Electroanalytical Investigation and Simultaneous Determination of Etodolac and Thiocolchicoside at a Non‐modified Glassy Carbon Electrode in Anionic Surfactant Media

Selcuk, Ozge; Erkmen, Cem; Bozal‐Palabiyik, Burcin; Uslu, Bengi

doi:10.1002/elan.202060623

Cited by 8 publications

(2 citation statements)

References 31 publications

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“…SDS caused a change of about 50 mV, while the Triton X100 was found to have an effect of only 25 mV. A peak shift above around 100 mV can be useful in many overlap situations (Selcuk et al 2021). The use of excess surfactant to achieve good peak separation can become the limiting factor since it reduces the peak currents.…”

Section: Discussionmentioning

confidence: 99%

Electrochemical Behaviour of 5-Methyl-4-(2-Thiazolylazo)-Resorcinol in Micellar Media

Karaçelik¹,

Karaman

Topçu

2021

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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In this study, surfactant effects on the spectroscopic and electrochemical behavior of 5-Methyl-4-(2thiazolylazo)-resorcinol were studied in an aqueous solution at neutral pH. Dodecylpyridinium chloride (DDPC), cetylpyridinium chloride (CPC) (cationic), Triton X100, Tween 20 (nonionic), and sodium dodecyl sulfate (SDS) (anionic), were used in investigation. A large bathochromic shift of absorption maxima of the dye was observed upon the addition of surfactant. Electrochemical reduction of the dye was investigated by cyclic voltammetry (CV). The adsorption-controlled reduction reaction of the dye changed to a semireversible diffusion-controlled reduction peak at -0.43 V by the addition of CPC. Depending on the CPC concentration in the dye solution, the peak potential of the electrode reaction shifted about 120 mV in the cathodic direction and the peak current decreased up to ten times. These changes were interpreted depending on the type and concentration of surfactant present in the solution.

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Section: Discussionmentioning

confidence: 99%

Electrochemical Behaviour of 5-Methyl-4-(2-Thiazolylazo)-Resorcinol in Micellar Media

Karaçelik¹,

Karaman

Topçu

2021

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…Good recovery results were obtained at NC/ CPE as shown in Table S3 (see supplementary file). The tablets containing FA were bought from a pharmacy and directly analyzed by CV technique followed by the sample preparation procedure as recently explained in the literature (Hanabaratti et al 2020;Selcuk et al 2021). The tablets were weighed and crushed into a fine powder using a mortar and pestle, and an adequate quantity of this sample was dissolved with double-distilled water and sonicated for 30 min to ensure complete dissolution.…”

Section: Analytical Application Of Nc/cpe In Real Samples and Pharmaceuticalsmentioning

confidence: 99%

Electrochemical investigations and theoretical studies of biocompatible niacin-modified carbon paste electrode interface for electrochemical sensing of folic acid

et al. 2021

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The modified electrode–analyte interaction is critical in establishing the sensing mechanism and in developing an electrochemical sensor. Here, the niacin-modified carbon paste electrode (NC/CPE) was fabricated for electrochemical sensing applications. The two stable structures of the niacin were optimized and confirmed by the absence of negative vibrational frequency, at B3LYP and B3LYP-GD3BJ level and 6–311 g** basis set. The physical and quantum chemical quantities were used to explain the molecular stability and electronic structure-related properties of the niacin. The natural bond orbital (NBO) analysis was performed to disclose the donor–acceptor interactions that were a critical role in explaining the modifier–analyte interaction. The fabricated NC/CPE was used for the determination of folic acid (FA) in physiological pH by cyclic voltammetry (CV) method. The limit of detection (LOD) for FA at NC/CPE was calculated to be 0.09 µM in the linear concentration range of 5.0 µM to 45.0 µM (0.2 M PBS, pH 7.4) by CV technique. The analytical applicability of the NC/CPE was evaluated in real samples, such as fruit juice and pharmaceutical sample, and the obtained results were acceptable. The HOMO and LUMO densities are used to identify the nucleophilic and electrophilic regions of niacin. The use of density functional theory-based quantum chemical simulations to understand the sensory performance of the modifier has laid a new foundation for fabricating electrochemical sensing platforms.

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Graphene Quantum Dot‐poly(L‐lysine)‐gold Nanoparticles Nanocomposite for Electrochemical Determination of Dopamine and Serotonin

Şimşek

Tığ

2021

Electroanalysis

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A nanocomposite consists of AuNPs, GQD, and poly(L‐lysine) was prepared for highly sensitive electrochemical determination of dopamine (DA) and serotonin (5‐HT) neurotransmitters which are of vital importance in neurological disorders. The P(L‐Lys) GQD was successfully obtained a one‐step co‐electrodeposition of GQD and L‐Lys on the PGE. The electrochemical behaviors of DA and 5‐HT were analyzed via DPV and CV. LOD values for DA and 5‐HT were calculated as 0.03 μM and 0.017 μM, respectively. Also, the DA and 5‐HT contents were determined at the PGE/AuNPs/P(L‐Lys)‐GQD in fetal bovine serum samples and pharmaceutical formulations, and high recovery values were obtained.

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Electroanalytical Investigation and Simultaneous Determination of Etodolac and Thiocolchicoside at a Non‐modified Glassy Carbon Electrode in Anionic Surfactant Media

Cited by 8 publications

References 31 publications

Electrochemical Behaviour of 5-Methyl-4-(2-Thiazolylazo)-Resorcinol in Micellar Media

Electrochemical Behaviour of 5-Methyl-4-(2-Thiazolylazo)-Resorcinol in Micellar Media

Electrochemical investigations and theoretical studies of biocompatible niacin-modified carbon paste electrode interface for electrochemical sensing of folic acid

Graphene Quantum Dot‐poly(L‐lysine)‐gold Nanoparticles Nanocomposite for Electrochemical Determination of Dopamine and Serotonin

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