation* / Q000379:methods*; D013193:Stainless Steel
chemical_list: D004785:Environmental Pollutants; D010795:Phthalic Acids; D011084:Polycyclic Aromatic Hydrocarbons; D013193:Stainless Steel; D011189:Potassium Chloride; D002244:Carbon
keywords: Carbon nanoparticles; Flame-based preparation process; Gas chromatography; Phthalate esters; Solid-phase microextraction; Stainless steel wire