Rifampicin (RIF) compound was analyzed by electrochemical study using cyclic voltammetric method to characterize the electrochemical properties in blood medium. Glassy carbon electrode (GCE) was modified with carbon nanotubes (CNT) as a high sensitive sensor for using in the electro-analysis of RIF in blood medium. It was found that oxidation and reduction current peaks of RIF in blood medium were at the potential of 0.5 and-0.5 V, respectively. Different concentrations, pH, scan rates, reliability and stability of RIF in blood medium were studied. The diffusion coefficient of oxidation and reduction was determined using the Randles-Seveik equation. The result showed the average value of oxidation and reduction were 2.66 × 10-5 and 8.72 × 10-5 cm 2 s-1 , respectively.
The electrochemical effect of different temperatures on sodium saccharine in blood medium using modified working electrode CnT/GCe by cyclic voltammetry Abstract sodium saccharin (nasc) was studied as a chemical compound used for diabetic patients as a replacement for natural sugar. the study was focused on the effect of different temperatures on nasc in human blood medium using cyclic voltammetric technique at modified glassy carbon electrode (Gce) with carbon nanotubes (cnt) as working electrode (cnt/Gce). the physical chemistry functions were studied for the activated values in terms of enthalpy (∆H*), free energy (∆G*) and entropy (∆s*) for redox current peaks of nasc in blood medium at both electrodes, Gce and cnt/Gce using eyring equations. Also, the study included the determination of the activation energy (ea*) determined by Arrhenius equations for the redox current peaks of nasc to compare values obtained by Gce and cnt/Gce. it was found that the values of thermodynamic functions were different due to the oxidation -reduction reaction of nasc in blood medium which reacts with many complex compound with the component of the blood especially hemoglobin as ferric and ferrous ions. the oxidative stress of nasc in blood medium appeared clearly in voltammogram.
Poly (Methyl Methacrylate) (PMMA) was studied as a chemical compound used almost universally for teeth base manufacture. The study was focused on the effect of different temperatures of potassium ferricyanide K3[Fe(CN)6] in 1M KCl as an electrolyte using CV technique at modified glassy carbon electrode (GCE ) with poly-acrylonitrile (PAN) and PMMA as working electrode (PAN/PMMA/GCE). The thermodynamic functions such as activated enthalpy (ΔH*), free energy (ΔG*) and entropy (ΔS*) for redox current peaks of K3[Fe(CN)6] in 1M KCl on (PAN/PMMA/GCE) electrodes, using Eyring was explored. The determination of the activation energy (Ea*) determined by Arrhenius equations for the oxidation-reduction current peaks of K3[Fe(CN)6] to compare values obtained by K3[Fe(CN)6] in 1M KCl on various electrodes was studied.
Sky honey (SH), a kind of sweet was studied to identify its uses in human lives and its applications in different areas. Electrochemical analysis by cyclic voltammetry was used to characterize SH in aqueous solution. Glassy carbon electrode (GCE) was modified with carbon nanotube (CNT), i.e. CNT/GCE by mechanical attachment method via cyclic voltammetric technique to study the oxidation-reduction current peaks of SH at different electrolytes, concentrations, scan rates, pH and temperatures. Moreover, the study included the reliability and stability of CNT on the GCE surface.
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