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In-syringe dispersive solid phase extraction: a novel format for electrospun fiber based microextraction.

Gang-Tian Zhu1, Xiao-Mei He, Bao-Dong Cai

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A new in-syringe dispersive solid phase extraction (dSPE) system uses electrospun silica fibers for rapid microextraction. This high-throughput method simplifies sample pretreatment and efficiently extracts plant cytokinins.

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Biochemistry

Background:

  • Sample preparation is crucial for accurate analysis.
  • Traditional methods can be time-consuming and complex.
  • Novel extraction materials offer improved efficiency.

Purpose of the Study:

  • To develop a novel in-syringe dispersive solid phase extraction (dSPE) system.
  • To utilize electrospun silica fibers as efficient adsorbents.
  • To create a rapid and high-throughput microextraction method.

Main Methods:

  • Development of an in-syringe dSPE system with electrospun silica fibers.
  • Vortex-assisted microextraction for rapid equilibrium.
  • Simplified adsorbent-sample separation via syringe plunger.
  • High-throughput analysis using a multi-syringe plate.
  • Liquid chromatography-mass spectrometry (LC-MS) for detection.

Main Results:

  • Achieved extraction equilibrium in under 1 minute due to fiber dispersion and high mass transfer.
  • Facilitated easy adsorbent separation, simplifying sample pretreatment.
  • Demonstrated high-throughput potential with a multi-syringe plate.
  • Successfully extracted and determined six endogenous cytokinins from Oryza sativa leaves.
  • Validated the method for microscale sample pretreatment.

Conclusions:

  • The in-syringe dSPE system using electrospun silica fibers is a rapid and efficient extraction strategy.
  • This method significantly simplifies sample pretreatment procedures.
  • The system offers high analytical throughput, suitable for complex sample analysis.
  • It shows great potential for microscale sample pretreatment applications.