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Reference type: Journal
Authors: Chen D, Han XX, Wang Q, Xie LJ, Ai YH, Dang XP, Huang JL, Chen HX
Article Title: Magnetic molecularly imprinted polymers for selective extraction and determination of naphthols.
Publication date: 2017
Journal: Microchimica Acta
Volume: 184
Issue: (9)
Page numbers: 3373-3379.
DOI: 10.1007/s00604-017-2346-5

Abstract: The authors describe a magnetic molecular imprinted polymer (MMIP) for the extraction and detection of naphthols synthesized by surface imprinting technology using 1-naphthol as the template. The MMIPs were characterized by FT-IR spectroscopy, X-ray diffraction, thermogravimetric analysis and vibrating sample magnetometry. They are shown to be viable magnetic adsorbents for various naphthols. The effects of sample volume, pH value, ionic strength, adsorption time, and desorption solvent, volume and time were optimized. Following elution with methanol, the naphthols were quantified by HPLC. Under optimal experimental conditions, the MSPE-HPLC method exhibits a linear range from 0.02-25 mg kg-1 for naphthols. The limits of detection (LODs) are 6 μg kg-1 for both naphthols. The method was applied to the determination of 1-naphthol and 2-naphthol in hair coloring products. Recoveries are in the range of 88.8-101.6% with relative standard deviations of less than 9.3%
Template and target information: 1-naphthol, naphthols
Author keywords: Magnetic solid phase extraction (MSPE), molecular imprinted polymers, Core-shell magnetic particles, Composite magnetic materials, molecular recognition, sample pretreatment, Hair coloring product, high performance liquid chromatography

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