Recent developments in electrochemical sensor application and technology—a review

Guth, U.; Vonau, Winfried; Zösel, J.

doi:10.1088/0957-0233/20/4/042002

Cited by 217 publications

(127 citation statements)

References 85 publications

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“…such as highly sensitive and selective detection, goes up to femto level detection, quick analysis, easy to handle, reduces manual errors, suitable for field analysis and can be automated. 2 The electrochemical sensors have already been used to detect biological molecules, 3 volatile gases (hazardous to humans and environment), 4 analyzing the thermal condition 5 and contamination in food samples. 6 Another use for electrochemical sensors is to detect molecules produced in the human body.…”

mentioning

confidence: 99%

Electrochemically Exfoliated Carbon Quantum Dots Modified Electrodes for Detection of Dopamine Neurotransmitter

Devi

Kumar

Sundramoorthy

2018

J. Electrochem. Soc.

113

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A simple electroanalytical method was developed to detect dopamine (DA) neurotransmitter by using carbon quantum dots (CQDs) modified electrode. To synthesis CQDs, a green electrochemical method was adopted and graphite rods were used as anode and cathodes in 0.1 M NaOH/ethanol (EtOH) as the electrolyte solution. As-synthesized CQD showed different particle sizes depending on the applied current with time as characterized by UV-visible spectroscopy. The particle size, lattice structure and functional groups of CQDs were analyzed by the HR-TEM, XRD and FT-IR, respectively. The CQD exhibited a green fluorescence under UV light (365 nm). Moreover, CQD dispersion was used to modify glassy carbon electrode (GCE) and screen-printed carbon electrode (SPCE) to study their electrochemical and electrocatalytic properties. The both GCE/CQD and SPCE/CQD showed higher electrocatalytic activity toward oxidation of dopamine (DA) in phosphate buffered saline (PBS) solution (pH = 7.4). In order to avoid interferences, Nafion (Nf) layer was coated on the CQD film modified electrode. The effect of scan rate on DA oxidation was studied from 10 to 150 mV/s. The calibration curve was recorded for DA from 1 to 7 μM using a SPCE/CQD and the limit of detection was found to be 0.099 μM. The observed electro-catalytic activity of the CQD was attributed to their negatively charged functional groups which attracted positively charged DA in 0.1 M PBS. In addition, detection of DA in spiked human urine sample was demonstrated with satisfactory recovery analysis.

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mentioning

confidence: 99%

Electrochemically Exfoliated Carbon Quantum Dots Modified Electrodes for Detection of Dopamine Neurotransmitter

Devi

Kumar

Sundramoorthy

2018

J. Electrochem. Soc.

113

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“…Therefore, it is important to monitor the impact of chloride on the environmental conditions and detect any fluctuation caused by this pollutant. To detect the contamination of natural water sources and soil a network of early warning systems consisting of in-situ miniaturised electrochemical sensors are required as a simple alternative to the current methods of detection of pollution [1]. This approach enables the localization of pollution sources and better control of the environment but requires larger numbers of miniaturised, rugged and biodegradable devices suitable for field deployment [2,3].…”

Section: Introductionmentioning

confidence: 99%

A Textile Based Polypyrrole Chloride Sensor for Agricultural Use

Glanc-Gostkiewicz

Harris

2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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This paper describes the feasibility of developing a novel polypyrrole (PPy) potentiometric sensor. Conductive PPy-based polymers has been grown through a textile scaffold to create a flexible and robust sensing structure that can survive environments such as soil, with the choice of the scaffold materials offering control of the environmental impact. Further work has demonstrated that doped PPy has an electrochemical response that is sensitive to different measurands' concentration and in this case, we look at chloride response. Various chloride sensors were evaluated in varying concentrations of the potassium chloride test solutions in terms of their chloride ion sensitivity, hydration times and usable lifetime. The best performing sensor has shown a near-Nernstian response between 45-48 mV/decade to chloride ions and at least 2 weeks initial lifetime.

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“…In present organic acids, tartaric acid belongs to important organic biomolecules which is widely used in the fields of food, pharmacology and chemistry industry (Kvaratskhelia and Kvaratskhelia, 2008;Guth et al, 2009]. Therefore, it is of great significance to develop convenient, rapid and facile method to the determination of tartaric acid for food, chemistry industry, pharmaceutical quality and safety.…”

Section: Introductionmentioning

confidence: 99%

The electrochemical detection of tartaric acid using Cu vanadate nanorods modified electrode

Pei¹,

Wei²,

Lin³

et al. 2015

IJNBM

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Cu vanadate nanorods have been used as the glassy carbon electrode (GCE) modified materials for the electrochemical detection of tartaric acid. The effects of scan rate, tartaric acid concentration and electrolytes in the electrochemical behaviours of tartaric acid in KCl solution have been analysed. Two pairs of semi-reversible cyclic voltammogram (CV) peaks are observed. The CV peaks are located at +0.12 V, -0.04 V (cvp1, cvp2) and -0.07 V, -0.41 V (cvp1′, cvp2′), respectively. The intensity of the electrochemical CV peaks increases linearly with the increase of the scan rate from 25 to 200 mVs -1 , tartaric acid concentration from 0.01 to 2 mM, respectively. The detection limit is 7.6 μM and 1.3 μM for cvp1 and cvp2, respectively at a signal-to-noise ratio of 3. Cu vanadate nanorods modified GCE shows good stability.Keywords: tartaric acid; Cu vanadate nanorods; electrochemical detection; glassy carbon electrode; GCE.Reference to this paper should be made as follows: Pei, L.Z., Wei, T., Lin, N. He has published more than 50 papers, reviews and communications in international journals, such as J. Mater. Chem. A, CrystEngComm, J. Electrochem. Soc., Electrochim. Acta, Phys. Rev. Lett., RSC Adv., J. Alloy Compd. and Mater. Charact. He has also one US patent and more than ten Chinese patents.

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Recent developments in electrochemical sensor application and technology—a review

Cited by 217 publications

References 85 publications

Electrochemically Exfoliated Carbon Quantum Dots Modified Electrodes for Detection of Dopamine Neurotransmitter

Electrochemically Exfoliated Carbon Quantum Dots Modified Electrodes for Detection of Dopamine Neurotransmitter

A Textile Based Polypyrrole Chloride Sensor for Agricultural Use

The electrochemical detection of tartaric acid using Cu vanadate nanorods modified electrode

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