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Both ion-imprinted (IIP) and nonimprinted (NIP) electrochemical sensor surfaces were evaluated using UV-Visible spectrometry and scanning electron microscopy (SEM). The electrochemical analysis was made via cyclic voltammetry (CV), linear sweep voltammetry (LSV), and impedance spectroscopy (IS). Throughout this study various analytical parameters, such as scan rate, pH value, concentration of monomer and template, and electropolymerization cycles, were optimized. Under the optimum conditions, the peaks current of nitrate was linear to its concentration in the range of 1<jats:italic>\u03bc<\/jats:italic>M-0.1M with a detection limit of 31<jats:italic>\u03bc<\/jats:italic>M and 5<jats:italic>\u03bc<\/jats:italic>M by EIS and LSV. The developed imprinted nitrate sensor was successfully applied for nitrate determination in different real water samples with acceptable recovery rates.<\/jats:p>","DOI":"10.1155\/2019\/4257125","type":"journal-article","created":{"date-parts":[[2019,5,15]],"date-time":"2019-05-15T19:31:14Z","timestamp":1557948674000},"page":"1-14","source":"Crossref","is-referenced-by-count":78,"title":["Ion-Imprinted Electrochemical Sensor Based on Copper Nanoparticles-Polyaniline Matrix for Nitrate Detection"],"prefix":"10.1155","volume":"2019","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2557-9736","authenticated-orcid":true,"given":"Houda","family":"Essousi","sequence":"first","affiliation":[{"name":"Laboratory of Interfaces and Advanced Materials, University of Monastir, Faculty of Sciences of Monastir, 5000 Monastir, 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