Title :
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
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;
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
DOI :
10.1109/SENSOR.2003.1215253
