Facile preparation of polydopamine‐coated imprinted polymers on the surface of SiO2 for estrone capture in milk samples. Issue 12 (2nd November 2016)

• Record Type: Journal Article
• Authors: Zheng, Penglei; Zhang, Bilin; Luo, Zhimin; Du, Wei; Guo, Pengqi; Zhou, Yulan; Chang, Ruimiao; Chang, Chun; Fu, Qiang
• Is Part Of: Journal of separation science. Volume 41:Issue 12(2018)
• Page Start: 2585
• Page End: 2594
• Publication Date: 2016-11-02
• Subjects: dopamine -- estrone -- molecularly imprinted polymers -- self‐polymerization -- solid‐phase extraction; Separation (Technology) -- Periodicals; Chromatographic analysis -- Periodicals; 543.089
• DOI: 10.1002/jssc.201600611
• Languages: English
• ISSNs: 1615-9306

Abstract

Abstract: Estrone molecularly imprinted polymers were synthesized through the self‐polymerization of dopamine on the surface of silica gels, which had the characteristics of mild polymerization conditions, simple reaction procedure and good specific recognition ability for estrone. The estrone molecularly imprinted polymers were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, elemental analysis and nitrogen adsorption–desorption tests. The characterization confirmed that the imprinted polymers were successfully grafted on the surface of silica gels. Through investigating the adsorption performance, the prepared estrone molecularly imprinted polymers exhibited high adsorption capacity, fast mass transfer, as well as excellent selectivity toward estrone. The estrone molecularly imprinted polymers as the solid‐phase extraction adsorbent coupled with high‐performance liquid chromatography was developed to determine estrone from the milk samples. The developed estrone molecularly imprinted polymer solid‐phase extraction with high‐performance liquid chromatography method exhibited satisfactory specificity, precision, accuracy and good linearity relationship in the range of 0.2–20 μg/mL. The developed method is simple, fast, effective and high specificity method and it provides a new method to detect the residues of estrone in animal foods.