Developments in dynamic field gradient focusing: microfluidics and integration

by Wray, Thomas

Type Thesis
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Advances in modern science require the development of more robust and improved systems for electroseparations in chromatography. In response, the progress of a new analytical platform is discussed. DFGF (Dynamic Field Gradient Focusing) is a separation technique, first described in 1998, which exploits the differences in electrophoretic mobility and hydrodynamic area of analytes to result in separation. This is achieved by taking a channel and applying a hydrodynamic flow in one direction and a…

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Summary

Advances in modern science require the development of more robust and improved systems for electroseparations in chromatography. In response, the progress of a new analytical platform is discussed. DFGF (Dynamic Field Gradient Focusing) is a separation technique, first described in 1998, which exploits the differences in electrophoretic mobility and hydrodynamic area of analytes to result in separation. This is achieved by taking a channel and applying a hydrodynamic flow in one direction and a counteracting electric field gradient acting in the opposite direction, resulting in analytes reaching a focal point according to their electrophoretic mobility. Work through this project has seen innovations to improve existing DFGF devices, including the design and manufacture of a novel packing material, while developing the latest DFGF system. This incorporates a microfluidic separation channel, eliminating the need for packing material or monolith. The new microfluidic device also features whole-on-column UV detection. Improvements through the developments of this device are discussed, most notably the utilisation of a new rapid prototyping technique. Examples of applications undertaken with the new device are demonstrated including novel samples and integration with mass spectrometry and 2D-HPLC.

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Edition Statements

  • Publication Date:2012

Thesis Information

  • Degree:Ph.D.
  • University:University of Liverpool
  • Advisor/Supervisor:Myers, Peter

Publication Statements

  • Language:eng
  • Publication Date:2012

Edition Identifiers

  • ethos:564249

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