Dummy molecularly imprinted polymers as the coating of stir bar for sorptive extraction of bisphenol A in tap water

Journal of Separation Science
Na ShengQin Hu

Abstract

A unique stir bar coated with dummy molecularly imprinted polymers for bisphenol A was prepared by sol-gel technique. The scanning electron microscopic image of the coating presented a homogeneous surface with a thickness of about 57 ± 2.5 μm. The Fourier transform infrared spectrum of the coating proved the incorporating of dummy molecularly imprinted polymers with the sol-gel network. When used to extract bisphenol A from aqueous solution containing bisphenol A and its three analogs (4-tert-butylphenol, 4,4'-dihydroxybiphenyl, and 3,3',5,5'-tetrabromo-bisphenol A). Dummy molecularly imprinted polymers-coated stir bar showed better selectivity than the bars coated with polydimethylsiloxane or non-imprinted polymers. The extraction conditions including stirring speed, pH, and extraction time were optimized. After back extraction with methanol, the extracts were analyzed by high-performance liquid chromatography-fluorescence detection. The linear range was 0.0228-0.456 ng/mL with correlation coefficient of 0.9994 and the detection limit was about 5.70 × 10(-3) ng/mL based on three times ratio of signal-to-noise. The method was applied to the determination of trace bisphenol A in tap water.

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Citations

Jun 6, 2013·BioMed Research International·Zoraida Sosa-FerreraJosé Juan Santana-Rodríguez
Oct 19, 2013·Analytical and Bioanalytical Chemistry·Man HeBin Hu
Mar 20, 2013·Journal of Pharmaceutical and Biomedical Analysis·Juan Ignacio CachoManuel Hernández-Córdoba
Oct 10, 2014·Journal of Separation Science·Carme Valls-CantenysVictòria Salvadó
Mar 5, 2016·Chemical Society Reviews·Lingxin ChenJinhua Li
Aug 4, 2016·Analytical and Bioanalytical Chemistry·Fengxia SunXiayu Peng
Nov 26, 2020·Analytical Methods : Advancing Methods and Applications·Natascha A TeixeiraGilberto Abate

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