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Opto-isolation of electrochemical systems in cavitation environments

Opto-isolation of electrochemical systems in cavitation environments
Opto-isolation of electrochemical systems in cavitation environments
An electrochemical technique that can detect inertial cavitation within an ultrasonic reactor is reported. The technique relies on the erosion and repassivation of an oxide covered electrode (specifically aluminum). The sensitivity of the technique (<46 fg per erosion event) is significantly greater than normal weight loss measurements. A novel opto-isolation system is discussed which enables the electrochemical measurements to be undertaken within an earthed metallic container. Events detected in this manner are reported and compared to the noise in the absence of appropriate isolation. This system is combined with a multichannel analyzer to map the erosion/corrosion activity within an operating ultrasonic bath.
0003-2700
5064-5069
Vian, Christopher J.B.
c5ca4c67-5a34-475e-b99b-04593f9c6cc9
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Leighton, Timothy G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Vian, Christopher J.B.
c5ca4c67-5a34-475e-b99b-04593f9c6cc9
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Leighton, Timothy G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae

Vian, Christopher J.B., Birkin, Peter R. and Leighton, Timothy G. (2009) Opto-isolation of electrochemical systems in cavitation environments. Analytical Chemistry, 81 (12), 5064-5069. (doi:10.1021/ac802561k). (PMID:19441826)

Record type: Article

Abstract

An electrochemical technique that can detect inertial cavitation within an ultrasonic reactor is reported. The technique relies on the erosion and repassivation of an oxide covered electrode (specifically aluminum). The sensitivity of the technique (<46 fg per erosion event) is significantly greater than normal weight loss measurements. A novel opto-isolation system is discussed which enables the electrochemical measurements to be undertaken within an earthed metallic container. Events detected in this manner are reported and compared to the noise in the absence of appropriate isolation. This system is combined with a multichannel analyzer to map the erosion/corrosion activity within an operating ultrasonic bath.

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Published date: 2009

Identifiers

Local EPrints ID: 148659
URI: http://eprints.soton.ac.uk/id/eprint/148659
ISSN: 0003-2700
PURE UUID: 9cb28ab0-ade7-4d81-8c94-90d529e6969b
ORCID for Peter R. Birkin: ORCID iD orcid.org/0000-0002-6656-4074
ORCID for Timothy G. Leighton: ORCID iD orcid.org/0000-0002-1649-8750

Catalogue record

Date deposited: 30 Apr 2010 09:23
Last modified: 29 Oct 2019 02:07

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