title: A novel Schiff base network-1 nanocomposite coated fiber for solid-phase microextraction of phenols from honey samples.
abstract: A novel covalent organic framework, Schiff base network-1 (SNW-1), was synthesized and used as a solid-phase microextraction (SPME) fiber coating material. The SNW-1 coated SPME fiber was fabricated by a covalent chemical cross-linking between the SNW-1 nanocomposite and a silanol-functionalized stainless steel wire substrate. Scanning electron microscopy and nitrogen isothermal adsorption results indicate that the new fiber coating exhibited a porous, homogenous surface with the Brunauer-Emmett-Teller surface of 668m2g-1. The prepared fiber was explored for the SPME of phenols from honey samples prior to their determination by gas chromatography-mass spectrometry. The developed method had large enrichment factors (136-816), low limits of detection (0.06-0.2ngg-1), good linearity (0.1-100.0ngg-1) and repeatability (<9.7%) for phenols. The recoveries for spiked phenols (1.0ngg-1and 10.0ngg-1) in Wolfberry, Robinia and Codonopsis honey samples were in the range of 84.2-107.2% with the relative standard deviations ranging from 3.8% to 12.7%. The developed method was suitable for the determination of phenols from honey samples.
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, China.
authors: Wenchang
authors: W
authors: Wang
authors: College of Food Science and Technology, Agricultural University of Hebei, Baoding 071001, China.
authors: Juntao
authors: J
authors: Wang
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, China.
authors: Shuaihua
authors: S
authors: Zhang
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, China.
authors: Penglei
authors: P
authors: Cui
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, China.
authors: Chun
authors: C
authors: Wang
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, China; College of Food Science and Technology, Agricultural University of Hebei, Baoding 071001, China. Electronic address: wangzhi@hebau.edu.cn.
authors: Zhi
authors: Z
authors: Wang
mesh_terms: D005506:Food Contamination / Q000032:analysis; D006722:Honey / Q000032:analysis*; D057230:Limit of Detection; D053761:Nanocomposites / Q000737:chemistry*; D010636:Phenols / Q000032:analysis* / Q000737:chemistry; D012545:Schiff Bases / Q000737:chemistry*; D052617:Solid Phase Microextraction; D013193:Stainless Steel / Q000737:chemistry
chemical_list: D010636:Phenols; D012545:Schiff Bases; D013193:Stainless Steel
keywords: Covalent organic frameworks; Honey samples; Phenols; Schiff base network-1; Solid-phase microextraction