Hydrodynamic ultramicroelectrodes: kinetic and analytical applications
UNSPECIFIED (2001) Hydrodynamic ultramicroelectrodes: kinetic and analytical applications. In: 3rd International Symposium on Electrochemical Microsystem Technologies (EMT-3), GARMISCH-PARTENKIRCHEN, GERMANY, SEP 10-15, 2000. Published in: ELECTROCHIMICA ACTA, 47 (1-2). pp. 29-45.Full text not available from this repository.
This review considers the development and application of hydrodynamic ultramicroelectrodes (H-UMEs). These electrochemical systems comprise an amperometric UME, with a characteristic dimension on the micrometre or sub-micrometre scale, operated in a well-defined convective- diffusive regime. The greatly enhanced mass-transport rates that can be attained quantitatively at H-UMEs, over a wide dynamic range, has considerable benefits in terms of measuring fast kinetics and in analytical applications. Four types of H-UMEs are assessed: (i) fast-flow tubular and channel microelectrodes; (ii) a dropping mercury microelectrode; (iii) a microscopic wall-tube electrode, termed the microjet electrode (MJE); and (iv) a radial flow micro-ring electrode (RFMRE). Hydrodynamic modulation methods are also described, that can be used in association with UMEs to extend amperometric detection limits. Finally, possible future directions for H-UMEs are considered briefly, along with new methods for enhancing the timescale of dynamic electrochemical measurements. (C) 2001 Elsevier Science Ltd. All rights reserved.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||Q Science > QD Chemistry|
|Journal or Publication Title:||ELECTROCHIMICA ACTA|
|Publisher:||PERGAMON-ELSEVIER SCIENCE LTD|
|Official Date:||1 September 2001|
|Number of Pages:||17|
|Page Range:||pp. 29-45|
|Title of Event:||3rd International Symposium on Electrochemical Microsystem Technologies (EMT-3)|
|Location of Event:||GARMISCH-PARTENKIRCHEN, GERMANY|
|Date(s) of Event:||SEP 10-15, 2000|
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