scholarly journals Theoretical Description for Sunset Yellow Electrochemical Determination in Food, Assisted by Poly(3,4-ethylenedioxypyrrole) – VO(OH) Composite

2020 ◽  
Vol 11 (4) ◽  
pp. 11519-11524
Keyword(s):  
Bifurcation Analysis ◽  
Double Electric Layer ◽  
Electrochemical Determination ◽  
Theoretical Description ◽  
Equation Model ◽  
Linear Stability Theory ◽  
Sunset Yellow ◽  
Ionic Force ◽  
Cyclic Changes ◽  
Ionic Forms

In this work, the possibility for sunset yellow electrochemical determination, assisted by the composite of VO(OH) with conducting polymer, has been evaluated theoretically. The correspondent balance equation model of three variables has been developed and analyzed by means of linear stability theory and bifurcation analysis. The oscillatory and monotonic instabilities are shown to be manifested more probably than for the simplest case. The double electric layer (DEL) is influenced by the cyclic changes of ionic force observed during ionic forms' chemical transformation. Nevertheless, the CP – VO(OH) composite may be considered an efficient electrode modifier for yellow sunset determination.

scholarly journals The Theoretical Description for the Electrochemical Determination of Anti-COVID-19 Drug Umifenovir, Assisted by a Poly(squaraine dye-co-naphthoquinones) Composite with CoO(OH), Paired with CoO2

2020 ◽  
Vol 10 (1) ◽  
pp. 1962-1968
Keyword(s):  
Mathematical Model ◽  
Bifurcation Analysis ◽  
Double Electric Layer ◽  
Electrochemical Determination ◽  
Theoretical Description ◽  
Oscillatory Behavior ◽  
Linear Stability Theory ◽  
Squaraine Dye ◽  
First Time

For the first time, the system with anti-COVID19 drug umivenofir electrochemical determination, assisted by a Squaraine Dye – CoO(OH)/CoO2 composite, has been described theoretically. The mechanism contains hydrolysis, chemical, and electrochemical oxidation stages. The correspondent mathematical model has been developed and analyzed using linear stability theory and bifurcation analysis. Despite the branched character of the mechanism, the composite of Squaraine Dye with CoO(OH)/CoO2 may be an efficient electrode modifier for the umivenofir determination. However, the oscillatory behavior may be possible, but only because of double electric layer influences on the electrochemical stage.

scholarly journals Theoretical Description for Chlorantraniliprole Electrochemical Determination, Assisted by Squaraine Dye Nano Ag2O2 Composite

2020 ◽  
Vol 11 (2) ◽  
pp. 9278-9284
Keyword(s):  
Mathematical Model ◽  
Reaction Mechanism ◽  
Bifurcation Analysis ◽  
Electrochemical Determination ◽  
Theoretical Description ◽  
The Other ◽  
Linear Stability Theory ◽  
Oxide Nanoparticles ◽  
Monotonic Instability ◽  
Squaraine Dye

The theoretical description for the chlorantraniliprole electrochemical determination, assisted by the hybrid composite of squaraine dye with Ag2O2 nanoparticles, has been described. The correspondent reaction mechanism has been proposed, and the correspondent mathematical model has been developed and analyzed by means of linear stability theory and bifurcation analysis. It has been shown that the chlorantraniliprole electrochemical anodic determination on high potential may be efficiently provided by silver (I, III) oxide nanoparticles, stabilized by the squaraine dye. On the other hand, the oscillatory and monotonic instability is also possible, being caused by DEL influences of the electrochemical stage.

scholarly journals Electrochemical Determination of Sudan Dyes and Two Manner to Realize it: a Theoretical Investigation

2020 ◽  
Vol 9 (4) ◽  
pp. 1451-1458
Keyword(s):  
Mathematical Models ◽  
Bifurcation Analysis ◽  
Stability Theory ◽  
Electrochemical Determination ◽  
Theoretical Description ◽  
Point Of View ◽  
Linear Stability Theory ◽  
Sudan Dyes ◽  
Monotonic Instability

In this work, a general theoretical description of the electrochemical determination of Sudan dyes by cathodic and anodic route has been made. Two mathematical models have been developed for each case, being, afterward, analyzed by means of linear stability theory and bifurcation analysis. It has been shown that in both cases, the systems are efficient from the electroanalytical point of view. The possibility for the oscillatory and monotonic instability has also been verified.

scholarly journals The Mathematical Modeling for CoO(OH) – Poly(5-Amino-1,4-Naphthoquinone) Composite-Based Sensor for 1-Propenesulfenic Acid and Propanethial S-Oxide Detection in Food and Lacrimogenic Compositions

2020 ◽  
Vol 11 (4) ◽  
pp. 11145-11150
Keyword(s):  
Mathematical Modeling ◽  
Linear Stability ◽  
Bifurcation Analysis ◽  
Stability Theory ◽  
Double Electric Layer ◽  
Theoretical Description ◽  
Linear Stability Theory ◽  
Acid Oxidation ◽  
Sulfenic Acid ◽  
Monotonic Instability

The theoretical description for 1-propenesulfenic acid and its isomer propanethial-S-oxide, substances, responsible for leek lacrimogenic activity, has been described theoretically. The process is realized anodically over a poly(naphthoquinone) – CoO(OH) composite. A model has been developed and analyzed using linear stability theory and bifurcation analysis. According to the model analysis, the ionic compound's transformation during the sulfenic acid oxidation may be responsible for the oscillatory and monotonic instability alongside the double electric layer (DEL) influences of the electrochemical stage. Nevertheless, the model's analysis shows that the electroanalytical process is efficient for determining both of the analytes.

scholarly journals Theoretical Description for Sucralose Cathodical Electrochemical Determination on the Conducting Polymer, Containing Pyridinic Nitrogen Atoms

2021 ◽  
Vol 12 (2) ◽  
pp. 1499-1506
Keyword(s):  
Mathematical Model ◽  
Linear Stability ◽  
Conducting Polymer ◽  
Bifurcation Analysis ◽  
Stability Theory ◽  
Electrochemical Determination ◽  
Theoretical Description ◽  
Oscillatory Behavior ◽  
Linear Stability Theory ◽  
Pyridinic Nitrogen

A novel process for sucralose cathodically electrochemical determination has been suggested. In this process, the conducting polymer with pyridinic nitrogen atoms reacts specifically with sucralose, yielding a salt. This salt is thereby reduced gradually, yielding a less conducting macromolecule. The analysis of the correspondent mathematical model, realized through the linear stability theory and bifurcation analysis, shows that the oscillatory behavior is more probable to be realized due to charge changes and rearrangements during the electroanalytical process its influence on the surface and DEL conductivity. Nevertheless, this process may be efficient for the sucralose electrochemical determination.

scholarly journals Theoretical Description for Anti-COVID-19 Drug Remdesivir Electrochemical Determination, Assisted by Squaraine Dye–Ag2O2 Composite

2020 ◽  
Vol 11 (2) ◽  
pp. 9201-9208
Keyword(s):  
Mathematical Model ◽  
Bifurcation Analysis ◽  
Stability Theory ◽  
Electrochemical Determination ◽  
Theoretical Description ◽  
Linear Stability Theory ◽  
Anodic Process ◽  
Squaraine Dye ◽  
First Time ◽  
Mathematical Model Analysis

For the first time, the remdesivir anti-COVID-19 drug electrochemical determination has been evaluated theoretically. In this work, an anodic process involving the Squaraine Dye – Ag2O2 composite has been evaluated. The mechanism of the electroanalytical process is branched, which implies relatively dynamic behavior. Nevertheless, the correspondent mathematical model analysis, made by linear stability theory and bifurcation analysis, confirms the composite electroanalytical efficiency as an electrode modifier.

scholarly journals Theoretical Description for Ellagic Acid Electrochemical Oxidation and Electropolymerization

2021 ◽  
Vol 11 (3) ◽  
pp. 3672-3677
Keyword(s):  
Mathematical Model ◽  
Electrochemical Oxidation ◽  
Bifurcation Analysis ◽  
Ellagic Acid ◽  
Stability Theory ◽  
Polymer Coating ◽  
Theoretical Description ◽  
Oscillatory Behavior ◽  
Oxidation Products ◽  
Linear Stability Theory

The theoretical description for ellagic acid electrochemical oxidation and electropolymerization has been suggested in this paper. The model includes the electropolymerization of ellagic acid in the presence of two of its low-molecular oxidation products. The correspondent mathematical model has been developed and analyzed using linear stability theory and bifurcation analysis. The analysis of the system has confirmed that the oscillatory behavior is more probable than in the simplest case of the electrosynthesis of the polymer of the electrochemically synthesized monomer. Nevertheless, the system is electrosynthetically efficient, yielding a polymer coating.

scholarly journals The theoretical description for the electrochemical determination of 4-4´-dihydroxyazobenzene, assisted by a composite of squaraine dye with cobalt (iii) oxyhydroxide in pair with cobalt (iv) oxide

2020 ◽  
Vol 10 (6) ◽  
pp. 619
Author(s):  
Volodymyr Valentynovych Tkach ◽  
Marta V. Kushnir ◽  
Oleksandra V. Ahafonova ◽  
Mariia P. Mytchenok ◽  
Andrii V. Bocharov ◽  
...  
Keyword(s):  
Double Electric Layer ◽  
Electrochemical Determination ◽  
Theoretical Description ◽  
The Other ◽  
System A ◽  
Diffusion Controlled ◽  
Squaraine Dye ◽  
Efficient Diffusion ◽  
Biological Liquids

<p>The theoretical description for 4-4´-dihydroxyazobenzene CoO(OH) – assisted electrochemical determination in the mushroom pulp, food, and biological liquids has been described. In this system, a squaraine dye is used as a Cobalt(III)oxyhydroxide stabilizer and electron transfer mediator. It is shown that, contrary to the large part of the systems with cobalt (III) oxyhydroxide, this system will behave more stably, providing an efficient diffusion-controlled process. On the other hand, the oscillatory and monotonic instabilities, although possible, are caused by the double electric layer influences of either chemical or electrochemical stage.</p>

scholarly journals Theoretical Description for an Efficient Rhenium Electrocatalytical Recuperation by Polypyrrole Overoxidation

2021 ◽  
Vol 10 (3) ◽  
pp. 2396-2401
Keyword(s):  
Mathematical Model ◽  
Linear Stability ◽  
Bifurcation Analysis ◽  
Stability Theory ◽  
Theoretical Description ◽  
Oscillatory Instability ◽  
The Other ◽  
Linear Stability Theory ◽  
Other Hand

An interesting process for rhenium recuperation during the polypyrrole overoxidation has been theoretically described. The correspondent mathematical model has been developed and analyzed using linear stability theory and bifurcation analysis. The model's analysis confirms the possibility for the efficient rhenium ion capture by polypyrrole overoxidation, yielding a long-living electrocatalytic material. On the other hand, oscillatory instability is also possible in both stages.

scholarly journals Theoretical Evaluation for the Function of Economical and Green Conducting Composite Material-based Chip for Jamaican Vomiting Sickness Diagnostics

2020 ◽  
Vol 11 (3) ◽  
pp. 10317-10324
Keyword(s):  
Mathematical Model ◽  
Composite Material ◽  
Amino Acid ◽  
Double Electric Layer ◽  
Electrochemical Determination ◽  
The Other ◽  
Linear Stability Theory ◽  
Theoretical Evaluation ◽  
Efficient Manner ◽  
Conducting Composite

A possibility of an economical and green conducting-polymer composite base chip for Jamaican vomiting sickness diagnostics by hypoglycin electrochemical determination has been evaluated. The correspondent mathematical model has been developed and analyzed by means of linear stability theory and bifurcation analysis. It has been detected that the chip is efficient for either reduced or semi-oxidized form determination in an efficient manner, so it may serve as a rapid hypoglycin intoxication diagnostics tool. On the other hand, as all of the correspondent components possess amino acid moieties, influencing the double electric layer ionic forces.

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