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Proceedings Paper

Integration of microfluidics/electrochemical system for trace metal analysis by stripping voltammetry
Author(s): Yuehe Lin; Rui Zhao; Karla D. Thrall; C. A. Timchalk; Wendy D. Bennett; Dean W. Matson
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Paper Abstract

Microanalytical systems based on a microfluidics/electrochemical detection scheme were developed. Individual modules, such as microfabricated piezoelectrically actuated pumps and a microelectrochemical cell were integrated onto portable platforms. This allows rapid change-out and repair of individual components by incorporating `plug and play' concepts now standard in PC's. Two different integration schemes were used for construction of the microanalytical systems based on microfluidics/electrochemical detection. In first scheme, all individual modules were integrated in the surface of the standard microfluidic platform based on a plug-and-play design. Microelectrochemical flow cell which integrated three electrodes based on a wall-jet design was fabricated on polymer substrate. The microelectrochemical flow cell was then plugged directly into the microfluidic platform. Another integration scheme was based on a multilayer lamination method utilizing stacking modules with different functionality to achieve a compact microanalytical device. Application of the microanalytical system for detection of lead in river water and saliva samples using stripping voltammetry is described.

Paper Details

Date Published: 19 August 1999
PDF: 9 pages
Proc. SPIE 3877, Microfluidic Devices and Systems II, (19 August 1999); doi: 10.1117/12.359343
Show Author Affiliations
Yuehe Lin, Pacific Northwest National Lab. (United States)
Rui Zhao, Pacific Northwest National Lab. (United States)
Karla D. Thrall, Pacific Northwest National Lab. (United States)
C. A. Timchalk, Pacific Northwest National Lab. (United States)
Wendy D. Bennett, Pacific Northwest National Lab. (United States)
Dean W. Matson, Pacific Northwest National Lab. (United States)

Published in SPIE Proceedings Vol. 3877:
Microfluidic Devices and Systems II
Chong Hyuk Ahn; A. Bruno Frazier, Editor(s)

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