A simple hydroxylated multi-walled carbon nanotubes modified glassy carbon electrode for rapid amperometric detection of bisphenol A

SENSORS AND ACTUATORS B-CHEMICAL

卷:246

Article

Cosio, Maria Stella¹  Pellicano, Alessandro¹  Brunetti, Barbara¹  Alberto Fuenmayor, Carlos² 

[1] Univ Milan, Dept Food Environm & Nutr Sci DEFENS, Via Celoria 2, I-20133 Milan, Italy

[2] Univ Atlantico, Fac Nutr & Dietet, Km 7 Antigua Via Puerto Colombia, Barranquilla, Colombia

关键词: Bisphenol A;    Glassy carbon electrode;    Multi-walled carbon nanotubes;    Amperometry;    Flow injection analysis;   

DOI  :  10.1016/j.snb.2017.02.104

来源: Elsevier

【 摘 要 】

A novel amperometric sensor for the determination of bisphenol A (BPA) was fabricated using a glassy carbon electrode easily modified with multi-walled carbon nanotubes functionalized with hydroxyl groups. The catalytic activity of the modifier toward the oxidation of BPA was demonstrated by cyclic voltammetry, giving a well-defined peak at 0.55 V in sodium glycine buffer solution (pH 8.0). The flow injection analysis (FIA) system of BPA exhibited a linear response in the 1-24 mu g L-1 concentration range, with a detection limit of 0.81 mu g L-1. The current reached the steady-state value with a very fast response time (less than 10 s). The proposed method was successfully applied for the determination of BPA in real samples (water contained in plastic and baby bottles) with satisfactory results, in optimum agreement with those obtained by an independent HPLC method. In the light of our results and previous reports, the proposed system combines good analytical performance with simplicity of sensor fabrication, being ideal for routine sensing applications. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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