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 - 12 7 2020 07 31 A Promising Enhanced Polymer Modified Voltammetric Sensor for the Quantification of Catechol and Phloroglucinol 893 903 43499 EN Jamballi G. Manjunatha Department of Chemistry, FMKMC College, Madikeri, Mangalore University Constituent College, Karnataka, India 0000-0002-0393-2474 Journal Article 2020 05 25 In the present paper, poly(Tyrosine) modified graphene paste electrode (PTMGPE) was fabricated by utilizing an electropolymerization technique. Deposition of polymer film at bare graphene paste electrode (BGPE) was characterized by field emission scanning electron microscopy (FE-SEM). The PTMGPE was applied for Voltammetric detection of catechol (CC) and its quantification in phosphate buffer solutions of pH 7.0 (PBS). The detected cyclic voltammetric oxidation current of CC and phloroglucinol (PG) on PTMGPE is nearly 4 times higher with controlled over potential as a contrast to BGPE. This result shows the electrocatalytic effect of the poly (Tyrosine) layer. The differential pulse voltammetry (DPV) results show that CC and PG can be detected instantaneously using PTMGPE with peak separation of 0.300 V between CC and PG. Also, DPV showed two linear current responses in the concentration range of 2×10^-6 to 1×10^-5 M and 1.5×10^-5 to 5×10^-5 M with a coefficients of correlation 0.9951 and 0.9976 respectively. The detection limit (DL) and quantization limit (QL) were found to be 3.04×10^-7 and 10×10^-7 mol L^-1 respectively. Further, we have also studied real sample analysis in tap water using proposed PTMGPE in the form of recovery studies and the achieved outcomes are found to be excellent agreement with the previous results. The PTMGPE shows exceptional selectivity, good sensitivity, and steadiness, making it as an attractive and alternative sensor for concurrent determination of CC and PG. https://www.abechem.com/article_43499_e74df46fbad5c5dfe88af7f33125a3f7.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 - 12 7 2020 07 31 Corrosion Behavior of Ti/TiN Multilayer Nanostructured Coatings Applied on AISI 316L by Arc-PVD Method in the Simulated Body Fluid 904 921 43500 EN Shiva Zaheri Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran Arash Fattah-alhosseini Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran Hassan Elmkhah Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran Kazem Babaei Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran Omid Imantalab Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran Journal Article 2020 05 22 In this investigation, Ti/TiN nanolayer and TiN single layer coatings were coated on substrate of AISI 316L stainless steel by applying physical vapor deposition (PVD) using the type of cathodic arc evaporation (CAE). The evaluation of microstructure were carried out using x-ray diffraction (XRD), nanoindentation, atomic force microscopy (AFM) as well as scanning electron microscopy (SEM). Polarization and impedance tests were utilized to study the coatings corrosion behavior in the simulated body solution (SBF) in different immersion times. Utilizing CAE technique, high density and adhesion Ti/TiN nanolayer and TiN single layer coatings were successfully made. The corrosion results showed that Ti/TiN nanolayer coating had an exceptionally high polarization resistance compared to 316L substrate and TiN single layer coating. Furthermore, the corrosion results indicated the desired corrosion behavior in the nanolayer coating towards the single layer within the SBF, as a result of the distinct layers presence resulting in a barrier against penetration of the corrosive media. https://www.abechem.com/article_43500_dd6e83b6da55d90f5740e0dd3f3e5a13.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 - 12 7 2020 07 31 Synthesis, Characterization, Electrochemical and Antimicrobial Studies of N4-Macrocycles of Cobalt(II) and Nickel(II) Metal Ions 922 930 43501 EN Anuj Kumar Department of Chemistry, GLA University, Mathura, India Vinod Kumar Vashistha Department of Chemistry, GLA University, Mathura, India Saeed Ahmed Department of Chemistry, Hong Kong University of Science and Technology, Hong Kong Asif Ali Beijing University of Chemical Technology, China Dipak Kumar Das Department of Chemistry, GLA University, Mathura, India Journal Article 2020 06 04 The precise analysis of redox chemistry of MN₄-based macrocyclic complexes is of great importance because of stabilization of unusual oxidation states of metal ions by macrocyclic ligand and thus have various applications in biochemistry, electrochemistry, electrocatalysis, pharmaceuticals etc. In this work, MN₄-macrocyclic complexes of Co (II) and Ni(II) transition metal ions have been synthesized by using template condensation method. Further, the MN₄-macrocyclic complexes were characterized by elemental, molar conductance and multiple spectroscopic analysis. The spectral and elemental analysis suggested that both complexes would possess the saddle shape distorted octahedral geometry. Further, the electrochemical investigation of both complexes was carried out by cyclic voltammetry. Both complexes showed quasi-reversible one-electron transfer redox process indicating the stabilization of oxidation state of central metal ions. Moreover, the MN₄-macrocyclic complexes have shown to have good antimicrobial activity against the various pathogens such as Escherichia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa), Bacillus subtilis (B. subtilis) and Staphylococcus aureus (S. aureus). https://www.abechem.com/article_43501_edea466624e316fb14fd8bc274cdb051.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 - 12 7 2020 07 31 Reduced Graphene Oxide-Cr2O3 Nanocomposite as Electrode Material in Supercapacitors 931 943 43502 EN Kourosh Adib Department of Chemistry, Faculty of Science, University of Imam Hossein, Tehran, Iran Behnam Chameh Materials and Energy Research Center (MERC), P.O. Box 31787-316, Karaj, Iran Fardin Gravand Department of Chemistry, Faculty of Science, University of Imam Hossein, Tehran, Iran Journal Article 2020 06 04 In recent years, electrochemical supercapacitors have received considerable attention from many researchers. Metal oxides such as chromium oxide with high redox activity, high specific capacity, and excellent reversibility are suitable alternatives to ruthenium oxide in supercapacitor applications. In this study, first, graphene oxide (GO) was synthesized by the modified Hummers method. The synthesized GO was reduced using hydrazine hydrate (HH.rGO) and thermal reduction (Th.rGO). Also, chromium oxide (Cr₂O₃) was synthesized using a simple method. The synthesized compounds were characterized using the scanning electron microscope, infrared spectroscopy, and X-ray diffraction methods. Then Cr₂O₃ and reduced GO were mixed in N-methyl pyrrolidone at a ratio of 20:80. Electrochemical properties of HH.rGO/Cr₂O₃ and Th.rGO/Cr₂O₃ nanocomposites were evaluated by cyclic voltammetry, electrochemical impedance spectroscopy, and chronopotentiometry methods. The supercapacitor studies show that the nanocomposites have excellent reversible supercapacitor behavior and suitable electrochemical performance. The specific capacity of HH.rGO/Cr₂O₃ and Th.rGO/Cr₂O₃ electrodes were 101 F/g and 151 F/g, respectively at the scan rate of 2 mV/s. These results indicate that the composition of Cr₂O₃ with GO increases the specific capacity of supercapacitor due to the synergistic effect of GO and metal oxide. https://www.abechem.com/article_43502_2a20ab109d1200c52d7bde56ad3e66e3.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 - 12 7 2020 07 31 Effect of Aaronsohnia Pubescens Extracts to Prevent Against the Corrosion of Mild Steel in 1.0 M HCl 944 958 43503 EN Mounir Manssouri Moulay Ismail University of Meknes, Laboratory of Natural Substances & Synthesis and Molecular Dynamics, Faculty of Sciences and Techniques, BP 509, 52000, Errachidia, Morocco 0000-0001-9064-398X Mohamed Znini Moulay Ismail University of Meknes, Laboratory of Natural Substances & Synthesis and Molecular Dynamics, Faculty of Sciences and Techniques, BP 509, 52000, Errachidia, Morocco Yassir El Ouadi Laboratory of Analytical Chemistry, Materials, and Environment (LC2AME), Faculty of Sciences, University of Mohammed Premier, B.P. 717, 60000 Oujda, Morocco Amal Laghchimi Moulay Ismail University of Meknes, Laboratory of Natural Substances & Synthesis and Molecular Dynamics, Faculty of Sciences and Techniques, BP 509, 52000, Errachidia, Morocco Moussa Ouakki Laboratory of Materials Engineering and Environment: Modelling and Application, Faculty of Science, University Ibn Tofail, BP 133, 14000 Kenitra, Morocco 0000-0002-6265-4734 Lhou Majidi Moulay Ismail University of Meknes, Laboratory of Natural Substances & Synthesis and Molecular Dynamics, Faculty of Sciences and Techniques, BP 509, 52000, Errachidia, Morocco Journal Article 2020 06 04 The corrosion inhibition and adsorption (CIA) performance of the aqueous extracts of Aaronsohnia pubescens aerial parts (Odorized aqueous extract (OE) and Deodorized aqueous extract (DE)) on the corrosion mild steel (MS) in 1M hydrochloric acid were evaluated. It is based on the weight loss (WL) analysis, kinetic and thermodynamic parameters, and electrochemical methods both stationary (Potentiodynamic polarization (PDP)) and transient (Electrochemical impedance spectroscopy (EIS)). The inhibition efficiency of inhibitors increases for the concentration of 1.5 g/L; reaching a high value of 93.11 and 87.88 % in 1 M HCl solution at 308 K for OE and DE, respectively. The thermodynamic kinetic parameters showed that the adsorption of OE and DE on the MS surface follows the Langmuir adsorption isotherm. Furthermore, PDP measurements exhibited that the studied of each inhibitor performs as a mixed-type inhibitor. OE shows itself to be the best aqueous extract of Aaronsohnia pubescens aerial parts to prevent against the corrosion of mild steel. https://www.abechem.com/article_43503_b0a5b62f84451f65fd79ef6c0c79738b.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 - 12 7 2020 07 31 Synthesis of Pt-SWCNTS Conductive Nanocomposite by Microwave Heated Polyol Strategy; Application for Amplification of 5-Fluorouracil Anticancer Drug Electrochemical Sensor 959 969 43504 EN Kobra Niazazari Department of Physics, Sari Branch, Islamic Azad University, Sari, Iran Ali Pahlavan Department of Physics, Sari Branch, Islamic Azad University, Sari, Iran Hassan Karimi-Maleh Department of Chemical Engineering, Quchan University of Technology, Iran Ahmad Ahmadi Fouladi Department of Physics, Sari Branch, Islamic Azad University, Sari, Iran Journal Article 2020 06 06 In this study, a simple strategy was described for the synthesis of Pt-SWCNTs conductive nanocomposite by microwave heated polyol method and nanocomposite characterized by EDS, FESEM, and XRD method. The Pt nanoparticles were decorated at the surface of SWCNTs with a diameter of 22.3 nm. The synthesized nanocomposite was used for modification of the carbon paste electrode (CPE) in the presence of n-hexyl-3-methylimidazolium hexafluorophosphate (nH3MHP) and paraffin oil as binders. The Pt-SWCNTs/nH3MHP/CPE was showed a good catalytic effect for electro-oxidation of the 5-fluorouracil anticancer drug in aqueous solution. In comparison to CPE, the Pt-SWCNTs/nH3MHP/CPE increased oxidation current of 5-fluorouracil (⁓4.47 times) and reduce oxidation potential of this anticancer drug ⁓125 mV. On the other hand, Pt-SWCNTs/nH3MHP/CPE was successfully used for the determination of 5-fluorouracil anticancer drugs in injection samples with acceptable recovery data (96.13%-103.5%). According to recorded results, the sensor has a powerful tool for determination of 5-fluorouracil anticancer drug in real samples. https://www.abechem.com/article_43504_3582bcd4a5242afadea1ea3eaa26d4f1.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 - 12 7 2020 07 31 Berberis Aristata: A Highly Efficient and Thermally Stable Green Corrosion Inhibitor for Mild Steel in Acidic Medium 970 988 43505 EN Nabin Karki Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal Bhaktapur Multiple Campus, Tribhuvan University, Bhaktapur, Nepal Shova Neupane Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal 0000-0002-3692-5123 Yogesh Chaudhary Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal Dipak Kumar Gupta Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal Trichandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal Amar Prasad Yadav Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal 0000-0002-8592-4856 Journal Article 2020 07 11 Plant extracts are extensively researched as a source of green corrosion inhibitors. Herein, we report on a highly efficient and thermally stable corrosion inhibitor from the stem extract of high-altitude shrub Berberis aristata. The corrosion inhibition efficiency (IE) of the extract was tested in 1.0 M H2SO4 for the corrosion protection of mild steel (MS) by using gravimetric and electrochemical measurements. It displayed a remarkable IE of 90% at 200 ppm and reached to 98.18% at high concentration (1000 ppm) at room temperature. The thermal stability of the adsorbed extract was uncommon among the recently reported plant extracts, giving an IE of 80% at 338K. Besides, the adsorption of the extract was extremely efficient, producing an IE of 90% in 15 min. The thermodynamic parameters (ΔG and Ea) showed a chemisorption dominated behavior of the extract. Electrochemical measurements indicated a mixed type of inhibitor, and the extract suppressed the corrosion rate by blocking the active surface of the MS. https://www.abechem.com/article_43505_51a9f18aee2f0afe795224d681c9b5ac.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 - 12 7 2020 07 31 A Green Potentiometric Application for Selective Monitoring of Doxylamine Succinate Dissolution Profile in Combined Dosage Form 989 1001 43506 EN Dina A Ahmed Pharmaceutical chemistry department, Faculty of pharmaceutical science and pharmaceutical industries, Future University in Egypt, Cairo, Egypt Mohamed K. Abd El-Rahman Analytical chemistry department, Faculty of pharmacy, Cairo University, Cairo, Egypt Hayam M. Lotfy Pharmaceutical chemistry department, Faculty of pharmaceutical science and pharmaceutical industries, Future University in Egypt, Cairo, Egypt Soheir A. Weshahy Analytical chemistry department, Faculty of pharmacy, Cairo University, Cairo, Egypt Journal Article 2020 06 22 "Green analytical chemistry" (GAC) succeeded to become an eco-friendly environmental crucial area in the field of analytical chemistry targeting at the chemical processes' and products' optimization regarding to material consumption, generation of waste and intrinsic safety, toxicity and environmental burdens. For an expressive comparison, an electro-analytical in-line potentiometric selective determination of Doxylamine succinate (DOX) in a multi- component pharmaceutical dosage form containing both Caffeine (CAF) and Paracetamol (PAR) has been successfully developed and validated. A real-time monitoring of the dissolution profile of DOX from its pharmaceutical formulation was achieved by the proposed sensor without any interference from paracetamol or caffeine even without pretreating neither the sample nor its derivatization. A cationic exchanger; Potassium tetrakis (4-chlorophenyl) borate (KTCPB), polyvinyl chloride (PVC) based membrane and a plasticizer; 2-nitrophenyl-octyl-ether (2-NPOE) were employed for the fabrication DOX-selective sensor. The proposed sensor showed Nernstian response slope of 29.8 mV/concentration decades from 10^-6 to 10^-2 mol L^-1. ICH guidelines' validation parameters; linearity, accuracy, precision and robustness were performed on the proposed green eco-friendly potentiometric method. https://www.abechem.com/article_43506_77a2de98440845afecb786997668d516.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 - 12 7 2020 07 31 Application of FFT Cyclic Voltammetry for Monitoring Removal of Mercury Ions from Aqueous Environment using New Adsorbent based Modified Mesoporous Silica (SBA–15) 1002 1013 43507 EN Mehdi Esmaeili Bidhendi School of Environment, College of Engineering, University of Tehran, P. O. Box 14155-6135, Tehran, Iran Gholam Reza Nabei School of Environment, College of Engineering, University of Tehran, P. O. Box 14155-6135, Tehran, Iran Hamid Rashedi School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran Naser Mehrdad School of Environment, College of Engineering, University of Tehran, P. O. Box 14155-6135, Tehran, Iran Journal Article 2020 04 05 As the electrochemical method, the Fast Fourier Transform (FFT) Stripping Cyclic Voltammetry detection method was designed for measurement and monitoring of adsorbed mercury ions by new modified adsorbent based on mesoporous silica as a new adsorbent. In this respect, SBA-15 as mesoporous silica and 1, 3, 5 Trithiane as effective modifier ligand were chosen, and the modification process was carried out physically. Continuing research application of modified mesoporous silica for the removal of mercury ions (Hg²⁺) from the aquatic environment in different pH, the weight of adsorbent and, stirring time as the major parameters were investigated and analysis of flow-injection was used as the major method for determination of adsorbed mercury ions by modified SBA-15. Also, a special computer numerical technique is used to calculate Hg response based on the total charge exchange at the electrode surface, where the currents were integrated into the range of reduction of Hg. The time for stripping was less than 300 ms. The results showed that the best Hg²⁺ ions removal conditions were achieved at the 15.0 mg of modified adsorbent, pH 5.0 and stirring time 15 min; Also the maximum percentage removal of Hg²⁺ ions and the capacity of the adsorbent were found to be 85% and 10.6 mg of Hg²⁺ ions /g modified SBA-15, respectively. https://www.abechem.com/article_43507_b3101eef45fdacc2076e2043d1b3c39f.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 - 12 7 2020 07 31 In Situ Voltammetric Determination of Promethazine on Carbon Paste Electrode Modified with Nano-sized Molecularly Imprinted Polymer 1014 1024 43508 EN Maedeh Akhoundian Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran Taher Alizadeh Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran Journal Article 2020 05 12 A precise and simple in-situ voltammetric measurement of promethazine, based on the nano sized molecularly imprinted polymer (nano-MIP) was introduced. The nano-MIP was synthesized utilizing vinyl benzene and Divinylbenzene as the functional monomer and cross-linker respectively, and via the micro-emulsion polymerization method in silicon oil. The MIP particles were then embedded in a carbon paste electrode (CPE) in order to prepare the MIP-CP electrode. This electrode showed higher response to analyte, compared to the both bare CPE and modified with non-imprinted polymer. Also, the selectivity of the MIP-CPE was investigated using some of the cross reactants and the sensor was clearly selective towards the PMZ. Various factors, known to affect the response behavior of the sensor, were investigated and optimized. This sensor exhibited two distinct linear response ranges of 4× 10^-9-4×10^-7 M and 4×10- -7×10-6 M in optimum analysis conditions. Limit of detection was calculated equal to 1.4×10^-9 M (S/N). An interestingly low RSD equal to 1.2% was found for 4 separate determinations by the proposed sensor. The sensor was applied for PMZ in-situ determination in plasma samples without applying any sample pretreatment. https://www.abechem.com/article_43508_2863298e1c75172824d2f5aa7517c899.pdf