title: Fabrication and application of zinc-zinc oxide nanosheets coating on an etched stainless steel wire as a selective solid-phase microextraction fiber.
abstract: A novel zinc-zinc oxide (Zn-ZnO) nanosheets coating was directly fabricated on an etched stainless steel wire substrate as solid-phase microextraction (SPME) fiber via previous electrodeposition of robust Zn coating. The scanning electron micrograph of the Zn-ZnO nanosheets coated fiber exhibits a flower-like nanostructure with high surface area. The SPME performance of as-fabricated fiber was investigated for the concentration and determination of polycyclic aromatic hydrocarbons, phthalates and ultraviolet (UV) filters coupled to high performance liquid chromatography with UV detection (HPLC-UV). It was found that the Zn-ZnO nanosheets coating exhibited high extraction capability, good selectivity and rapid mass transfer for some UV filters. The main parameters affecting extraction performance were investigated and optimized. Under the optimized conditions, the calibration graphs were linear over the range of 0.1-200μgL(-1). The limits of detection of the proposed method were 0.052-0.084μgL(-1) (S/N=3). The single fiber repeatability varied from 5.18% to 7.56% and the fiber-to-fiber reproducibility ranged from 6.74% to 8.83% for the extraction of spiked water with 50μgL(-1) UV filters (n=5). The established SPME-HPLC-UV method was successfully applied to the selective concentration and sensitive determination of target UV filters from real environmental water samples with recoveries from 85.8% to 105% at the spiking level of 10μgL(-1) and 30μgL(-1). The relative standard deviations were below 9.7%.
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors: Wenlan
authors: W
authors: Song
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors: Mei
authors: M
authors: Guo
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors: Yida
authors: Y
authors: Zhang
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors: Min
authors: M
authors: Zhang
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China; Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, China.
authors: Xuemei
authors: X
authors: Wang
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China; Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, China. Electronic address: duxz@nwnu.edu.cn.
authors: Xinzhen
authors: X
authors: Du
mesh_terms: D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods*; D057230:Limit of Detection; D049329:Nanostructures / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis; D015203:Reproducibility of Results; D052617:Solid Phase Microextraction / Q000295:instrumentation*; D013193:Stainless Steel / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis; D015032:Zinc / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D014867:Water; D013193:Stainless Steel; D015032:Zinc; D015034:Zinc Oxide
keywords: Electrodeposition; Solid-phase microextraction; Stainless steel fiber; Ultraviolet filters; Zinc oxide nanosheets