A novel amperometric phenol biosensor based on immobilized HRP on poly(glycidylmethacrylate)-grafted iron oxide nanoparticles for the determination of phenol derivatives

作者: Emre Çevik , Mehmet Şenel , Abdulhadi Baykal , M. Fatih Abasıyanık

DOI: 10.1016/J.SNB.2012.07.026

关键词:

摘要: Abstract A new type of amperometric phenol biosensor was fabricated for the determination and its derivatives such as, phenol, catechol, p -cresol, 2-aminophenol pyrogallol. The telomere poly(glycidylmethacrylate) (PGMA) with a trimethoxysilyl terminal group synthesized by telomerization glycidylmethacrylate. Iron oxide nanoparticles were coated in order to obtain good enzyme immobilization platform. PGMA covered Fe 3 O 4 covalently attached Au electrode surface horseradish peroxidase (HRP) immobilized on surface, respectively. telomere, modified electrodes characterized Fourier transform infrared (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM) cyclic voltammetry (CV) before after HRP. Amperometric response measured as function substrate concentration, at fixed potential −0.50 V vs. Ag/AgCl phosphate-buffered saline (pH 7.5). Analytical parameters obtained from calibration curves. basic features (optimum pH, optimum temperature, reusability, storage stability) determined.

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