Carbon black-chitosan film-based electrochemical sensor for losartan

Silva, Laís Pereira; Silva, Tiago; Moraes, Fernando C.; Fatibello‐Filho, Orlando

doi:10.1007/s10008-020-04541-1

Cited by 11 publications

(3 citation statements)

References 45 publications

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“…The sample preparation followed as described by Silva et . [46]. First, ten tablets of each sample were weighed to determine the average mass of one tablet.…”

Section: Methodsmentioning

confidence: 99%

A Novel Electrochemical Glassy Carbon Electrode Modified with Carbon Black and Glyceline Deep Eutectic Solvent within a Crosslinked Chitosan Film for Simultaneous Determination of Acetaminophen and Diclofenac

et al. 2021

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Glyceline, reline, or ethaline deep eutectic solvents and carbon black nanoparticles within a crosslinked chitosan film are investigated as glassy carbon electrode modifiers for the first time. The selected 5 mg mL−1 glyceline modified GCE was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, and scanning electron microscopy. Simultaneous determination of acetaminophen and diclofenac by differential pulse adsorptive stripping voltammetry (DPAdSV) presented limits of detection of 2.6×10−8 and 5.2×10−8 mol L−1 for acetaminophen and diclofenac, respectively, in pharmaceutical and biological samples. The obtained results were compared with those obtained by HPLC at a confidence level of 95 %.

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“…The sample preparation followed as described by Silva et . [46]. First, ten tablets of each sample were weighed to determine the average mass of one tablet.…”

Section: Methodsmentioning

confidence: 99%

A Novel Electrochemical Glassy Carbon Electrode Modified with Carbon Black and Glyceline Deep Eutectic Solvent within a Crosslinked Chitosan Film for Simultaneous Determination of Acetaminophen and Diclofenac

et al. 2021

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“…To combat this, carbon black (CB) nanoparticles have been proposed as electrode modifiers for cannabis seed oil, antihypertensive drugs, phenolic compounds, DNA, flavonoids, and metal analysis. Carbon black offers comparable results to other carbon nanostructured sensors [16][17][18][19][20][21][22][23] It is a commonly available carbon source with elemental carbon arranged in aggregates of fine particles from 3 -100 nm. The nanomaterial is often employed as thin film or electrode coating in conjunction with other nanoparticles and active materials.…”

Section: Introductionmentioning

confidence: 99%

Nickel contamination analysis at cost-effective silver printed paper-based electrodes based on carbon black dimethylglyoxime ink as electrode modifier

Pokpas

Jahed

Bezuidenhout

et al. 2022

J. Electrochem. Sci. Eng.

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Electrochemical detection of metal cations at paper-based sensors has been suggested as an attractive alternative to current spectroscopic and chromatographic detection techniques due to the ease of fabrication, disposable nature, and low cost. Herein, a novel carbon black (CB), dimethylglyoxime (DMG) ink is designed as an electrode modifier in conjunction with 3-electrode inkjet-printed paper substrates for use in the adsorptive stripping voltammetric electroanalysis of nickel cations in water samples. The developed method provides a novel, low-cost, rapid, and portable adsorptive stripping detection approach towards metal analysis in the absence of the commonly used toxic metallic films. The study demonstrated a novel approach to nickel detection at paper-based sensors and builds on previous work in the field of paper-based metal analysis by limiting the use of toxic metal films. The device sensitivity is improved by increasing the active surface area, electron transfer kinetics, and catalytic effects associated with non-conductive dimethylglyoxime films through CB nanoparticles for the first time and confirmed by electroanalysis. The first use of the CB-DMG ink allows for the selective preconcentration of analyte at the electrode surface without the use of toxic Mercury or Bismuth metallic films. Compared to similarly reported paper-based sensors, improved limits of detection (48 µg L-1), selectivity, and intermetallic interferences were achieved. The method was applied to the detection of nickel in water samples well below World Health Organization (WHO) standards.

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“…It is also characterized by the availability of a large number of amino and hydroxylbased functional groups that can excellently serve for the covalent immobilization of biosensing elements by introducing a proper choice of reagent, for instance, glutaraldehyde, allowing the covalent bond formation or affinity conjugation with other functional components 28 . Thus far, chitosan-based electrochemical immunosensors have been applied in various applications according to their obvious performance [29][30][31][32][33] . However, using the chitosan-supported electrochemical biosensor as a handle in point-of-care clinical trials remains a challenge.…”

mentioning

confidence: 99%

An innovative wireless electrochemical card sensor for field-deployable diagnostics of Hepatitis B surface antigen

Teengam

Tangkijvanich

Chuaypen

et al. 2023

Sci Rep

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A wireless-based detection utilizing an innovative electrochemical card (eCard) sensor controlled by a smartphone was developed for targeting Hepatitis B surface antigen (HBsAg). A simple label-free electrochemical platform allows a convenient operation for point-of-care diagnosis. A disposable screen-printed carbon electrode was modified straightforwardly layer-by-layer with chitosan followed by glutaraldehyde, allowing a simple but effective, reproducible, and stable method for covalently immobilizing antibodies. The modification and immobilization processes were verified by electrochemical impedance spectroscopy and cyclic voltammetry. The smartphone-based eCard sensor was used to quantify HBsAg by measuring the change in current response of the [Fe(CN)6]3-/4- redox couple before and after the presence of HBsAg. Under the optimal conditions, the linear calibration curve for HBsAg was found to be 10–100,000 IU/mL with a detection limit of 9.55 IU/mL. The HBsAg eCard sensor was successfully applied to detect 500 chronic HBV-infected serum samples with satisfactory results, demonstrating the excellent applicability of this system. The sensitivity and specificity of this sensing platform were found to be 97.75% and 93%, respectively. As illustrated, the proposed eCard immunosensor offered a rapid, sensitive, selective, and easy-to-use platform for healthcare providers to rapidly determine the infection status of HBV patients.

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Carbon black-chitosan film-based electrochemical sensor for losartan

Cited by 11 publications

References 45 publications

A Novel Electrochemical Glassy Carbon Electrode Modified with Carbon Black and Glyceline Deep Eutectic Solvent within a Crosslinked Chitosan Film for Simultaneous Determination of Acetaminophen and Diclofenac

A Novel Electrochemical Glassy Carbon Electrode Modified with Carbon Black and Glyceline Deep Eutectic Solvent within a Crosslinked Chitosan Film for Simultaneous Determination of Acetaminophen and Diclofenac

Nickel contamination analysis at cost-effective silver printed paper-based electrodes based on carbon black dimethylglyoxime ink as electrode modifier

An innovative wireless electrochemical card sensor for field-deployable diagnostics of Hepatitis B surface antigen

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