Title: Dummy molecularly imprinted polymers as the coating of stir bar for sorptive extraction of bisphenol A in tap water
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.
Publication Year: 2012
Publication Date: 2012-02-14
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
Access and Citation
Cited By Count: 31
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