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Related Concept Videos

Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
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High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.

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Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape
07:38

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Published on: January 8, 2014

Parallel, fluorous open-tubular chromatography using microstructured fibers.

Adam B Daley1, Ramin D Wright, Richard D Oleschuk

  • 1Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada.

Analytica Chimica Acta
|March 26, 2011
PubMed
Summary
This summary is machine-generated.

Microstructured fibers (MSFs) offer a novel platform for open-tubular liquid chromatography (OTLC) columns. These MSF-based columns overcome previous limitations, enabling enhanced performance and easier integration into existing systems.

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Area of Science:

  • Analytical Chemistry
  • Chromatography

Background:

  • Open-tubular columns for liquid chromatography (OTLC) face development challenges due to small diameters and specialized requirements.
  • Existing OTLC designs often necessitate unique detection systems and struggle with practical implementation.

Purpose of the Study:

  • To introduce microstructured fibers (MSFs) as a versatile platform for developing multiplexed OTLC columns.
  • To address the limitations of traditional OTLC columns by leveraging the unique properties of MSFs.

Main Methods:

  • Fabrication of OTLC columns using microstructured fibers (MSFs) with multiple parallel silica channels.
  • Functionalization of MSF columns using silane coupling techniques to introduce various stationary phases, including fluorine-functionalized phases.
  • Evaluation of the physical and performance characteristics of the fabricated MSF-based OTLC columns.

Main Results:

  • MSFs provide ideal channel diameters (1-3 μm) for chromatographic interactions.
  • Multiple uniform channels in MSFs minimize backpressure and increase loading capacity compared to single-channel columns.
  • MSF columns are compatible with conventional chromatographic systems, requiring no specialized equipment.

Conclusions:

  • MSFs present a promising substrate for advanced OTLC column development.
  • The modular nature of MSF columns allows for diverse stationary phase chemistries.
  • This approach overcomes key limitations, paving the way for improved OTLC performance and broader application.