The University of Southampton
University of Southampton Institutional Repository

Field assessment of a new membrane-free microelectrode dissolved oxygen sensor for water column profiling

Sosna, Maciej, Denuault, Guy, Pascal, Robin W., Prien, Ralf D. and Mowlem, Matt (2008) Field assessment of a new membrane-free microelectrode dissolved oxygen sensor for water column profiling Limnology and Oceanography: Methods, 6, pp. 180-189. (doi:10.4319/lom.2008.6.180).

Record type: Article

Abstract

This article reports on the field trials of a membrane-free amperometric microelectrode dissolved oxygen sensor, which were performed during oceanographic cruise D279 of RRS Discovery. The sensor was used to obtain full depth oxygen profiles while mounted on a wire-operated CTD (conductivity, temperature, depth) instrument. A stable performance was achieved by carefully designed electrochemical cleaning conditions of the sensing platinum microdisk cathode. The flow issues inherent to moving probes were resolved by a novel stop-flow cell fitted with a pumping system for sample exchange and flow control. The details of the sensor operation, calibration, and construction, including the flow control system, are described. The sensor response is validated by calibration and by an analytical approach that yields oxygen data directly from the current readings. The accuracy of the microelectrode response is critically assessed using Winkler titrations on bottle samples taken during the relevant sensor deployments. The results lead to the conclusion that due to high accuracy, fast response time, and lack of membrane-related problems the device is particularly suitable for moving probes and high spatial resolution water column oxygen profiling.

Full text not available from this repository.

More information

Published date: April 2008
Keywords: mn, aquatic systems, oceanic ctds, electrolyte-solutions, fe, microstructure, voltammetric microelectrode, o-2, sea-floor, copper

Identifiers

Local EPrints ID: 54506
URI: http://eprints.soton.ac.uk/id/eprint/54506
ISSN: 1541-5856
PURE UUID: 54f46d3e-3193-4c64-980e-cb60f8c5310a
ORCID for Guy Denuault: ORCID iD orcid.org/0000-0002-8630-9492

Catalogue record

Date deposited: 19 Aug 2008
Last modified: 17 Jul 2017 14:35

Export record

Altmetrics

Contributors

Author: Maciej Sosna
Author: Guy Denuault ORCID iD
Author: Robin W. Pascal
Author: Ralf D. Prien
Author: Matt Mowlem

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×