On-chip electrochemical microsystems for measurements of copper and conductivity in artificial seawater - Archive ouverte HAL Access content directly
Journal Articles Talanta Year : 2013

On-chip electrochemical microsystems for measurements of copper and conductivity in artificial seawater

(1) , (1) , (1) , (1) , (1)
1

Abstract

The fabrication and characterisation of microelectrochemical sensors for Cu2+ and conductivity suitable for operation in the marine environment are presented. The impact of the designs on sensor performance and their adequacy to operate in real conditions are discussed. The sensors, tailored to voltammetric and impedimetric measurements, are fabricated on silicon using photolithographic and thin film deposition techniques. The impedimetric sensor is made of Pt interdigitated electrodes which are used for the measurement of conductivity. The voltammetric sensors are based on a three electrode electrochemical cell with on-chip Ag vertical bar AgCl reference and Pt counter and working electrodes, used for detection of copper by underpotential deposition-stripping voltammetry at microelectrode array. The sensors operated in the Cu2+ concentrations ranging from 0.48 to 3.97 mu M with a limit of detection of 0.115 mu M. The impact of the temperature, the pH and the salinity of the artificial seawater on the sensitivity for Cu2+ detection are also considered. Measurements of copper concentration and conductivity are validated using certified reference materials and standard solutions.
Fichier principal
Vignette du fichier
38-postprint.pdf (772.94 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01505378 , version 1 (09-11-2018)

Identifiers

Cite

Gregoire Herzog, Waleed Moujahid, Karen Twomey, Conor Lyons, Vladimir I. Ogurtsov. On-chip electrochemical microsystems for measurements of copper and conductivity in artificial seawater. Talanta, 2013, 116, pp.26-32. ⟨10.1016/j.talanta.2013.04.057⟩. ⟨hal-01505378⟩
50 View
264 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More