Electrochemical Sensing: Carcinogens in Beverages

Zia, Asif I.; Mukhopadhyay, Subhas Chandra

doi:10.1007/978-3-319-32655-9

Cited by 11 publications

(14 citation statements)

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“…Impedance is merely the opposition force to electrical current in a circuit (measured in the same units as resistance [Ω]) . Though, resistance contrasts from impedance because resistance follows Ohm's law, and is observed in DC circuits where the resistance is the impedance with zero phase angle since the current is not alternating.…”

Section: Principles Of Impedance Spectroscopymentioning

confidence: 99%

“…The principle of IS is to perturb the system with small amplitude alternating current/voltage signal, a wide range of frequencies and to observe how the systems follow the perturbation at the steady state. The amplitude of perturbation must be so small in order to assume the linear behavior of the system . A high precision is obtained with this method because of the sensitivity of the technique.…”

Section: Principles Of Impedance Spectroscopymentioning

confidence: 99%

“…This multi‐frequency excitation permits the measurement of electrical processes that take place within the device without damaging the device structure. IS have two main categories, the first is electrochemical IS (EIS) which deals measurements and investigation of materials in which ionic conduction dominates, such materials are ionic conducting glasses, solid and liquid electrolytes, fused salts, polymers, and nonstoichiometric ionically bonded single crystals . The second category is IS applies to dielectric materials: solid/liquid nonconductors, and to materials with electronic conduction, single‐crystal/amorphous semiconductors, glasses, and polymers, etc.…”

Section: Introductionmentioning

confidence: 99%

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Impedance Spectroscopy: A Versatile Technique to Understand Solution‐Processed Optoelectronic Devices

Ali

Chang

Imran

et al. 2019

Physica Rapid Research Ltrs

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Solution‐processed optoelectronic devices based on conjugated polymers, colloidal quantum dots (CQDs), halide perovskites, and so on are now emerging as a new‐generation semiconductor technology which prevails its conventional counterparts in terms of low fabrication cost, ease of scalable manufacturing, and abundant material designability. However, the solution‐processed thin films obtained through spin‐coating, spray, inkjet printing, and doctor blading usually suffer from low film quality and a high defect density especially at the interfaces of different functional layers. Currently, the most significant subject is to address the non‐ideal interfaces for achieving improved performance of the devices. Impedance spectroscopy (IS) is a universal technique that can help to examine the charge behavior at the interfaces in an electrochemical or solid‐state multilayered device. Owing to its ability to elucidate the charge transfer, charge transport, and accumulation within the interfaces of electrochemical or multilayered devices with minimal effects to the devices themselves, the use of IS has increased vividly in the last decades. This review provides the basic principles of IS and its applications on solution‐processed optoelectronic devices.

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Section: Principles Of Impedance Spectroscopymentioning

confidence: 99%

Section: Principles Of Impedance Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impedance Spectroscopy: A Versatile Technique to Understand Solution‐Processed Optoelectronic Devices

Ali

Chang

Imran

et al. 2019

Physica Rapid Research Ltrs

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“…Modified electrochemical sensors have been widely used during years with a focus on improving the reactivity, selectivity, and sensitivity of the method, enabling the development of sensors with a wide range of applications [1]. More recently, most of the studies involving modified electrochemical sensors have been dedicated to determining emerging contaminants, such as endocrine‐disrupting compounds (EDCs) [2].…”

Section: Introductionmentioning

confidence: 99%

Development of Electrochemical Platform Based on Molecularly Imprinted Poly(methacrylic acid) Grafted on Iniferter‐modified Carbon Nanotubes for 17β‐Estradiol Determination in Water Samples

et al. 2020

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This paper describes the development of a new electrochemical sensor for 17β‐estradiol (E2) determination based on glassy carbon electrode (GCE) modified with molecularly imprinted polymer grafted onto iniferter‐multiwall carbon nanotubes surface (MIP‐MWCNT) and dihexadecyl‐hydrogen‐phosphate (DHP). The electrochemical method was based on closed‐circuit preconcentration of E2 in 0.1 mol L−1 phosphate buffer (pH 7.0) during 500 s. Upon preconcentration, E2 was determined by differential pulse voltammetry (DPV) exhibiting a limit of detection of 0.01 μmol L−1. The sensor exhibited higher selectivity toward E2 and it was applied for E2 determination in natural water samples, with accuracy attested by HPLC‐DAD.

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“…4) show the AC potential (x-axis) and the AC current (y-axis). The information obtained allows the verification of the linearity of the ACIS response in which the AC amplitude should be small enough so that the response of the electrochemical cell can be considered to be linear, but large enough to measure the system response [13,[25][26][27]. The resolution plots (e.g.…”

Section: Initial Cell Set-upmentioning

confidence: 99%

Electrochemical cell design and impedance spectroscopy of cement hydration

Gallardo

Provis

2020

J Mater Sci

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Understanding the complexity of the chemical and microstructural evolution of cement during hydration remains a controversial subject, and although numerous techniques have been used to assess this process, further insight is still needed. Alternating current impedance spectroscopy has been demonstrated to be a sensitive and powerful technique for cement characterisation in both fresh and hardened states; however, it has also shown certain experimental limitations (e.g. data interpretation, electrode, and parasitic effects) that prevent its wider acceptance. This study assesses electrochemical cell design and the impedance response during cement hydration. The results show that a significant decrease in the parasitic effects at high frequencies (caused mainly by leads and electrode effects) can be achieved through an optimal cell design and impedance measurements correction, enabling correlation of impedance measurements to particular aspects of the cement hydration process. However, due the limited solid phase microstructural development and the high conductivity of cement paste at low degrees of hydration, the parasitic effects could not be fully eliminated for fresh or early-age cement pastes.

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Electrochemical Sensing: Carcinogens in Beverages

Cited by 11 publications

References 0 publications

Impedance Spectroscopy: A Versatile Technique to Understand Solution‐Processed Optoelectronic Devices

Impedance Spectroscopy: A Versatile Technique to Understand Solution‐Processed Optoelectronic Devices

Development of Electrochemical Platform Based on Molecularly Imprinted Poly(methacrylic acid) Grafted on Iniferter‐modified Carbon Nanotubes for 17β‐Estradiol Determination in Water Samples

Electrochemical cell design and impedance spectroscopy of cement hydration

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