Mercury droplet microelectrode sensor on lab-on-a-chip for heavy metal ion detection

Author

Xiao-Shan Zhu ; Chuan Gao ; Jin-Woo Choi ; Bishop, P.L. ; Ahn, C.H.

Author_Institution

Dept. of Electr. & Comput. Eng. & Comput. Sci., Cincinnati Univ., OH, USA

Volume

1

fYear

2003

Firstpage

61

Abstract

A novel microfabricated mercury droplet electrode sensor has been designed, fabricated and characterized for heavy ion metal detection in the application of environmental pollution monitoring using an on-chip mercury droplet generation technique. The mercury droplet has been uniformly generated and controlled from on-chip mercury reservoir by thermopneumatic actuation and surface tension effect of mercury droplet. The mercury droplet electrode sensor has been integrated on a lab-on-a-chip system for easy control of mercury droplet and liquid samples. The polluted liquid samples with different concentration of Pb/sup 2+/ and Cd/sup 2+/ have been successfully detected and characterized on the mercury droplet electrode sensor using the square wave anodic stripping voltammetry (SWASV).

Keywords

cadmium; electrochemical electrodes; electrochemical sensors; lead; mercury (metal); microelectrodes; microsensors; system-on-chip; Cd; Hg; Pb; environmental pollution monitoring; heavy metal ion detection; lab-on-chip mercury droplet reservoir; liquid samples; mercury droplet microelectrode sensor; square wave anodic stripping voltammetry; surface tension; thermopneumatic actuation; Character generation; Electrodes; Lab-on-a-chip; Microelectrodes; Monitoring; Pollution; Reservoirs; Sensor phenomena and characterization; Sensor systems; Surface tension;

fLanguage

English

Publisher

ieee

Conference_Titel

TRANSDUCERS, Solid-State Sensors, Actuators and Microsystems, 12th International Conference on, 2003

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7731-1

Type

conf

DOI

10.1109/SENSOR.2003.1215253

Filename

1215253