On-chip generated mercury microelectrode for heavy metal ion detection.

Zhu, Xiao-Shan; Gao, Chuan; Choi, Jin-Woo; Bishop, Paul L; Ahn, Chong H · Lab Chip · 2005

basic_science · Level V

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Abstract

In this paper, the on-chip generated mercury microelectrode for heavy metal ion detection has been presented. A mercury droplet (approximately 150 microm in diameter) is on-chip generated to form a microelectrode through the mercury microfluidics control. The mercury microelectrode is used to electrochemically detect the heavy metal ions. The sample solutions with different concentration of heavy metal ions (Pb(2+) and Cd(2+)) have been successfully detected on the mercury droplet microelectrode using the square wave stripping voltammetry.