Interrupted amperometry: the new possibilities in electrochemical measurements

Семенова, Е. А.; Navolotskaya, D. V.; Ermakov, Sergey

doi:10.1515/pac-2017-0302

Cited by 7 publications

(3 citation statements)

References 42 publications

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“…This fundamental approach involves the inclusion of capacitive current along with the faradaic current in the signal called as "interrupted amperometry". 54 Various important parameters of the biosensor, such as sensitivity, limit of detection (LOD) and limit of quantification (LOQ) are calculated using the formulas as shown below (Eqs. 6-8):…”

Section: Pa Pcmentioning

confidence: 99%

Review—Electrochemical Sensing of Uric Acid: Methods and Recent Materials

Dhinasekaran,

John,

Subashchandran

2024

J. Electrochem. Soc.

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Uric acid (UA) is an important biomarker in blood to diagnosis diseases linked with hyperuricemia. Although several detection methods exist for UA sensing, electrochemical method has emerged as a promising alternative. For effective performance of a biosensor, the choice of electroactive material plays a crucial role. The developed electrodes are enzymatic and non-enzymatic with modified nano-structures of metal oxides, ferrites and carbon-based materials. Several combinations of nanocomposites using metal oxides with carbon-based compounds show promising results for biosensor applications. This is attributed to its functional groups, higher surface area and porous nature that can improve the sensing performance as it requires only quick-time processing with inexpensive and direct detection methods. The electrochemical method uses anodic peak current which is the analytical signal to sense the electrochemical oxidation of UA. This technique paves a new way to make electrodes for point-of-detection devices in near future. It could be the next generation of non-invasive analysis for food hygiene as well as biomedical and clinical applications. This review focuses on materials used in electrochemical sensing of UA and discusses on the application of different electrochemical techniques in UA detection.

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Section: Pa Pcmentioning

confidence: 99%

Review—Electrochemical Sensing of Uric Acid: Methods and Recent Materials

Dhinasekaran,

John,

Subashchandran

2024

J. Electrochem. Soc.

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“…The detection principle of electrochemical sensor is based on the measured substance in the process of electrochemical sensor surface reaction, using the recognition element induction in electrochemical sensor surface and substrate combined to produce a certain biological or chemical quantity; then, through the signal converter, according to a certain rule, a quantitative electrical signal (such as current, potential difference, or conductance properties) can be programmed so as to achieve the purpose of analysis and monitoring. The change and the concentration of the substance to be analyzed are proportional to the quantitative analysis of the analyte [123,[140][141][142][143][144]. Compared with traditional methods, the electrochemical sensor has many advantages, such as high sensitivity, a short response time, simple operation, the ability to monitor online in complex systems, and the ability to remove other analytes without the need for pretreatment, making it a unique analytical method for environmental pollution detection [145,146].…”

Section: Electrochemical Sensormentioning

confidence: 99%

Electrospun Nanofibers as Chemosensors for Detecting Environmental Pollutants: A Review

2023

Chemosensors

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Electrospun nanofibers have shown their advantages for applications in a wide variety of scientific fields thanks to their unique properties. Meanwhile, electrospinning is closely following the fast development of nano science and nanotechnology to move forward to smaller (pico-technology), more complicated nanostructures/nanodevices and more order (all kinds of nano arrays). Particularly, multiple-fluid electrospinning has the strong capability of creating nanostructures from a structural spinneret in a single-step and a straightforward “top-down” manner, holding great promise for creation on a large scale. This review is just to conclude the state-of-art studies on the related topics and also point out that the future directions of environmental detection require chemosensors, while the improvement of sensors requires new chemically synthesized functional substances, new nanostructured materials, application convenience, and functional integration or synergy. Based on the developments of electrospinning, more and more possibilities can be drawn out for detecting environmental pollutants with electrospun nanostructures as the strong support platform.

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“…Amperometry is based on the Cottrell equation and defines the measurement of the current at a controlled applied potential as a function of time. Signal is related to the diffusion-controlled Faraday current generated by the charge transfer reaction of the analyte ( Semenova et al, 2017 ; Wu et al, 2018 ; Pingarrón et al, 2020 ). Electrochemical impedance spectroscopy (EIS) is a useful tool for measuring the preparation and research of biosensor conductive materials, which provides changes in electrode surface phenomena and mass transfer resistance during electrochemical processes ( Li et al, 2019 ; Abraham et al, 2020 ).…”

Section: Background Knowledge For Glucose Sensorsmentioning

confidence: 99%

Electrospun nanofiber-based glucose sensors for glucose detection

Zhang

Liu

et al. 2022

Front. Chem.

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Diabetes is a chronic, systemic metabolic disease that leads to multiple complications, even death. Meanwhile, the number of people with diabetes worldwide is increasing year by year. Sensors play an important role in the development of biomedical devices. The development of efficient, stable, and inexpensive glucose sensors for the continuous monitoring of blood glucose levels has received widespread attention because they can provide reliable data for diabetes prevention and diagnosis. Electrospun nanofibers are new kinds of functional nanocomposites that show incredible capabilities for high-level biosensing. This article reviews glucose sensors based on electrospun nanofibers. The principles of the glucose sensor, the types of glucose measurement, and the glucose detection methods are briefly discussed. The principle of electrospinning and its applications and advantages in glucose sensors are then introduced. This article provides a comprehensive summary of the applications and advantages of polymers and nanomaterials in electrospun nanofiber-based glucose sensors. The relevant applications and comparisons of enzymatic and non-enzymatic nanofiber-based glucose sensors are discussed in detail. The main advantages and disadvantages of glucose sensors based on electrospun nanofibers are evaluated, and some solutions are proposed. Finally, potential commercial development and improved methods for glucose sensors based on electrospinning nanofibers are discussed.

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Interrupted amperometry: the new possibilities in electrochemical measurements

Cited by 7 publications

References 42 publications

Review—Electrochemical Sensing of Uric Acid: Methods and Recent Materials

Review—Electrochemical Sensing of Uric Acid: Methods and Recent Materials

Electrospun Nanofibers as Chemosensors for Detecting Environmental Pollutants: A Review

Electrospun nanofiber-based glucose sensors for glucose detection

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