MilliporeSigma
  • Fabrication and application of zinc-zinc oxide nanosheets coating on an etched stainless steel wire as a selective solid-phase microextraction fiber.

Fabrication and application of zinc-zinc oxide nanosheets coating on an etched stainless steel wire as a selective solid-phase microextraction fiber.

Journal of chromatography. A (2015-02-11)
Wenlan Song, Mei Guo, Yida Zhang, Min Zhang, Xuemei Wang, Xinzhen Du
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%.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Poly(dimethylsiloxane), viscosity 1.0 cSt (25 °C)
Supelco
Naphthalene, Pharmaceutical Secondary Standard; Certified Reference Material
USP
Oxybenzone, United States Pharmacopeia (USP) Reference Standard
Supelco
SPME-OC Fiber Assembly, Polydimethylsiloxane/Divinylbenzene (PDMS/DVB), df 75 μm(Coating thickness includes 65 μm coating + 10 μm OC (overcoating), needle size 23 ga, pkg of 3 ea, fiber L 1 cm
Supelco
Bis(2-ethylhexyl) phthalate, Selectophore
Supelco
Dibutyl phthalate, PESTANAL®, analytical standard
Sigma-Aldrich
Anthracene, suitable for scintillation, ≥99.0% (GC)
Supelco
Bis(2-ethylhexyl) phthalate, PESTANAL®, analytical standard
Supelco
Dimethyl phthalate, PESTANAL®, analytical standard
Sigma-Aldrich
Diethyl pyrocarbonate, 96% (NT)
Sigma-Aldrich
Dibutyl phthalate, 99%
Supelco
Naphthalene, analytical standard
Sigma-Aldrich
Diethyl pyrocarbonate, 96% (NT)
Sigma-Aldrich
Dioctyl phthalate, ≥99.5%
Sigma-Aldrich
Dimethyl phthalate, ≥99%
Sigma-Aldrich
Dess-Martin periodinane, 97%
Sigma-Aldrich
Dimethyl phthalate, ≥99%
Supelco
Oxybenzone, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Diethyl pyrocarbonate, 96% (NT)
Sigma-Aldrich
Anthracene, sublimed grade, ≥99%
Supelco
Anthracene, analytical standard
Supelco
SPME fiber assembly Polydimethylsiloxane (PDMS), df 30 μm(PDMS, needle size 24 ga, for use with autosampler
Supelco
SPME fiber assembly Polydimethylsiloxane (PDMS), df 100 μm(PDMS, for use with autosampler, needle size 24 ga
Supelco
SPME fiber assembly polyacrylate (PA), df 85 μm(PA, for use with autosampler, needle size 24 ga
Supelco
SPME Sampling Stand, for use with 4 mL vials
Supelco
SPME Portable Field Sampler, coating PDMS/DVB
Supelco
SPME fiber assembly polyacrylate (PA), df 85 μm(PA, for use with manual holder, needle size 24 ga
Supelco
SPME fiber assembly Polydimethylsiloxane (PDMS), df 100 μm(PDMS, for use with manual holder, needle size 23 ga
Supelco
SPME Sampling Stand, for use with 15 mL vials
Supelco
SPME Portable Field Sampler, coating CAR/PDMS