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In this work, an electrochemical sensor was developed by electrodes modification using poly (chitosan) to sensitive detection of RF in commercial multivitamin. Electrodeposition of chitosan on the surface of glass carbon electrode was performed using cyclic voltammetry technique in the range of \u22121 to +1 V. The modified electrode surface morphology was characterized using a high\u2010resolution field emission scanning electron microscope. The modified electrode was used as an effective electrical interface for the detection of RF using cyclic, differential pulse, and square wave voltammetry techniques. Finally, the sensor was applied to determine RF in commercial multivitamins. In optimum conditions, the linear range for the standard sample of RF and commercial multivitamins 94 to 333\u03bcM and 24.6 to 176\u03bcM were obtained, respectively. Low limit of quantification (LLOQ) were obtained as 24.6\u03bcM.<\/jats:p>","DOI":"10.1002\/jmr.2817","type":"journal-article","created":{"date-parts":[[2019,11,26]],"date-time":"2019-11-26T09:56:55Z","timestamp":1574762215000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Sensitive monitoring of riboflavin in commercial multivitamins using poly (chitosan)\u2010based nanocomposite"],"prefix":"10.1002","volume":"33","author":[{"given":"Soodabeh","family":"Hassanpour","sequence":"first","affiliation":[{"name":"Pharmaceutical Analysis Research Center Tabriz University of Medical Sciences  Tabriz Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arezoo","family":"Saadati","sequence":"additional","affiliation":[{"name":"Pharmaceutical Analysis Research Center Tabriz University of Medical Sciences  Tabriz 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