Detecting heavy metals in solution using electronic-tongue 3 REDOX water quality sensors

Author

Kuhlman, Gregory M. ; Keymeulen, Didier ; Buehler, Martin G. ; Kounaves, Samuel P.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

1

fYear

2004

fDate

6-13 March 2004

Abstract

This paper describes results obtained from the E-Tongue 3 apparatus used to characterize residual contaminates in water. This apparatus is intended for use in water quality measurements for the ISS (International Space Station). The apparatus contains nine planar electrochemical cells and a conductivity sensor. Detection of contaminate ions in solution uses ASV (anodic stripping voltammetry) with a detection limit in the 10 μM range. A linear calibration curve was achieved using Zn, Pb, Cu, and Mn cations. A robust method for identifying electroactive species is presented and uses the Savitzky-Golay second derivative method.

Keywords

electrochemical sensors; positive ions; voltammetry (chemical analysis); water pollution measurement; E-Tongue 3 apparatus; International Space Station; REDOX; Savitzky-Golay second derivative method; anodic stripping voltammetry; cations; conductivity sensor; contaminate ions; electroactive species identification; electronic-tongue 3; heavy metals detection; linear calibration curve; planar electrochemical cells; residual water contaminates; water quality measurements; water quality sensors; Amperometric sensors; Calibration; Chemical sensors; Conductivity; Electrodes; Pollution measurement; Sensor arrays; Sensor phenomena and characterization; Temperature sensors; Tongue;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace Conference, 2004. Proceedings. 2004 IEEE

ISSN

1095-323X

Print_ISBN

0-7803-8155-6

Type

conf

DOI

10.1109/AERO.2004.1367620

Filename

1367620