Electroanalysis of Bisphenol A at a Multiwalled Carbon Nanotubes‐gold Nanoparticles Modified Glassy Carbon Electrode |
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| Authors: | Xinman Tu Liushui Yan Xubiao Luo Shenglian Luo Qingji Xie |
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| Institution: | 1. School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, P.?R. China;2. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, Changsha 410081, P.?R. China |
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| Abstract: | A sensitive electrochemical method was developed for the determination of bisphenol A (BPA) at a glassy carbon electrode (GCE) modified with a multiwalled carbon nanotubes (MWCNTs)‐gold nanoparticles (GNPs) hybrid film, which was prepared based on the electrostatic interaction between positively charged cetyltrimethylammonium bromide (CTAB) and negatively charged MWCNTs and GNPs. The MWCNT‐GNPs/GCE exhibited an enhanced electroactivity for BPA oxidation versus unmodified GCE and MWCNTs/GCE. The experimental parameters, including the amounts of modified MWCNTs and GNPs, the pH of the supporting electrolyte, scan rate and accumulation time, were examined and optimized. Under the optimal conditions, the differential pulse voltammetric anodic peak current of BPA was linear with the BPA concentration from 2.0×10?8 to 2×10?5 mol L?1, with a limit of detection of 7.5 nmol L?1. The proposed procedure was applied to determine BPA leached from real plastic samples with satisfactory results. |
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| Keywords: | Bisphenol A Differential pulse voltammetric determination MWCNTs‐GNPs hybrid film Modified electrode Nanoparticles Voltammetry |
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