The University of Southampton
Chemistry

Research project: Denuault: Electrochemical sensors for Oceanography

Currently Active: 
Yes

In collaboration with the Ocean Engineering Division at the National Oceanography Centre Southampton we are developing microelectrode dissolved oxygen sensors for the measurement of deep sea oxygen profiles.

Project Overview

The figures illustrate a prototype which we successfully tested in the laboratory and deployed on a conductivity, temperature, depth (CTD) probe. This sensor was based on the steady state response of microdisc electrodes. We are currently investigating new sensors based on the transient response of the microdiscs.

Click on image to enlarge

Electrochemical DO sensor: (i) schematics of the flow cell and electrodes, (ii) device mounted on the fin of a CTD, (iii) close up of the device.

 

 

From:

Sosna, Oxygen Reduction at Microelectrodes: Application to the Dissolved Oxygen Sensor for in situ Oceanographic Measurements, PhD thesis, University of Southampton, Southampton, 2006.

Sosna, Denuault, Pascal, Prien and Mowlem, Development of a reliable microelectrode dissolved oxygen sensor, Sensors and Actuators B, 123, 2007, 344-351.

Sosna, Denuault, Pascal, Prien, Mowlem, Field assessment of a new membrane-free microelectrode dissolved oxygen sensor for water column profiling. Journal of Limnology and Oceanography: Methods, 6, 2008, 180–189.

Related research groups

Electrochemistry
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