Hydrodynamic Electrochemistry in 20 .MU.L Drops in the Rotating Sample System

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  • SHETTY Gautam N.
    Department of Biomedical Engineering CASE (Case Western Reserve University)
  • SYED Nilofar
    Department of Biomedical Engineering CASE (Case Western Reserve University)
  • TOHDA Koji
    Department of Biomedical Engineering CASE (Case Western Reserve University)
  • GRATZL Miklós
    Department of Biomedical Engineering CASE (Case Western Reserve University)

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  • Hydrodynamic Electrochemistry in 20 μL Drops in the Rotating Sample System
  • Hydrodynamic Electrochemistry in 20 ミュー L Drops in the Rotating Sample System

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Description

The Rotating Sample System (RSS) has been conceived in the authors' laboratory as a convection platform for microliter-sized solution volumes. Convection is achieved by rotating a small drop of sample on a stationary substrate by humidified gas jets directed tangentially at the drop base with the working electrode and a liquid junction embedded in it. Simplicity and portability of the device, and substrates complete with microfabricated electrode and junction made potentially disposable, are further competitive advantages with respect to competing, conventional analytical systems. In this work the RSS' performance with variation of system parameters such as the position and size of gas jets used for sample rotation, and position of the working electrode in the substrate are studied. Trace levels of Pb could be detected with this system and is reported here.

Journal

  • Analytical Sciences

    Analytical Sciences 21 (10), 1155-1160, 2005

    The Japan Society for Analytical Chemistry

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