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Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
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Covalent triazine-based framework for micro solid-phase extraction of parabens.

Ali Shahvar1, Roozbeh Soltani1, Mohammad Saraji1

  • 1Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran.

Journal of Chromatography. A
|June 21, 2018
PubMed
Summary

Magnetic nanoparticles with a covalent triazine-based framework were developed as a novel sorbent. This material efficiently extracts parabens from various matrices using micro solid-phase extraction.

Keywords:
Breast milkCovalent triazine-based frameworkMicro solid-phase extractionParabensPersonal care productsWastewater

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Environmental Science

Background:

  • Covalent triazine-based frameworks (CTFs) offer tunable porosity and high surface area.
  • Magnetic nanoparticles provide ease of separation and recovery.
  • Parabens are widely used preservatives with potential endocrine-disrupting effects.

Purpose of the Study:

  • To synthesize and characterize nano-sized covalent triazine-based framework grafted magnetic particles (CTF-g-MPs).
  • To investigate the application of CTF-g-MPs as a sorbent for micro solid-phase extraction (µSPE) of parabens.
  • To develop and validate an analytical method for paraben determination in complex matrices.

Main Methods:

  • Facile Friedel-Crafts reaction for CTF-g-MP synthesis.
  • Material characterization using FTIR, XRD, FESEM, TGA, and BET analysis.
  • µSPE coupled with High-Performance Liquid Chromatography (HPLC) with UV detection.

Main Results:

  • Successful synthesis and characterization of CTF-g-MPs with high surface area.
  • Optimized µSPE method demonstrated efficient paraben extraction via π-π stacking interactions.
  • The method achieved a linearity range of 0.1-500 µg L⁻¹, a detection limit of 0.02 µg L⁻¹, and good recovery (86-102%) in real samples.

Conclusions:

  • CTF-g-MPs are effective sorbents for µSPE of parabens.
  • The developed method is sensitive, selective, and suitable for paraben analysis in diverse real-world samples.
  • This approach offers a promising tool for monitoring environmental and human exposure to parabens.