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Reference type: Journal
Authors: Zhao XY, Zuo JJ, Qiu S, Hu WS, Wang YF, Zhang JK
Article Title: Reduced Graphene Oxide-Modified Screen-Printed Carbon (rGO-SPCE)-Based Disposable Electrochemical Sensor for Sensitive and Selective Determination of Ethyl Carbamate.
Publication date: 2017
Journal: Food Analytical Methods
Volume: 10
Issue: (10)
Page numbers: 3329-3337.
DOI: 10.1007/s12161-017-0886-2

Abstract: Ethyl carbamate (EC), a multi-site genotoxic carcinogen, exists in fermented food and beverages. However, the existing analytical methods need precise instrument, complex sample pretreatment, time-consuming, and high cost. Therefore, a disposable electrochemical biomimetic sensor was developed for fast and selective detection of EC based on reduced graphene oxide/screen-printed carbon composite electrode (rGO/SPCE). Firstly, the SPCE is modified with rGO by electrodeposition process that increased current signal and decreased the impedance of contact interface. Secondly, the OAP/rGO/SPCE biomimetic sensor was synthesized through electropolymerization by cyclic voltammograms in mixed solution of template of EC and monomer of O-aminophenol (OAP). The sensor specifically bound to EC quickly without sample pretreatment. A linear range was from 100 to 1300 nM, and a detection limit of 37 nM was achieved. The detection time is less than 5 min. The sensor possesses advantages include good chemical and mechanical stability, simplicity, low cost of preparation, and sensitive and label-free determination
Template and target information: ethyl carbamate, EC
Author keywords: Reduced graphene oxide, Screen-printed carbon electrode, O-Aminophenol, Ethyl carbamate, molecular imprinting


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