title: Electrospun polymer nanofibers as a solid-phase extraction sorbent for the determination of trace pollutants in environmental water.
abstract: This paper describes the novel preparation of three kinds of nanofibers [poly(styrene-co-methacrylic acid), poly(styrene-co-p-styrene sulfonate), polystyrene] investigated as solid-phase extraction (SPE) sorbents to extract six compounds (nitrobenzene, 2-naphthol, benzene, n-butyl p-hydroxybenzoate, naphthalene, p-dichlorobenzene) in environmental water by high-performance liquid chromatography. Parameters affecting extraction efficiency were investigated in detail to explore the extraction mechanism of the nanofibers. Under optimized conditions, six compounds followed an excellent linear relationship in the range 10-5,000 ng mL(-1) with coefficients of determination (r (2)) greater than 0.99. The repeatability (expressed as relative standard deviations) was from 3.0 to 7.0%, corresponding to 2.0 mL of water samples at 25 and 500 ng mL(-1) spiked levels for the six compounds. The limits of detection varied from 0.01 to 0.15 ng mL(-1) (signal-to-noise ratio of 3). A comparison of the SPE using nanofibers as sorbents and the most commonly used octadecylsilica SPE cartridges was carried out in terms of absolute recovery, sensitivity, and reproducibility for the compounds investigated. Finally, the method was applied to four real water samples. The results highlighted the importance of functional groups, and the polarity of nanofibers in controlling sorption of target compounds, and clearly showed that the new method could be a viable and environmentally friendly technique for analyzing pollutants in environmental samples.
authors: School of Public Health, Southeast University, Nanjing, 210009, China.
authors: Dongjin
authors: D
authors: Qi
authors: Xuejun
authors: X
authors: Kang
authors: Liqin
authors: L
authors: Chen
authors: Yiyun
authors: Y
authors: Zhang
authors: Hongmei
authors: H
authors: Wei
authors: Zhongze
authors: Z
authors: Gu
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004784:Environmental Monitoring / Q000379:methods; D004785:Environmental Pollutants / Q000737:chemistry*; D004867:Equipment Design; D006838:Hydrocarbons / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D011108:Polymers / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D052616:Solid Phase Extraction; D012997:Solvents / Q000737:chemistry; D013055:Spectrophotometry, Infrared / Q000379:methods; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D004785:Environmental Pollutants; D006838:Hydrocarbons; D011108:Polymers; D012997:Solvents; D014874:Water Pollutants, Chemical; C026679:octadecylsilica; D014867:Water; D012822:Silicon Dioxide