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An azine-linked covalent organic framework as stationary phase for separation of environmental endocrine disruptors by open-tubular capillary electrochromatography.

Authors
  • Zhao, Lingyi1
  • Lv, Wenjuan2
  • Niu, Xiaoying1
  • Pan, Congjie1
  • Chen, Hongli1
  • Chen, Xingguo3
  • 1 State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China; Department of Chemistry, Lanzhou University, Lanzhou 730000, China. , (China)
  • 2 State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China; Department of Chemistry, Lanzhou University, Lanzhou 730000, China. Electronic address: [email protected] , (China)
  • 3 State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China; Department of Chemistry, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou 730000, China. Electronic address: [email protected] , (China)
Type
Published Article
Journal
Journal of chromatography. A
Publication Date
Nov 18, 2019
Pages
460722–460722
Identifiers
DOI: 10.1016/j.chroma.2019.460722
PMID: 31780079
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

In recent years, covalent organic frameworks (COFs) play an important role in the field of chromatographic separation. However, COFs are used rarely in open-tubular capillary electrochromatography (OT-CEC) so far, and the reported methods have not been applied to actual sample analysis. Herein, a novel azine-linked COF (N0-COF) coated capillary was prepared as OT-CEC separation channel and a new method for separation and detection of environmental endocrine disruptors, i.e., bisphenol A (BPA) and its analogues was established. Under optimal separation conditions, the analytes were baseline separated by the N0-COF coated capillary with 20 min. The intra-day, inter-day and column-to-column relative standard deviations were 0.07-2.99%, 1.05-3.20% and 1.31-5.83% for the migration time; 1.68-5.50%, 1.52-9.24% and 4.04-9.14% for the peak area. The method was further applied to separate and determine BPA and its analogues in beverage samples, and the recovery ranged from 91.0-112.0%. Copyright © 2019. Published by Elsevier B.V.

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