Interferent-free electrochemical detection of nitrate in water using copper–cobalt-based sensor

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dc.contributor.authorDas, Daisyen
dc.contributor.authorO'Riordan, Alanen
dc.contributor.authorShao, Hanen
dc.contributor.funderDepartment of Agriculture, Food and the Marine, Irelanden
dc.contributor.funderResearch Irelanden
dc.date.accessioned2025-11-06T12:22:34Z
dc.date.available2025-11-06T12:22:34Z
dc.date.issued2025-07-24en
dc.description.abstractNitrate contamination in water is a significant global concern, prompting regulatory bodies such as the European Union to set a maximum permissible limit of 44 mg/L in drinking water. However, conventional laboratory-based detection methods are time-consuming and require specialized expertise, while chemical electrode systems often suffer from drawbacks such as frequent recalibration and ion cross sensitivity, limiting their suitability for long-term and on-site monitoring. In response to these challenges, we present a novel and cost-effective electrochemical sensor based on a copper–cobalt-based electrochemical sensor for reliable nitrate detection. The sensor exhibits a remarkable true detection limit of 0.19 µM and a limit of quantification of 4.41 µM and demonstrates high selectivity even in the presence of commonly interfering ions such as Mg2+, SO42-, Zn2+, K+, NH4+, Fe2+, and Na+. Owing to its sensitivity, selectivity, and portability, the developed sensor offers a promising solution for real-time, on-site monitoring of nitrate concentrations in both water and soil samples.en
dc.description.sponsorshipDepartment of Agriculture, Food and the Marine, Ireland (Grant 2022EJPSOIL202; Grant 2023RP1040); Research Ireland (Grant 21/RC/10303_P2 – VistaMilk)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid4501804en
dc.identifier.citationDas, D., O'Riordan, A. and Shao, H. (2025) Interferent-free electrochemical detection of nitrate in water using copper–cobalt-based sensor', IEEE Sensors Letters, 9(9), 4501804, pp. 1-4. https://doi.org/10.1109/LSENS.2025.3592316en
dc.identifier.doi10.1109/lsens.2025.3592316en
dc.identifier.endpage4en
dc.identifier.issn2475-1472en
dc.identifier.issued9en
dc.identifier.journaltitleIEEE Sensors Lettersen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/18156
dc.identifier.volume9en
dc.language.isoenen
dc.publisherIEEEen
dc.relation.ispartofIEEE Sensors Lettersen
dc.rights© 2025, IEEE. All rights reserved, including rights for text and data mining, and training of artificial intelligence and similar technologies. Personal use is permitted, but republication/redistribution requires IEEE permission. See https://www.ieee.org/publications/rights/index.html for more information.en
dc.subjectChemical and biological sensorsen
dc.subjectNanomaterialen
dc.subjectNitrate detectionen
dc.subjectReal-time monitoringen
dc.subjectWater contaminationen
dc.titleInterferent-free electrochemical detection of nitrate in water using copper–cobalt-based sensoren
dc.typeArticle (peer-reviewed)en
dc.typejournal-articleen
oaire.citation.issue9en
oaire.citation.volume9en
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