The mathematical modeling for the electropolymerization of acid derivatives of heterocyclic compounds over active metals

The electropolymerization of heterocyclic acid derivatives over active metals in neutral and alkaline media has been mathematically described. The corresponding model was analyzed by means of linear stability theory and bifurcation analysis and compared with the models for analogical systems. The appearance of possible instabilities has been explained and compared to the same of another electropolymerization systems

El Mecanismo de la Oxidación de Omeprazol Sobre el Electrodo de Carbono Vitroso, Modificado por Polializarina, y Su Descripción Matemática

For the electroanalytical work of glassy carbon electrode, modified by polyalizarine, a mechanism, confirmed by experimental observations, has been proposed. This mechanism is also mathematically studied by means of linear stability theory and bifurcation analysis. The stable steady-state conditions, like also the causes for the oscillatory and monotonic instabilities, have been obtained on the base of the analysis of the model. DOI: http://dx.doi.org/10.17807/orbital.v7i1.59

THE MECHANISM OF ANODIC ELECTROOXIDATION OF GABAPENTINE AND ITS MATHEMATICAL EVALUATION

The mechanism for the electrooxidation of gabapentine in aqueous solutions has been suggested. and analyzed electrochemically and mathematically, by using linear stability theory and bifurcation analysis. The steady-state stability requirements, like also oscillatory and monotonic instability conditions, have been detected. The system tends to the similarity with another, describing the modification of conducting polymer

The Theoretical Description for the Perylaldehyde Aldoxyme Anodic Electrochemical Determination, Assisted by the Novel Squaraine Dye Composite with Copper(ii) Sulfide Nanoparticles

In this work the perillaldehyde aldoxime electrochemical determination on an anode, modified by squaraine dye composite with copper sulfide nanoparticles is analyzed. The electroanalytical process involves the formation of trivalent copper species, capable to oxidize the analyte by two parallel mechanisms. The correspondent mathematical model, correspondent to both of them, has been developed and analyzed by means of linear stability theory and bifurcation analysis. The model analysis clearly shows that the composite of a squaraine dye in organic phase and bivalent copper sulfide in the inorganic phase may be an efficient electrode modifier for perillaldehyde aldoxime electrochemical determination on an anode. The electroanalytical process will be mostly kinetically-controlled with the possibility of the transfer to diffusion-controlled mode. On the other hand, both oscillatory and monotonic instabilities may be realized in the electroanalytical process, and their probability will depend on the direction of the electroanalytical scenario in the concrete conditions, due to the possibility of the formation of ionic compounds in the pre-surface layer. DOI: http://dx.doi.org/10.17807/orbital.v13i5.150

SUCRALOSE CoO(OH)-ASSISTED ELECTROCHEMICAL DETECTION IN ALKALINE MEDIA. THE THEORETICAL ANALYSIS OF AN INTERESTING POSSIBILITY

The sucralose electrochemical determination, assisted by cobalt (III) oxyhydroxide, has been theoretically evaluated. The mathematical model, describing the electroanalytical process, has been developed. The analysis of the model by linear stability theory and bifurcation analysis has shown that CoO(OH) may be applied as an efficient electrode modifier in the sucralose determination in neutral and lightly alkaline media. The electrochemical response has to be clear and easy to interpret. The oscillatory and monotonic instabilities may occur due to double electric layer influences of the electrochemical process

The Theoretical Description for the Perylaldehyde Aldoxyme Anodic Electrochemical Determination, Assisted by the Novel Squaraine Dye Composite with Copper(ii) Sulfide Nanoparticles

In this work the perillaldehyde aldoxime electrochemical determination on an anode, modified by squaraine dye composite with copper sulfide nanoparticles is analyzed. The electroanalytical process involves the formation of trivalent copper species, capable to oxidize the analyte by two parallel mechanisms. The correspondent mathematical model, correspondent to both of them, has been developed and analyzed by means of linear stability theory and bifurcation analysis. The model analysis clearly shows that the composite of a squaraine dye in organic phase and bivalent copper sulfide in the inorganic phase may be an efficient electrode modifier for perillaldehyde aldoxime electrochemical determination on an anode. The electroanalytical process will be mostly kinetically-controlled with the possibility of the transfer to diffusion-controlled mode. On the other hand, both oscillatory and monotonic instabilities may be realized in the electroanalytical process, and their probability will depend on the direction of the electroanalytical scenario in the concrete conditions, due to the possibility of the formation of ionic compounds in the pre-surface layer. DOI: http://dx.doi.org/10.17807/orbital.v13i5.150

THE THEORETICAL DESCRIPTION FOR ECOPIPAM ELECTROCHEMICAL DETERMINATION ON A COBALT(III) OXYHYDROXIDE-BASED MATERIAL

The theoretical description for ecopipam electrochemical determination, assisted by cobalt(III) oxyhydroxide has been given. The correspondent mathematical model has been developed and analyzed by means of linear stability theory and bifurcation analysis. It has been shown that, despite of the electrochemical instabilities, more probable to occur than for the similar systems, the cobalt (III) oxyhydroxide is an efficient electrode modifier for ecopipam determination. The electroanalytical process is diffusion-controlled

The Theoretical Description for Magnesium Chlorate Electrochemical Determination on a Magnezone-XC Modified Electrode

An interesting electroanalytical process for magnesium chlorate electrochemical determination has been described theoretically. The process involves the complex formation of magnesium cation with the azo dye Magnezone XC and the electropolymerization of the resulting complex compound in the presence of the chlorate-ion by two parallel mechanisms. The correspondent mathematical model has been developed and analyzed by means of linear stability theory and bifurcation analysis. It has been shown that from both electroanalytical and electrosynthetical points of view the system is efficient. The linear dependence between the electrochemical parameter and salt concentration is obtained easily, and the material formed during the electroanalytical process is highly conductive and catalytic. On the other hand, the oscillatory behavior in this system will be caused by double electric layer influences on both complexation and electropolymerization stages. DOI: http://dx.doi.org/10.17807/orbital.v12i4.153

The Theoretical Description for the Perylaldehyde Aldoxime Electrochemical Determination, Assisted by the Novel Squaraine Dye – VO(OH) - Composite

For the first time, the perillaldehyde aldoxime electrochemical determination has been evaluated from the theoretical point of view. The correspondent mathematical model, including different scenarios of the electroanalytical process, has been developed and analyzed by means of linear stability theory and bifurcation analysis. The model analysis clearly shows that the composite of a squaraine dye in organic phase and vanadium oxyhydroxide in the inorganic phase may be an efficient electrode modifier for perillaldehyde aldoxime electrochemical determination. On the other hand, both oscillatory and monotonic instabilities may be realized in the electroanalytical process, and their probability will strongly depend on the direction of the electroanalytical scenario in the concrete conditions. DOI: http://dx.doi.org/10.17807/orbital.v12i3.149

THE POSSIBILITY OF NALBUPHIN CoO(OH)-ASSISTED ELECTROCHEMICAL DETECTION AND ITS MATHEMATICAL DESCRIPTION

The possibility of nalbuphin electrochemical determination over a CoO(OH)-modified electrode has been studied from the theoretical point of view. The correspondent mathematical model has been developed and analyzed by means of linear stability theory and bifurcation analysis. It was shown that CoO(OH) may be applied as an efficient electrode modifier in the detection of nalbuphin in neutral and lightly alkaline media. The electrochemical response has to be clear and easy to interpret. The possibility of the oscillatory and monotonic instabilities has also been verified