Development and application of tetrabromobisphenol A imprinted electrochemical sensor based on graphene/carbon nanotubes three-dimensional nanocomposites modified carbon electrode.

A novel imprinted electrochemical sensor based on graphene/carbon nanotubes three-dimensional (3D) nanocomposites modified carbon electrode was developed for the determination of tetrabromobisphenol A. The imprinted film was prepared by one-step electrodeposition technique with pyrrole as the functional monomer and tetrabromobisphenol A as the template molecule. The imprinted sensor was used for the determination of tetrabromobisphenol A with differential pulse voltammetry. A linear relationship between the response currents and the negative logarithm of tetrabromobisphenol A concentrations was obtained in the concentrations range of 1.0×10(-11)-1.0×10(-8) mol L(-1) with a detection limit of 3.7×10(-12) mol L(-1) (S/N=3). The proposed imprinted sensor showed excellent selectivity towards tetrabromobisphenol A. With good reproducibility and stability, the imprinted electrochemical sensor was used to detect tetrabromobisphenol A in fish samples successfully with the recoveries of 93.3-107.7%.

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