Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran Analytical and Bioanalytical Electrochemistry - 15 3 2023 03 31 Effect of Electrocoagulation Parameters on Chromium Removal, Sludge Settling, and Energy Consumption 166 183 703899 10.22034/abec.2023.703899 EN Wafa Atba departement of chemistry. faculty of science. university of Badji Mokhtar. Annaba . Algerie. Cherifi Mouna Water Treatment and Valorization of Industrial Wastes Laboratory, Faculty of Science. Department of Chemistry, University of Badji Mokhtar, Annaba, Algeria Grid Azzeddine Research center in technological industries (CRTI), Algeria Debra F. Laefer Center for Urban Science & Progress and the Department of Civil and Urban Engineering, New York University, USA Hazourli Sabir Water Treatment and Valorization of Industrial Wastes Laboratory, Faculty of Science. Department of Chemistry, University of Badji Mokhtar, Annaba, Algeria Journal Article 2022 11 07 Wastewater laden with toxic pollutants, such as chromium (Cr), can hurt humans, the environment, and aquatic life if not properly treated. The present work proposes to study the elimination of 100 mg/l of Cr(VI) ions from a synthetic wastewater effluent using a dynamic electrocoagulation process employing aluminum electrodes. The influences of several parameters are explored for the electrocoagulation process effectiveness in terms of Cr removal yield. This was done within the following ranges: current density (5-22 mA/cm2), initial pH (2-7), and chromium concentration (25-150 mg/l). A settling step was followed to determine the total suspended solids content and the sludge volume index after electrocoagulation treatment. Depending on the operating conditions, the data of specific electrical energy consumption were employed to determine the best operating parameters of the process efficiency. Furthermore, data analysis (Scanning Electron Microscope, Fourier Transform Infrared spectroscopy, X-ray diffraction analysis, and X-ray fluorescence) of sludge formed after electrocoagulation showed an amorphous nature with a high content of aluminum and function groups that should have a potential to be utilized as coagulant/sorbent in wastewater treatment.

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Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran Analytical and Bioanalytical Electrochemistry - 15 3 2023 03 31 Electrochemical Reduction of 2-Substituted Quinoxalines in Aprotic Medium and in Conditions of Protonation 184 197 703900 10.22034/abec.2023.703900 EN Anton Tsmokalyuk Institute of Chemical Engineering, Ural Federal University, Mira 28, Yekaterinburg, Russia, 620002 Polina Mozharovskaia Institute of Chemical Engineering, Ural Federal University, Mira 28, Yekaterinburg, Russia, 620002 0000-0002-2675-5722 Ekaterina Belina Institute of Chemical Engineering, Ural Federal University, Mira 28, Yekaterinburg, Russia, 620002 Ivan Balin Institute of Chemical Engineering, Ural Federal University, Mira 28, Yekaterinburg, Russia, 620002 Emilia Nosova Institute of Chemical Engineering, Ural Federal University, Mira 28, Yekaterinburg, Russia, 620002 I. Ya. Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskaya Str., 22, Yekaterinburg, Russia, 620108 Anatoly Matern Institute of Chemical Engineering, Ural Federal University, Mira 28, Yekaterinburg, Russia, 620002 Alisa Kozitsina Institute of Chemical Engineering, Ural Federal University, Mira 28, Yekaterinburg, Russia, 620002 Journal Article 2022 11 25 The present work is devoted to the electrochemical reduction study of presumably biologically active 2-substituted quinoxaline derivatives. In this work, two new quinoxaline derivatives are presented. The electrochemical behavior of this compound in an aprotic medium and while its protonating was investigated via a voltammetric method. Using computational methods, the localization of the reduction centres depending on the compound’s structure was determined. The EPR spectra data obtained by electrochemical generation reduction product proved that the studied quinoxaline’s electroconversion occurs with radical anion formation. The linear correlation between the reduction potential of studied compounds and energy of their affinity to the electron was found (R2 = 0.933). This confirms the single reduction mechanism of radical nature for the entire series of studied 2-substituted quinoxaline derivatives. Based on that, the electron-accepting ability of these compounds was compared in order to evaluate their possible bioactivity and to select the most perspective ones among them for further research.

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Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran Analytical and Bioanalytical Electrochemistry - 15 3 2023 03 31 Protection of C38 Steel in Acidic Solution by Eucalyptus Sidroxylon Essential Oil 198 213 703901 10.22034/abec.2023.703901 EN L. Koursaoui Laboratories of Microbiology and Chemistry of Aromatic and Medicinal Plants, Forest Research Center, BP 763, Agdal, Rabat, Morocco Biotechnology, Environment and Quality Laboratory, Faculty of Science, Ibn-Tofail University, BP 133, Kenitra, 14000, Morocco Y. Kerroum Laboratory of Materials, Nanotechnology, and Environment, Faculty of Sciences, Mohammed V University in Rabat, 4 Av. Ibn Battouta, B.P 1014 Rabat, Morocco M. Tabyaoui Laboratory of Materials, Nanotechnology, and Environment, Faculty of Sciences, Mohammed V University in Rabat, 4 Av. Ibn Battouta, B.P 1014 Rabat, Morocco A. Guenbour Laboratory of Materials, Nanotechnology, and Environment, Faculty of Sciences, Mohammed V University in Rabat, 4 Av. Ibn Battouta, B.P 1014 Rabat, Morocco A. Bellaouchou Laboratory of Materials, Nanotechnology, and Environment, Faculty of Sciences, Mohammed V University in Rabat, 4 Av. Ibn Battouta, B.P 1014 Rabat, Morocco Abdelkader M Zarrouk Laboratory of Materials, Nanotechnology, and Environment, Faculty of Sciences, Mohammed V University in Rabat, 4 Av. Ibn Battouta, B.P 1014 Rabat, Morocco 0000-0002-5495-2125 I. Warad Department of Chemistry, AN-Najah National University, P.O. Box 7, Nablus, Palestine B. Satrani Laboratories of Microbiology and Chemistry of Aromatic and Medicinal Plants, Forest Research Center, BP 763, Agdal, Rabat, Morocco M. Ghanmi Laboratories of Microbiology and Chemistry of Aromatic and Medicinal Plants, Forest Research Center, BP 763, Agdal, Rabat, Morocco EM. Aouane Biotechnology, Environment and Quality Laboratory, Faculty of Science, Ibn-Tofail University, BP 133, Kenitra, 14000, Morocco A. Chaouch Biotechnology, Environment and Quality Laboratory, Faculty of Science, Ibn-Tofail University, BP 133, Kenitra, 14000, Morocco Journal Article 2023 01 02 Eucalyptus essential oil offers numerous benefits for the immune system through its antioxidant constituents. In this investigation, we attempted to explore another field of application, in which we exploit the corrosion inhibition potential of Eucalyptus Sideroxylon (ES) essential oil to protect C38 steel in an acidic solution of HCl. To uncover the facts, careful research was designed using fundamental measurements of gravimetric and electrochemical techniques, combined with scanning electron microscopy and energy dispersive spectroscopy analysis. The finding measurements showed that ES reduces the rate of corrosion that shows up on polarization curves as a mixed inhibitor. Furthermore, the impedance data acquisition revealed that the amount of charge transfer resistance has a high value when the ES concentration increases, we found 169.40 Ω cm2 for 2.4 g/L of ES giving an efficiency of 80%. Moreover, the thermodynamic parameters showed that the interaction of ES with the metal surface is endothermic, characterized by physical adsorption.

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https://www.abechem.com/article_703902_5e98527c5273307b958d535c29a7f083.pdf

Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran Analytical and Bioanalytical Electrochemistry - 15 3 2023 03 31 Quantitative Determination of Duloxetine Hydrochloride in Biological Samples of Blood Serum and Urine Using a Novel Potentiometric Sensor 229 239 703903 10.22034/abec.2023.703903 EN Parvin Pourhakkak Department of Chemistry, Payame Noor University, 19395-4697, Tehran, Iran Mohammad Ali Karimi Department of Chemistry, Payame Noor University, 19395-4697, Tehran, Iran Hossein Tavallali Department of Chemistry, Payame Noor University, 19395-4697, Tehran, Iran Mohammad Mazloum Ardakani Department of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, I.R. Iran Pouran Pourhakkak Department of Chemistry, Payame Noor University, 19395-4697, Tehran, Iran Eisa Rahimi Department of Chemistry, Payame Noor University, 19395-4697, Tehran, Iran Journal Article 2022 12 27 In this work, a potentiometric sensor was developed based on polyvinyl chloride (PVC), duloxetine tetraphenylborate ion pair, various plasticizers of dioctyl phthalate (DOP), benzyl butyl phthalate (BBP), di(2-ethylhexyl)phthalate (DEPH), tris(2-ethylhexyl) phosphate (TEPH), dibutyl butyl phosphonate (DBBPh), dibutyl phthalate (DBP), dioctyl sebacate (DOS), dibutyl sebacate (DBS), 2-nitrophenyl octyl ether (NPOE) and di-octyl phthalate (DOPH)) and THF as membrane solvent. The electrode responses at various contents of PVC and plasticizer were recorded to optimize their percentage compositions, and the best Nernst response (59.7) was obtained. The linear concentration range for this electrode made by optimal composition is 0.7 µM to 0.1 M with a detection limit of 0.3 µM. The response time of the ion-selective electrode based on the duloxetine-tetraphenylborate ion pair was determined. The effect of pH on the potential of duloxetine hydrochloride (DHCl) solution with a concentration of 1.0 mM was studied. Moreover, the performance of the prepared electrode was studied over two months to investigate the constructed membrane electrode’s stability. The selectivity coefficients of the electrode for determination of DHCl in the presence of some ions and molecules including Na+, K+, Li+, Ni+, Mg2+, Cd2+, Zn2+, Mn2+, Fe2+, Ca2+, Cu2+, Co2+, Cr2+, ascorbic acid, D-fructose, sucrose, aspartic acid, L-H-histidine, dopamine, glucose, uric acid, propranolol, dexamethasone and melatonin were determined using a separate solution method (SSM) and an adapted potential method. The application of the proposed sensor to determine DHCl in two biological matrices, including blood serum and urine samples, was also investigated.

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Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran Analytical and Bioanalytical Electrochemistry - 15 3 2023 03 31 Development of Potentiometric Evaluations of Ranitidine in Pure and Pharmaceutical Products 240 250 703904 10.22034/abec.2023.1975892.1291 EN Omar Salih Hassan Department of Chemistry, College of Education for Pure Science, Tikrit University, Tikrit, Iraq Salma Anwer Abdullah Department of Clinical laboratory sciences, College of Pharmacy, Tikrit University, Tikrit, Iraq Amina Mohsen Abass Department of Chemistry, College of Science, Al-Nahrain University, Al-Jaderia, Baghdad, Iraq Journal Article 2022 12 04 Ranitidine ion-selective membrane electrodes were fabricated from PVC matrix and ranitidine hydrochloride (RNH-HCl)-phosphotungestic acid (PTA) as the detecting components in the existence of di-n-octyl phthalate (DOPH), di-n-butyl phthalate (DBPH) and dibutyl phosphate (DBP) as the solvent mediator and plasticizing the PVC membrane. The electrodes were prepared with DOPH (electrode 1), and DBPH (electrode 2) gave a Nernstian, stable, and rapid response, which displayed linear response in the concentration range of 1.0×10-6-1.0×10-2 mol.L-1 and 2.03×10-6-1.0×10-2 mol.L-1, with Nernstian slope of 58.73, and 52.50 mV.decade-1 for electrode 1 and electrode 2 respectively. Limits of detection 9.30×10-7 and 3.70×10-7 mol.L-1 for electrodes 1 and 2, respectively were also obtained. Individual electrodes were operative at the pH range of 3.0-5.5 and 3.5-5.5. The membrane electrodes showed excellent selectivity for the drug ranitidine in comparison with various inorganic cations. The electrodes showed a cycle of 55,50 days not including major variations in the parameters of the electrodes. Sensor 3 was given a non-Nernstian response equal to 28.76 mV.decade-1 and the range of concentration was 2.0×10-6-1.0×10-2 mol.L-1 with a limit of detection near 3.68×10-7 mol.L-1. Ranitidine can be determined effectively in unmixed and pharmaceutical formulations using these designated methods.

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