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Amperometric measurement of gaseous hydrogen sulfide via a Clark-type approach

Horn, Jason J.; Wadhawan, Jay; Mccreedy, Tom

Authors

Jason J. Horn

Tom Mccreedy T.McCreedy@hull.ac.uk



Abstract

The direct oxidation of hydrogen sulfide in the range 2.0-20 parts per million by volume (ppmv) using a Clark-type amperometric gas sensing methodology is investigated via amperometric transients at 298 K. The diluent gas employed is air (20.9% O-2 in N-2), and it is shown that the observed current transients are limited by transport through the membrane covering, reaching a steady-state value within at least 200 s for one of the manifestations described. The measurement system presented is shown to be operational over a long time (tens of hours), provided certain quantification protocols are employed; the latter are suggested as pragmatic guidelines for the deployment of this detection methodology. Importantly and notably, it is shown that readily-oxidizable gases such as carbon monoxide and molecular hydrogen are observed not to interfere with the measurement quantification.

Journal Article Type Article
Publication Date Sep 1, 2010
Journal ANALYTICAL METHODS
Print ISSN 1759-9660
Electronic ISSN 1759-9679
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 2
Issue 9
Pages 1346-1354
APA6 Citation Horn, J. J., Wadhawan, J., & Mccreedy, T. (2010). Amperometric measurement of gaseous hydrogen sulfide via a Clark-type approach. Analytical Methods, 2(9), 1346-1354. doi:10.1039/c0ay00338g
DOI https://doi.org/10.1039/c0ay00338g
Keywords Platinum-electrodes; Carbon-dioxide; Oxidation