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Ionic liquid-functionalized covalent organic frameworks on the surface of silica for online solid-phase extraction.
Li, Xiaomin; Sun, Mingxia; Feng, Yang; Liu, Yanming; Wang, Yanli; Feng, Juanjuan; Sun, Min.
Afiliación
  • Li X; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
  • Sun M; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
  • Feng Y; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
  • Liu Y; Shandong Institute for Food and Drug Control, Key Laboratory of Supervising Technology for Meat and Meat Products for State Market Regulation, Shandong Research Center of Engineering and Technology for Quality Control of Food for Special Medical Purposes, Shandong Research Center of Engineering and
  • Wang Y; Shandong Institute for Food and Drug Control, Key Laboratory of Supervising Technology for Meat and Meat Products for State Market Regulation, Shandong Research Center of Engineering and Technology for Quality Control of Food for Special Medical Purposes, Shandong Research Center of Engineering and
  • Feng J; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China. Electronic address: chm_fengjuanjuan@ujn.edu.cn.
  • Sun M; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China. Electronic address: chm_sunm@ujn.edu.cn.
J Chromatogr A ; 1732: 465200, 2024 Sep 13.
Article en En | MEDLINE | ID: mdl-39096780
ABSTRACT
A covalent organic framework (COF) was gown on porous silica with 1,3,5-tri(4-aminophenyl)benzene and 2,5-divinyl-1,4-phenyldiformaldehyde as monomers, and two ionic liquids were grafted to COF by a click reaction. The materials before and after the modification of ionic liquids were separately packed into solid-phase extraction columns (10 × 4.6 mm, i.d.), which were coupled with liquid chromatography to construct online analysis systems. The extraction mechanisms of polycyclic aromatic hydrocarbons, bisphenols, diphenylalkanes and benzoic acids were investigated on these materials. There were π-π, hydrogen-bond and electrostatic interactions on ionic liquid-functionalized sorbents. After the comparison among these materials, the best sorbent was used, and the analytical method was established and successfully applied to the detection of some estrogens from actual samples. For the analytical method, the detection limit was as low as 0.005 µg L-1, linear range was as wide as 0.017-10.0 µg L-1, and enrichment ratio was as high as 3635. The recoveries in actual samples were 70 %-129 %.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Dióxido de Silicio / Líquidos Iónicos / Extracción en Fase Sólida / Límite de Detección Idioma: En Revista: J Chromatogr A Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Dióxido de Silicio / Líquidos Iónicos / Extracción en Fase Sólida / Límite de Detección Idioma: En Revista: J Chromatogr A Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos