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A flow injection μ-solid phase extraction system based on electrospun polyaniline nanocomposite.

Habib Bagheri1, Peyman Khanipour1, Ali Roostaie1

  • 1Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran.

Journal of Chromatography. A
|January 26, 2016
PubMed
Summary

A novel electrospun polyaniline (PANI) nanocomposite enables fast and sensitive analysis of triazines in water using flow injection micro-solid phase extraction (FI-μ-SPE) coupled with gas chromatography-mass spectrometry (GC-MS). This method offers reliable detection for environmental monitoring.

Keywords:
ElectrospinningFlow injection μ-solid phase extractionGas chromatography–mass spectrometryPolyanilineTriazines

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Environmental Science

Background:

  • Triazine herbicides are widely used but pose environmental risks.
  • Sensitive and rapid analytical methods are needed for triazine detection in aquatic media.
  • Existing methods may lack efficiency or require complex sample preparation.

Purpose of the Study:

  • To develop a fast and sensitive analytical method for triazine detection.
  • To synthesize and characterize a novel polyaniline (PANI)-based nanocomposite for micro-solid phase extraction (μ-SPE).
  • To apply the developed method for triazine analysis in various water samples.

Main Methods:

  • Synthesis of polyaniline (PANI)/polyvinyl alcohol (PVA) nanofibers via electrospinning.
  • Removal of PVA template using hot water to create a porous nanofibrous sorbent.
  • Application of flow injection μ-SPE (FI-μ-SPE) coupled with gas chromatography-mass spectrometry (GC-MS).
  • Characterization using scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy.

Main Results:

  • The PANI-based nanocomposite exhibited excellent sorbent properties for triazines.
  • Optimized FI-μ-SPE achieved low limits of detection (0.03-0.09 ng mL⁻¹).
  • High linearity (0.1-500 ng mL⁻¹) and good precision (RSD 8.9-9.5%) were demonstrated.
  • Successful validation in real water samples (paddy, well, tap) with high recovery rates (83-95%).

Conclusions:

  • The developed FI-μ-SPE method using PANI nanocomposite is highly effective for sensitive and rapid triazine determination.
  • The method is robust and suitable for routine environmental water quality monitoring.
  • This approach offers a promising alternative for the analysis of emerging contaminants.