Title :
Improved design of electronic tongue integrated MEA with MLAPS for environmental monitoring
Author :
ZOU, Shaofang ; Men, Hong ; LI, Yi ; WANG, Yinping ; Xia, Shanhong ; Wang, Ping
Author_Institution :
Dept. of Biomed. Eng., Zhejiang Univ., Hangzhou
fDate :
Oct. 30 2005-Nov. 3 2005
Abstract :
A novel integrated electronic tongue has been developed for the concentration determination of trace heavy metal ions in aqueous media. It combines an Au microelectrodes array (AuMEA) with a multiple lightaddressable potentiometric sensor (MLAPS) on a silicon substrate. AuMEA contains 30 times 30 individual 10 mum diameter Au disk microelectrodes, upon which thin mercury film is electrodeposited. Square-wave anodic-stripping voltammetry (SWASV) is used for simultaneous analysis of Zn(II), Cd(II), Pb(II) and Cu(II) with AuMEA. Parallel detections of Fe(III) and Cr(VI) are based on MLAPS with two ion-selective chalcogenide thin films which are formed on two 2mm times 2mm Au surfaces. Measure results show parts-per-billion sensitivity of the six ions mentioned above
Keywords :
cadmium; chemical sensors; chromium; copper; electrodeposition; gold; iron; lead; mercury (metal); microelectrodes; pollution measurement; silicon; voltammetry (chemical analysis); zinc; Au; Cd; Cr; Cu; Fe; Hg; MLAPS; Pb; Si; Zn; concentration determination; electrodeposition process; electronic tongue; environmental monitoring; integrated MEA; ion-selective chalcogenide thin film; microelectrodes array; multiple light-addressable potentiometric sensor; square-wave anodic-stripping voltammetry; trace heavy metal ion; Chemical sensors; Fabrication; Glass; Gold; Microelectrodes; Monitoring; Pollution measurement; Sensor arrays; Tongue; Transistors;
Conference_Titel :
Sensors, 2005 IEEE
Conference_Location :
Irvine, CA
Print_ISBN :
0-7803-9056-3
DOI :
10.1109/ICSENS.2005.1597972
