Analytical and Bioanalytical Electrochemistry is an international scientific journal published online by the Center of Excellence in Electrochemistry at the University of Tehran, Tehran, Iran. The journal was published quarterly from 2009 to 2011, bimonthly from 2011 to 2018, and has been published in at least eight issues per year since 2018.Analytical and Bioanalytical Electrochemistry-11120190131Fe3O4@MCM-48-SO3H/ Multi-Wall Carbon Nanotubes Composite Modified Glassy Carbon Electrode: an Efficient Sensor for Sensitive and Selective Simultaneous Determination of Serotonin and Sertraline in the presence of Uric Acid118717567ENAliBabaeiDepartment of Chemistry, Faculty of Science, Arak University, Arak, I.R. IranInstitute of Nanosciences & Nanotechnology, Arak University, Arak, I.R. IranMohammadAfrasiabiDepartment of Chemistry, Faculty of Science, Arak University, Arak, I.R. IranAkbarYousefiDepartment of Chemistry, Faculty of Science, Arak University, Arak, I.R. IranJournal Article20180522In this study a novel electrode was developed to simultaneous determination of serotonin (5-HT) and sertraline (ST) in the presence of uric acid based on a glassy carbon electrode modified by a composition of Fe3O4@MCM-48-SO3H and multi-wall carbon nanotubes (MWCNTs) (Fe3O4@MCM-48-SO3H/MWCNTs/GCE). The results showed that the modified electrode is a promising one for the simultaneous determination of 5-HT and ST in the presence of uric acid (UA) at optimized circumstances. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were used to study behavior of the modified electrode. The DPV results showed a linear relationship between 5-HT concentration and the oxidation peak current in the concentration ranges from 0.05 μM to 100 μM with a detection limit of 0.015 μM. For ST, a linear relationship between the concentration and the oxidation peak current in the ranges from 0.1 μM to 85 μM was obtained. The corresponding detection limit for ST was 0.025 μM. The Fe3O4@MCM-48-SO3H/MWCNTs/GCE was used for determination of 5-HT and ST in real samples like human blood serum and urine with reasonable outcomes.https://www.abechem.com/article_717567_9d5f8b07097b9397a988474f44792f49.pdfAnalytical and Bioanalytical Electrochemistry is an international scientific journal published online by the Center of Excellence in Electrochemistry at the University of Tehran, Tehran, Iran. The journal was published quarterly from 2009 to 2011, bimonthly from 2011 to 2018, and has been published in at least eight issues per year since 2018.Analytical and Bioanalytical Electrochemistry-11120190101A New Family of Borated Glasses as a Corrosion Inhibitor for Carbon Steel in Acidic Medium (1.0 M HCl)1937739014ENAzeddineElbadaouiLaboratory of Materials, Electrochemistry and Environment, Faculty of Science, Ibn Tofail University, Kénitra, MoroccoMouhsineGalaiLaboratory of Materials Engineering and Environment: Modelling and Application, University Ibn Tofail, Faculty of Sciences, Department of Chemistry, PO Box 133 – 14000- 16 Kenitra, MoroccoSoumyaFerraaLaboratory of Materials, Electrochemistry and Environment, Faculty of Science, Ibn Tofail University, Kénitra, MoroccoHananeBarebitaLaboratory of Materials, Electrochemistry and Environment, Faculty of Science, Ibn Tofail University, Kénitra, MoroccoMohammedCherkaouiLaboratory of Materials, Electrochemistry and Environment, Faculty of Science, Ibn Tofail University, Kénitra, MoroccoTaoufiqGuediraLaboratory of Materials, Electrochemistry and Environment, Faculty of Science, Ibn Tofail University, Kénitra, MoroccoJournal Article20180807The corrosion inhibition of carbon steel in acidic medium (1 M HCl) containing a borated vitreous glasses was studied by electrochemical technique (potentiodynamic polarization and electrochemical impedance spectroscopy).The various vitreous samples were synthesized from ammonium dihydrogen phosphate (NH4) 2HPO4), the niobium oxide Nb2O5, the Bi2O3 bismuth oxide, the B2O3 boron oxide and the niobium oxide Nb2O5. The vitreous compositions are correlated with the system Bi2O3-B2O3- (0.5Nb2O5 -0.5P2O5) by stoichiometric mixing. These phases were characterized by X-ray diffraction (XRD) and infrared spectroscopy (IR). Polarization curve technique reveals that the inhibition efficiency E% increased with the concentration of the different borated vitreous which appears to be a anodic type inhibitors in the acidic medium. Electrochemical impedance spectroscopy confirms this result, indeed the transfer resistance increases with these compounds concentration. The action mechanism of vitreous phases has been elucidated by a thermodynamic study.https://www.abechem.com/article_739014_328a0e10bb5f11cd29060126d8b786d9.pdfAnalytical and Bioanalytical Electrochemistry is an international scientific journal published online by the Center of Excellence in Electrochemistry at the University of Tehran, Tehran, Iran. The journal was published quarterly from 2009 to 2011, bimonthly from 2011 to 2018, and has been published in at least eight issues per year since 2018.Analytical and Bioanalytical Electrochemistry-11120190101Effect of Sodium Phosphate Concentration on Corrosion Behavior of the Coatings Produced by Plasma Electrolytic Oxidation (PEO) on AZ31B Mg Alloy in Body Simulative Fluid3848739015ENRaziehChaharmahaliDepartment of Materials Engineering, Bu-Ali Sina University, Hamedan, 65178-38695, IranMozhganShadabiDepartment of Materials Engineering, Bu-Ali Sina University, Hamedan, 65178-38695, IranKazemBabaeiDepartment of Materials Engineering, Bu-Ali Sina University, Hamedan, 65178-38695, IranSeyed OmidGashtiDepartment of Materials Engineering, Bu-Ali Sina University, Hamedan, 65178-38695, IranArashFattah-alhosseiniDepartment of Materials Engineering, Bu-Ali Sina University, Hamedan, 65178-38695, IranJournal Article20181020In this research, plasma electrolytic oxidation (PEO) coating on AZ31B magnesium alloy having various concentrations has been studied in order to amend the surface corrosion resistance. To do this, phosphate electrolyte with different concentrations of 4, 8 and 10 g/l is investigated. Electrochemical impedance spectroscopy and potentiodynamic polarization tests on an uncoated base alloy and a coated one are studied in a body simulant physiological solution (Ringer's solution). Surface morphology and microstructural surveys were done by X-ray diffraction (XRD) pattern and scanning electron microscopy (SEM). The obtained results of this study displayed that rising the sodium phosphate concentration led to an increase in coating thickness and decreases its porosity. The highest corrosion resistance arose from the lowest corrosion current density (0.45×10-6 A/cm2) of the formed coating in electrolyte containing 10 g/l sodium phosphate.https://www.abechem.com/article_739015_f67fe52e83a8ea28a27e9035cd73a214.pdf