Hydrodynamic Electrochemistry in 20 μL Drops in the Rotating Sample System

SHETTY Gautam N., SYED Nilofar, TOHDA Koji, GRATZL Miklós

doi:10.2116/analsci.21.1155

Hydrodynamic Electrochemistry in 20 μL 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)

書誌事項

タイトル別名

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

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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.