Electrochemical, theoretical and analytical studies of the electro-oxidation of sulfamerazine and norfloxacin on a glassy carbon electrode

Canales, Camila; Ramos, Danilo; Fierro, Angélica; Antilén, Mónica

doi:10.1016/j.electacta.2019.06.035

Cited by 23 publications

(3 citation statements)

References 22 publications

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“…The slope value of 0.417 is close to the theoretical value (0.50) of the electrochemical diffusion control process. [ 44 ] On the other hand, it can be seen that the E pa is linearly proportional to ln v within the scan rate range (Figure 4F). The linear regression equation can be given as E pa (V) = 0.0707 log v (mV s −1 ) + 0.705 and the regression coefficient R 2 = 0.997.…”

Section: Resultsmentioning

confidence: 94%

Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine

Qian

Zhang

et al. 2023

Advanced Sensor Research

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In this study, metal-organic framework (MOF) nanoparticles of UiO-66 are integrated with expanded graphite (EG) (UiO-66/EG) by a facile solvothermal approach. The advantages of this nanocomposite UiO-66/EG overcome the poor electronic conductivity and slow diffusion of MOFs for their electrochemical applications. Through electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and electrochemical techniques, the morphology, surface area, and physicochemical properties of this UiO-66/EG nanocomposite are characterized. The UiO-66/EG nanocomposite exhibits superior sensing performance over the UiO-66 and EG when used for nitrite and L-cysteine determination. This includes less positive oxidation potentials and enhanced oxidation currents. Using the UiO-66/EG nanocomposite, the nitrite oxidation peak current is linear with a concentration range of 0.20 𝝁m to 13.15 mm with the lowest limit of detection (LOD) of 0.06 𝝁m (S/N = 3). Meanwhile, superior performance is demonstrated for L-cysteine monitoring, where the oxidation peak current is linear over the L-cysteine concentration in the range of 0.5-250 𝝁m and of 0.25-3.50 mm and a LOD of 0.28 𝝁m (S/N = 3). This UiO-66/EG/GCE nanocomposite is successfully exploited to detect nitrite in food samples and to measure L-cysteine in juice samples. Therefore, the proposed sensing platform enables the fabrication of high-performance electrochemical sensors to accurately quantify nitrite and L-cysteine in complex matrixes.

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Section: Resultsmentioning

confidence: 94%

Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine

Qian

Zhang

et al. 2023

Advanced Sensor Research

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“…The reduction signals measured with the DPV technique were consistent with the values of cathodic peak potential determined from CV (Table 5). Regarding the electrochemical characteristics of ligands in an aqueous medium, SMZ underwent electro-oxidation at a potential of approximately 0.9 V and the signal was dependent on the pH of the solution [63]. By contrast, STZ showed very low electrochemical activity, which was also registered in water and Tris buffer (pH 7.4) with the addition of 5% DMSO (Figure S20).…”

Section: Electrochemical Profilementioning

confidence: 99%

Stimulation of Sulfonamides Antibacterial Drugs Activity as a Result of Complexation with Ru(III): Physicochemical and Biological Study

Spisz

Chylewska

Królicka

et al. 2021

IJMS

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Antibiotic resistance is a global problem, and one promising solution to overcome this issue is using metallodrugs, which are drugs containing metal ions and ligands. These complexes are superior to free ligands in various characteristics including anticancer properties and mechanism of action. The pharmacological potential of metallodrugs can be modulated by the appropriate selection of ligands and metal ions. A good example of proper coordination is the combination of sulfonamides (sulfamerazine, sulfathiazole) with a ruthenium(III) ion. This work aimed to confirm that the activity of sulfonamides antibacterial drugs is initiated and/or stimulated by their coordination to an Ru(III) ion. The study determined the structure, electrochemical profile, CT-DNA affinity, and antimicrobial as well as anticancer properties of the synthesized complexes. The results proved that Ru(III) complexes exhibited better biological properties than the free ligands.

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“…[15] For this reason, NFX analyzes have attracted great attention for monitoring its quality control processes and for the determination the pollution level that occurs after drug use. Up to now, there have been numerous methods reported in the literature such as high performance liquid chromatography, [16][17][18][19][20][21] capillary electrophoresis, [22,23] UV spectrophotometry, [14,[24][25][26] luminescence spectrometry, [4,27,28] fluorescence spectrometry, [29,30] spectrofluorimetry, [11,15,31] electrochemical methods, [10,[32][33][34][35][36][37][38][39][40][41][42] and others. [5,43] Some of these methods are based on the degradation of the environmental contaminant that occurs after its use, [44][45][46] while some are directly focused to the monitoring of the relevant pollutant from environmental samples.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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In this article, a simple, fast and inexpensive methodology has been developed for the determination of fluoroquinolone class antibiotic norfloxacin (NFX) in anionic surfactant media (sodium dodecyl sulphate, SDS) using an anodically pretreated borondoped diamond (APT-BDD) electrode. Cyclic voltammetric studies showed that the NFX gave an irreversible and adsorption controlled anodic oxidation signal at a potential of about + 1.32 V on the APT-BDD electrode. The effects of parameters such as the electrode pre-treatment procedure, SDS concentration, and instrumental variables on the electrochemical sensitivity of NFX were evaluated. Under optimized conditions, the linearity was achieved in the range of 0.05 to 4.0 μg mL À 1 (1.57 × 10 À 7 À 1.25 × 10 À 5 mol L À 1), with a detection limit of 0.013 μg mL À 1 (4.07 × 10 À 8 mol L À 1) by using squarewave adsorptive stripping voltammetry (SW-AdSV). The feasibility of the developed approach for the quantification of NFX in urine samples was tested.

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Electrochemical, theoretical and analytical studies of the electro-oxidation of sulfamerazine and norfloxacin on a glassy carbon electrode

Cited by 23 publications

References 22 publications

Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine

Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine

Stimulation of Sulfonamides Antibacterial Drugs Activity as a Result of Complexation with Ru(III): Physicochemical and Biological Study

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

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