Nano electrode arrays for in-situ identification and quantification of chemicals in water.

Gurule, Natalia J. ; Kelly, Michael James ; Brevnov, Dmitri A. (University of New Mexico, Albuquerque, NM) ; Ashby, Carol Iris Hill ; Pfeifer, Kent Bryant ; Yelton, William Graham

Sandia National Laboratories

关键词: Nanostructures;    Potentiostats;    Electrochemical Cells;    Electrodes;    Water-Analysis.;   

DOI  :  10.2172/920812
RP-ID  :  SAND2004-6229
RP-ID  :  AC04-94AL85000
RP-ID  :  920812

美国|英语

来源: UNT Digital Library

【 摘 要 】

The nano electrode arrays for in-situ identification and quantification of chemicals in water progress in four major directions. (1) We developed and engineering three nanoelectrode array designs which operate in a portable field mode or as distributed sensor network for water systems. (2) To replace the fragile glass electrochemical cells using in the lab, we design and engineered field-ready sampling heads that combine the nanoelectrode arrays with a high-speed potentiostat. (3) To utilize these arrays in a portable system we design and engineered a light weight high-speed potentiostat with pulse widths from 2 psec. to 100 msec. or greater. (4) Finally, we developed the parameters for an analytical method in low-conductivity solutions for Pb(II) detection, with initial studies for the analysis of As(III) and As(V) analysis in natural water sources.