Enrofloxacin behavior in presence of soil extracted organic matter: An electrochemical approach

Electrochemical Determination of Fluoroquinolone Antibiotic Norfloxacin in the Presence of Anionic Surfactant Using the Anodically Pretreated Boron‐Doped Diamond Electrode

“…This result shows that NFX oxidation is affected by protonation. This behavior of NFX on the APT‐BDD electrode is in agreement with the electrochemical behaviors of fluoroquinolones on different electrodes [7,40,41,57] . On the other hand, the oxidation peak currents of NFX increased from pH 2.0 to 6.0 but decreased at subsequent pH values.…”

“…This behavior of NFX on the APT-BDD electrode is in agreement with the electrochemical behaviors of fluoroquinolones on different electrodes. [7,40,41,57] On the other hand, the oxidation peak currents of NFX increased from pH 2.0 to 6.0 but decreased at subsequent pH values. The height of the oxidation peak currents of NFX and the location of the peak potentials were evaluated in different supporting electrolytes such as ABS pH 4.7, HClO 4 , PBS pH 2.5 and PBS pH 7.4, and 6.16 (+ 1.30 V), 4.11 (+ 1.33 V), 4.55 (+ 1.33 V) and 2.63 (+ 1.19 V) μA values were obtained, respectively.…”

Electrochemical Sensor Based on a Composite of Reduced Graphene Oxide and Molecularly Imprinted Copolymer of Polyaniline–Poly(o-phenylenediamine) for Ciprofloxacin Determination: Fabrication, Characterization, and Performance Evaluation

“…The post-elution MIP/rGO/GCE (Figure E) produced the highest I p of 77.77 μA, which is attributed to an additional surface area from wrinkles and a sheet-like copolymer of the MIP. We determined the electroactive area of the electrode following the Randles–Sevcĭk equation (eq ): , I normalp = ( 2.69 × 10 5 ) A D 1 / 2 n 3 / 2 v 1 / 2 C where I p denotes the anodic peak current (A), A denotes the electroactive area (cm 2 ), D denotes the diffusion coefficient (4.0 × 10 –6 cm 2 s –1 ), n denotes the number of electrons participating in the redox reaction ( n = 1), v denotes the scan rate (V s –1 ), and C denotes the concentration of the probe molecule (5.0 × 10 –3 mol L –1 [Fe(CN) 6 ] 3–/4– ). The electroactive areas of bare GCE, rGO/GCE, post-elution rGO/GCE, post-elution NIP/rGO/GCE, and post-elution MIP/rGO/GCE were 0.07, 0.09, 0.09, 0.10, and 0.14 cm 2 , respectively.…”

A highly sensitive impedimetric sensor based on a MIP biomimetic for the detection of enrofloxacin

“…The well-defined oxidation peak was observed at around +200 mV vs. Ag/AgCl and can be attributed to the polymerization of p -ATP monomers. 32–34…”

“…The well-dened oxidation peak was observed at around +200 mV vs. Ag/AgCl and can be attributed to the polymerization of p-ATP monomers. [32][33][34] Furthermore, we evaluated the electrochemical properties of the electrode aer each fabrication process. The results indicated that the conductivity of the electrode changed due to the intrinsic conductivity properties of substances covered on the electrode surface.…”