Removal of dissolved oxygen interference in the amperometric detection of monochloramine using a pH control method

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Date
2019-10-27
Authors
Seymour, Ian P.
O'Sullivan, Benjamin
Lovera, Pierre
Rohan, James F.
O'Riordan, Alan
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Publisher
Institute of Electrical and Electronics Engineers, IEEE
Published Version
10.1109/SENSORS43011.2019.8956674
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Abstract
Monochloramine amperometric determination was investigated using a pH control method to eliminate dissolved oxygen as an interferent. This method allowed local pH conditions to become more acidic, causing the production of dichloramine. This species showed an onset of electro-reduction at 450 mV, far outside of the oxygen reduction region. Monochloramine was calibrated using this method and showed good linearity (0.99) and a limit of detection of 0.03 ppm.
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Keywords
Dissolved oxygen , Dual electrode sensors , Generator-Collector , In-line sensing , Monochloramine , pH , Water quality
Citation
Seymour, I., O’Sullivan, B., Lovera, P., Rohan, J. F. and O’Riordan, A. (2019) 'Removal of Dissolved Oxygen Interference in the Amperometric Detection of Monochloramine Using a pH Control Method', 2019 IEEE SENSORS, Montreal, QC, Canada, 27-30 Oct. 2019, (4 pp). doi: 10.1109/SENSORS43011.2019.8956674
Link to publisher’s version
https://ieeexplore.ieee.org/document/8956674
URI
https://hdl.handle.net/10468/11483
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Tyndall National Institute - Conference Items
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© 2019 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.