{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T18:30:38Z","timestamp":1783103438923,"version":"3.54.6"},"reference-count":61,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,1,22]],"date-time":"2023-01-22T00:00:00Z","timestamp":1674345600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Research &amp; Innovation, Ministry of Education, Saudi Arabia","award":["IFP-2022-45"],"award-info":[{"award-number":["IFP-2022-45"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>To protect consumers from risks related to overexposure to sulfadiazine, total residues of this antibacterial agent in animal-origin foodstuffs not exceed international regulations. To this end, a new electrochemical sensor based on a molecularly imprinted polymer nanocomposite using overoxidized polypyrrole and copper nanoparticles for the detection of sulfadiazine is elaborated. After optimization of the preparation of the electrochemical sensors, their differential pulse voltammetric signal exhibits an excellent stability and reproducibility at 1.05 V, with a large linear range between 10\u22129 and 10\u22125 mol L\u22121 and a low detection limit of 3.1 \u00d7 10\u221210 mol L\u22121. The produced sulfadiazine sensor was successfully tested in real milk samples. The combination of the properties of the electrical conduction of copper nanoparticles with the properties of the preconcentration of the molecularly imprinted overoxidized polypyrrole allows for the highly sensitive detection of sulfadiazine, even in real milk samples. This strategy is new and leads to the lowest detection limit yet achieved, compared to those of the previously published sulfadiazine electrochemical sensors.<\/jats:p>","DOI":"10.3390\/s23031270","type":"journal-article","created":{"date-parts":[[2023,1,23]],"date-time":"2023-01-23T01:36:26Z","timestamp":1674437786000},"page":"1270","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["An Electrochemical Sensor for Sulfadiazine Determination Based on a Copper Nanoparticles\/Molecularly Imprinted Overoxidized Polypyrrole Composite"],"prefix":"10.3390","volume":"23","author":[{"given":"Manahil Babiker","family":"Elamin","sequence":"first","affiliation":[{"name":"Department of Chemistry, Faculty of Science Al-Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shazalia Mahmoud Ahmed","family":"Ali","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Faculty of Science Al-Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Houda","family":"Essousi","sequence":"additional","affiliation":[{"name":"Laboratory of Interfaces and Advanced Materials, Faculty of Sciences, Monastir University, Monastir 5000, Tunisia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0939-9890","authenticated-orcid":false,"given":"Amani","family":"Chrouda","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Faculty of Science Al-Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laila M.","family":"Alhaidari","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Faculty of Science Al-Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1354-9273","authenticated-orcid":false,"given":"Nicole","family":"Jaffrezic-Renault","sequence":"additional","affiliation":[{"name":"Institute of Analytical Sciences, University of Lyon, UMR CNRS 5280, 69100 Villeurbanne, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7073-4566","authenticated-orcid":false,"given":"Houcine","family":"Barhoumi","sequence":"additional","affiliation":[{"name":"Laboratory of Interfaces and Advanced Materials, Faculty of Sciences, Monastir University, Monastir 5000, Tunisia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1008","DOI":"10.1016\/j.trac.2008.10.001","article-title":"Identification and determination of metabolites and degradation products of sulphonamide antibiotics","volume":"27","year":"2008","journal-title":"TrAC Trends Anal. 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