Abstract
An amino-functionalized grooved polyacrylonitrile nanofiber mat was modified by both functional groups and in terms of surface morphology. The mat is shown to represent a viable adsorbent for solid-phase extraction of six priority phenolic pollutants and three phenolic xenoestrogens (phenol, 3-methoxyphenol, 4-nitrophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, pentachlorophenol, 4-tert-octylphenol, 4-nonylphenol and bisphenol A) from environmental water samples. Under optimized conditions, the analytes were completely extracted from 90 mL of water sample by using only 9 mg of the mat material. Following elution with an ammoniacal methanol-acetone mixture, the eluent was directly submitted to UPLC-MS/MS or HPLC with DAD detection. Satisfied linearity in range of 50 pg·mL−1 to 100 ng·mL−1 was achieved. The detection limits ranged from 4 to 60 pg·mL−1 which revealed the excellent sensitivity of the method in comparison to standardized and other techniques. The recoveries ranged from 82.4% to 111.4%, with the relative standard deviations of 4.0% to 11.4% (for n = 6). The method was applied to the determination of nine phenolic pollutants in water samples collected from sixteen inflow rivers and six Taihu Lake regions.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Project No. 81172721, 81473019), and Suzhou Nano research Special Plan (Project No. ZXG2013026).
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Qian, L., Li, X., Qi, F. et al. An amino-functionalized grooved nanofiber mat for solid-phase extraction of phenolic pollutants. Microchim Acta 184, 2861–2870 (2017). https://doi.org/10.1007/s00604-017-2313-1
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DOI: https://doi.org/10.1007/s00604-017-2313-1