Analysis of sulfamethoxazole by square wave voltammetry using new carbon paste electrode

Eleotério, Izabel Cristina; Balbino, Marco Aantonio; Andrade, José Fernando de; Saczk, Adelir Aparecida; Okumura, Leonardo Luiz; Batista, Alexandre; Oliveira, Marcelo Firmino de

doi:10.5599/jese.583

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…53 A similar result was obtained for sulfamethoxazole oxidation using the carbon paste electrode. 54 The reduction of overpotential was also obtained for piroxicam i.e., 0.63 V to 0.56 V with a multiwall carbon nanotube (MWCNT) modified carbon paste electrode in comparison to the bare carbon paste electrode. 55 This is due to the enhanced electrocatalysis of the piroxicam oxidation process in presence of the MWCNT modifier.…”

Section: Resultsmentioning

confidence: 88%

Facile Synthesized Novel Nanocomposites Modified Electrodes in the Trace Detection of Sulfamethoxazole

Lalmalsawmi

Tiwari

2021

J. Electrochem. Soc.

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Micro-pollutants, especially antibiotics contamination in water bodies, are a serious concern, and their detection at a low level is important for human health and even aquatic life at large. The present investigation aims to obtain the novel nanocomposite material precursor to clay and silane. The nanocomposite material is decorated with Ag or Au nanoparticles as obtained indigenously by a green route using natural phytochemicals. The materials were extensively characterized by advanced analytical methods. The nanocomposite materials (Ag(NP)/TCBN and Au(NP)/TCBN) are employed in the selective and efficient trace measurement of sulfamethoxazole (SMZ) in aqueous solutions using the differential pulse anodic stripping voltammetry. The cyclic voltammetric and electrochemical impedance spectroscopic methods showed an increased electroactive surface area as well as faster electron transfer reactions compared to the glassy carbon electrode (GCE). The DPASV measurements at the concentration range of 0.25 mg l−1 to 30.0 mg/l showed that the novel nanocomposites provide the LOD of 0.022 and 0.036 mg l−1, respectively, for the Ag(NP)/TCBN/GCE and Au(NP)/TCBN/GCE for sulfamethoxazole. Further, the application of the method for the detection of sulfamethoxazole in real water samples resulted in an acceptable recovery percentage of 93.08 to 103.7.

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Section: Resultsmentioning

confidence: 88%

Facile Synthesized Novel Nanocomposites Modified Electrodes in the Trace Detection of Sulfamethoxazole

Lalmalsawmi

Tiwari

2021

J. Electrochem. Soc.

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“…Electrochemical methods have some attractive advantages such as simple and fast response, low maintenance cost, excellent selectivity and high sensitivity. However, a serious obstacle is that the oxidation peak potentials of the isomers are too close at a bare electrode which causes overlapping of voltammetric responses, making their discrimination very difficult [13][14][15][16][17]. A chemically modified electrode is a superior approach to solve the peak separation problem by applying a modifier [18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of LaMnO3 nanocrystals and graphene oxide: fabrication of graphene oxide–LaMnO3 sensor for simultaneous electrochemical determination of hydroquinone and catechol

Akbari

Foroughi

Nadiki

et al. 2019

J. Electrochem. Sci. Eng.

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For the first time, a new method for preparation of graphene oxide-LaMnO3 (GO-LaMnO3) nanocompositeas a material of electrochemical sensor for simultaneous determination of catechol (CT) and hydroquinone (HQ) is developed. LaMnO3 nanoparticles have been characterized by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-ray analysis (EDX) technique. Due to the excellent catalytic activity, enhanced electrical conductivity and high surface area, the simultaneous determination of HQ and CT with two well-defined peaks has been achieved at the GO-LaMnO3 modified electrode. Comparing with unmodified electrodes, the oxidation currents of HQ and CT increased remarkably. Also, the result exhibited a great decrease in anodic overpotentialresulting in about 150 mV negative shift of potential. The catalytic peak current values are found linearly dependent on the HQ and CT concentrations in the range of 0.5–433.3 and 0.5–460.0 μM with sensitivity of 0.0719 and 0.0712 μA μM-1, respectively. The detection limits for HQ and CT are determined as 0.06 and 0.05 μM, respectively.

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Determination of Solubility of 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic Acid and its Sodium Salt in Acetonitrile and Voltammetric Investigation of Sulphonamide Drugs in Different Solvents in Their Absence and Presence

et al. 2021

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Sulphonamide drugs (sulphamethazine, sulphamerazine, sulphadiazine, sulphathiazole) were studied in a wide potential window (between 2 and − 2 V) in acetonitrile, dimethyl sulphoxide and in 50–50 v/v% binary mixtures of acetonitrile and water. The voltammograms of the outlined compounds were very similar both in the anodic and cathodic part in each non-aqueous solvents except for sulphathiazole. These sulphonamide drugs were also investigated in presence of 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) and its sodium salt and the voltammograms changed due to an acid–base reaction. HEPES and its sodium salt could be investigated in acetonitrile only in their saturation concentration as they were slightly soluble in this solvent. In a separate experiment their solubilities were determined at 298 K in acetonitrile with the co-solvent calibration method using water as co-solvent. Complementary fluorescence studies in dimethyl sulphoxide did not show the presence of any interaction between sulphonamide drugs and HEPES as well as its sodium salt.

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Analysis of sulfamethoxazole by square wave voltammetry using new carbon paste electrode

Cited by 8 publications

References 32 publications

Facile Synthesized Novel Nanocomposites Modified Electrodes in the Trace Detection of Sulfamethoxazole

Facile Synthesized Novel Nanocomposites Modified Electrodes in the Trace Detection of Sulfamethoxazole

Synthesis and characterization of LaMnO3 nanocrystals and graphene oxide: fabrication of graphene oxide–LaMnO3 sensor for simultaneous electrochemical determination of hydroquinone and catechol

Determination of Solubility of 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic Acid and its Sodium Salt in Acetonitrile and Voltammetric Investigation of Sulphonamide Drugs in Different Solvents in Their Absence and Presence

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