Article
Chemistry, Physical
Izabela Bargiel, Joanna Smajdor, Anna Gorska, Beata Paczosa-Bator, Robert Piech
Summary: The newly developed voltametric method for highly sensitive propranolol determination showed good linearity and detection limit in experiments, high recovery rates in real samples, and good signal repeatability.
Article
Electrochemistry
Kelline Alaide Pereira Sousa, Franciele de Matos Morawski, Carlos Eduardo Maduro de Campos, Renato Luis Tamme Parreira, Mauricio Jeomar Piotrowski, Glaucio Regis Nagurniak, Cristiane Luisa Jost
Summary: Theoretical and electrochemical behavior of the herbicide fluometuron was investigated using a glassy carbon electrode for the first time. The study found that fluometuron exhibited an irreversible profile with a well-defined anodic peak through cyclic voltammetry. The presence of defects on the electrode surface induced the dissociation and adsorption of fluometuron, affecting the electroanalysis. Differential pulse voltammetry was successfully employed for the determination of fluometuron under optimized conditions.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Natalia Festinger, Sylwia Smarzewska, Valentin Mirceski, Witold Ciesielski
Summary: A simple and sensitive square wave voltammetric procedure was developed for the determination of acemetacin (ACM) at graphite flake paste electrode (GFPE) and glassy carbon electrode (GCE). The method showed wide linear range for ACM concentration and was successfully applied for ACM determination in pharmaceuticals and spiked urine with satisfying recoveries. The electrochemical oxidation of ACM was found to be an irreversible process controlled by mixed nature of the mass transfer process.
Article
Chemistry, Inorganic & Nuclear
Rukaya Banu, B. E. Kumara Swamy, Eno Ebenso
Summary: This study presents a simplified and efficient method for quantifying serotonin and epinephrine using a customised glassy carbon electrode. The developed sensor effectively accelerates the electrocatalytic current response and shows good selectivity and sensitivity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Agricultural Engineering
Cecilia Naveira-Pazos, Maria C. Veiga, Christian Kennes
Summary: This study demonstrates that a mixture of VFAs obtained from acetogenic bacteria can be used in aerobic fermentation with Yarrowia lipolytica to produce lipids as precursors for biodiesel. Acetic acid is the preferred substrate for Yarrowia lipolytica, with a high consumption rate for lipid production.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Kai Wang, Yangyang Da, Haoran Bi, Yanhui Liu, Biqiang Chen, Meng Wang, Zihe Liu, Jens Nielsen, Tianwei Tan
Summary: By improving the formate utilization capability and NAD(P)H production of a yeast strain, a platform strain for the synthesis of free fatty acids (FFAs) from CO2 and formate was successfully constructed. Continuous optimization resulted in a 21.8-fold increase in formate utilization rate and a 33.7-fold increase in FFA production. The FFAs produced can be easily converted into biodiesel through downstream technologies.
Article
Electrochemistry
Mohammed A. Kassem, Wejdan M. Al-Zahrani, Zahrah T. Althagafi, Gharam I. Mohammed, Mohamed I. Awad
Summary: Electrochemical oxidation of a glassy carbon electrode enables the detection of flutamide. The oxidation process is simple and efficient, and involves applying a potential to the electrode. Optimized experimental parameters led to a linear relationship between the electrode response and the concentration of flutamide, with a relative standard deviation of 4.2%.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Chemistry, Analytical
Negar Mohammadi, Manochehr Bahmaei, Amirabdolah Mehrdad Sharif
Summary: In this study, simultaneous electrochemical measurement of Acetaminophen, Tyrosine, and Codeine was discussed for the first time. A CuZnO-Fe3O4/rGO nanocomposite was prepared and successfully applied for the amendment of a glassy carbon electrode surface. The sensor demonstrated good performance in monitoring analytes in urine and human blood plasma, showing good agreement with results obtained using the HPLC method.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Ghadeer A. R. Y. Suaifan, Mohammad F. Khanfar, Mayadah B. Shehadeh, Asmaa Alnajajrah, Raghad Abuhamdan, Sameer Ahmad Hasan
Summary: This study successfully developed an electroanalytical electrode for the detection of albendazole (ABZ) active ingredient in pharmaceutical dosage form and contaminated animal-derived products. The modified electrode demonstrated high sensitivity and applicability, making it suitable for quality control in the pharmaceutical and food industry.
Article
Chemistry, Physical
Joanna Wasag, Malgorzata Grabarczyk
Summary: A copper film modified glassy carbon electrode and a novel copper film with carbon nanotubes modified screen-printed electrode were used for anodic stripping voltammetric measurement of ultratrace levels of Cd(II). The optimal electroanalytical performance of the working electrodes was achieved in electrolyte 0.1 M HCl and 2 x 10(-4) M Cu(II), with detection limits and repeatability values established for both types of electrodes. The calibration curves showed linear ranges for trace determination of cadmium in different environmental water samples.
Article
Environmental Sciences
Mohammad Reza Hojatpanah, Akbar Khanmohammadi, Hosin Khoshsafar, Ali Hajian, Hasan Bagheri
Summary: In this study, a novel electrochemical sensor modified with ion-imprinted polymers was developed for the determination of uranyl ions. The modified electrode exhibited excellent selectivity and sensitivity, as demonstrated by experimental and characterization analyses. The sensor showed promising potential for practical applications in real samples.
Article
Biochemistry & Molecular Biology
Juliana Costa Rolim Galvao, Mayara da Silva Araujo, Maiyara Carolyne Prete, Vanildo Leao Neto, Luiz Henrique Dall'Antonia, Roberto Matos, Cesar Ricardo Texeira Tarley, Roberta Antigo Medeiros
Summary: A novel electrochemical assay for determining 17-beta-estradiol (E2) was proposed in this study. By modifying a glassy carbon electrode (GCE) with a nanocomposite consisting of alpha-Fe2O3 nanoparticles supported on carbon nanotubes (CNTs), the detection of E2 was enhanced and electrode surface fouling was prevented. The optimized experimental conditions allowed for accurate and fast determination of E2 in a wide concentration range.
Article
Chemistry, Analytical
Debora A. R. Moreira, Dilton M. Pimentel, Mariane O. B. Arrieiro, Sandro L. Barbosa, Rodrigo A. B. da Silva, Wallans T. P. dos Santos
Summary: This study reports the voltammetric behavior and determination of clonidine (CLO) using an unmodified glassy carbon electrode (GCE) for the first time. CLO exhibited only an irreversible oxidation process on the GCE at pH 12 (vs Ag/AgCl). The determination of CLO was optimized in 0.1 mol L-1 phosphate buffer solution at pH 12.0 using differential pulse voltammetry (DPV), providing a good linear range and low limit of detection for quality control of this drug in pharmaceutical samples. The proposed GCE-DPV method demonstrated good accuracy and analytical performance for CLO determination in pharmaceutical samples, offering a faster, simpler, and lower-cost alternative for quality control compared to other methods.
Article
Chemistry, Multidisciplinary
Dimitrios Zagoraios, Charis Ioakeimidis, Georgios Kyriakou, Alexandros Katsaounis
Summary: An inexpensive and practical method was explored to detect phenolic compounds in wastewater using a simple one compartment three-electrode cell and cyclic voltammetry measurements. The electrooxidation current density value correlated linearly with the concentration of each phenolic compound, but only qualitative analysis was possible for a 1:1 mixture of these phenols.
APPLIED SCIENCES-BASEL
(2021)
Article
Electrochemistry
Funmilola A. Adesanya, Omolola E. Fayemi
Summary: This study explores the application of a nanocomposite-modified glassy carbon electrode for the determination of anthracene. The results show that the modified electrode has excellent electrocatalytic activity and sensitivity, making it suitable for the quantitation of anthracene in wastewater.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Environmental Sciences
Luiz R. G. Silva, Jose G. A. Rodrigues, Juliana P. Franco, Layla P. Santos, Eliane D'Elia, Wanderson Roma, Rafael de Q. Ferreira
Summary: A fast, sensitive, inexpensive, and portable method was developed for determining ethinylestradiol in urine and struvite, using square wave voltammetry and screen-printed carbon electrodes modified with electrodeposited nickel film. The method showed high precision and accuracy in detecting ethinylestradiol in various samples without significant matrix effects or interference from other drugs. This method has the potential to be applied on-site in a practical and fast manner, requiring small amounts of sample.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Multidisciplinary Sciences
Bruna Teixeira da Fonseca, Eliane D'Elia, Jose Marcio Siqueira Junior, Sanair Massafra de Oliveira, Kelly Leite dos Santos Castro, Emerson Schwingel Ribeiro
Summary: The SiO2/TiO2/Nb2O5 material was characterized by various techniques, showing an enhancement of crystalline order with the increase of thermal treatment temperature, successful insertion of Ti and Nb atoms into the silica matrix, and high dispersion of metals on the materials surface confirmed by different analyses.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Chemical
Aparecida Cristina Mauro, Bernardo Dias Ribeiro, Rafael Garrett, Ricardo Moreira Borges, Talis Uelisson da Silva, Sergio de Paula Machado, Joyce Rodrigues de Araujo, Sanair de Oliveira Massafra, Francisco Odencio Rodrigues de Oliveira Junior, Eliane D'Elia
Summary: The aqueous extract of Joazeiro stem bark and its high molecular weight fraction were examined as potential corrosion inhibitors for mild steel in hydrochloric acid media. The results showed an increase in anticorrosive efficiency with varying inhibitor concentration. Chemical characterization, electron microscopy, and quantum chemical calculations were used to analyze the composition and inhibitory action of the extract.
Article
Engineering, Chemical
Victor Magno Paiva, Kelly Leite dos Santos Castro Assis, Braulio Soares Archanjo, Daniela Ramos Ferreira, Carlos Alberto Senna, Emerson Schwingel Ribeiro, Carlos Alberto Achete, Eliane D'Elia
Summary: Glycerol, a major byproduct in biodiesel production, can impact engine performance, emphasizing the importance of fuel quality control. A modified electrode based on glassy carbon showed excellent performance in analyzing glycerol in biodiesel, offering a fast, sensitive, and low-cost alternative method.
Article
Chemistry, Physical
Francisco Alexandre de Sousa Rodrigues, Yan Marques Henriques Goncalves, Bruno Araujo Cautiero Horta, Iara da Silva Santos, Barbara Silva, Eliane D'Elia
Summary: The research investigated three isonitrosoacetanilide compounds as mild steel corrosion inhibitors, with results showing that the presence of bromine and methoxy groups enhanced the inhibitory properties. Experimental and computational methods confirmed that the adsorption process is of the physical type.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Luiz R. G. Silva, Jose G. A. Rodrigues, Maria de L. S. Vasconcellos, Emerson S. Ribeiro, Eliane D'Elia, Rafael de Q. Ferreira
Summary: The increasing presence of drugs in the environment has raised concerns, and finding simple, fast, low-cost, and environmentally friendly methods to control and monitor these drugs is important for preserving the environment and human health. This study proposes a simultaneous electroanalytical quantification method for two widely consumed drugs of different classes in environmental and biological samples using a commercial disposable boron-doped diamond electrochemical sensor and portable equipment. The method shows high sensitivity and recovery rates.
Article
Chemistry, Analytical
Raisa Rodrigues Gioia, Julia Oliveira Fernandes, Cassiano Augusto Rolim Bernardino, Claudio Fernando Mahler, Bernardo Ferreira Braz, Claudio Sabbatini Capella Lopes, Braulio Soares Archanjo, Emerson Schwingel Ribeiro, Eliane D'Elia, Ricardo Erthal Santelli, Fernando Henrique Cincotto
Summary: In this study, an electrochemical sensor based on glassy carbon, mixed oxide, and carbon black was developed for the determination of thiamethoxam in raw honey and water. The sensor exhibited good morphological structure and electrochemical performance, allowing efficient and accurate quantification of thiamethoxam.
Article
Materials Science, Multidisciplinary
Jessica Nogueira da Cunha, Brenno Danho Veras Evangelista, Amanda Vieira Xavier, Talis Uelisson da Silva, Sanair Massafra de Oliveira, Joyce Rodrigues de Araujo, Braulio Soares Archanjo, Sergio de Paula Machado, Michelle Jakeline Cunha Rezende, Tatiana das Chagas Almeida, Oscar Rosa Mattos, Eliane 'Elia
Summary: The anticorrosive activity of furfural derivatives on mild steel immersed in CO2-saturated formation water solution was evaluated. Furfural thio-semicarbazone showed high inhibition efficiency of 90.2% for 72 hours of immersion. In-situ synthesis of the same molecule in the corrosive medium also demonstrated good efficiency of 82.2% for 24 hours of immersion, but it decreased over time due to incomplete conversion of the precursors.
Article
Materials Science, Multidisciplinary
Tatiana C. Almeida, Jessica N. Cunha, Eliane D'Elia, Oscar Rosa Mattos
Summary: This article critically evaluates the literature on the use of the Langmuir isotherm in inhibitor research. The validity of the Langmuir isotherm has been challenged, particularly by Walczak et al. (2019), leading to its rejection by some researchers. Imposing limitations on the Langmuir isotherm would affect heterogeneous kinetics, impedance interpretation, and other transient techniques. This discussion paper provides a more in-depth analysis of these aspects.
Article
Chemistry, Multidisciplinary
Klicia Carla de Santana de Lima, Victor Magno Paiva, Marcos Gustavo Araujo Schwarz, Nathalia Martins Bomfim Barreto, Daniel Perrone, Eliane D'Elia
Summary: This research examined the corrosion inhibition effect of three extracts from soybean meal and a soybean protein commercial sample on mild steel, using mass loss tests, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP). The soybean meal extracts' anti-corrosive properties were investigated by normalizing the peptide/protein amount. The inhibitors were characterized chemically and the surface of mild steel was studied by scanning electron microscopy (SEM). The results showed that all inhibitors showed the same inhibition efficiency when the normalization in peptide/protein amount was performed, indicating that proteins/peptides are responsible for inhibiting corrosion. For example, at 100 mg L-1 in protein content, the inhibition efficiency was 84% and 82% from EIS and PDP results, and 89% and 93-94% after 2 and 24 h immersion time, respectively, from mass loss measurements. Polarization curves indicated that all inhibitors behave as a mixed-type inhibitor, particularly for the cathodic branch. SEM results suggested that all extracts promoted a protective action against corrosion of the mild steel in H2SO4 solution.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Multidisciplinary
Paula M. A. Machado, Juliana M. Barreto, Ramon da S. Motta, Jose Guilherme A. Rodrigues, Wladmir F. de Souza, Igor A. V. Maldonado, Rafael Allao A. Cassaro, Gustavo R. C. dos Santos, Gabriel R. A. Carneiro, Henrique M. G. Pereira, Eliane D'Elia, Adolfo Horn, Elizabeth Roditi Lachter
Summary: A new dinuclear dioxidomolybdenum(vi) complex was synthesized and evaluated as a catalyst for the oxidation of sulfur compounds. The complex showed high conversion rates for thioanisole, diphenyl sulfide, and dibenzothiophene. Rating: 8/10
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Sanair Massafra De Oliveira, Kelly Leite dos Santos Castro Assis, Victor Magno Paiva, Mazdak Hashempour, Massimiliano Bestetti, Joyce R. De Araujo, Eliane D'Elia
Summary: Two electrochemical sensors based on modified glassy carbon electrodes with carbon nanostructures (graphene and carbon nanotubes) were used for efficient sensing and detection of morpholine. The introduction of graphene and carbon nanotubes enhanced the electrocatalytic activity of the electrodes towards morpholine electro-oxidation, leading to increased detection sensitivity.
BULLETIN OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Victor Magno Paiva, Kelly Leite dos Santos Castro Assis, Jose G. A. Rodrigues, Carlos Alberto Senna, Paula F. de Aguiar, Braulio Soares Archanjo, Emerson Schwingel Ribeiro, Carlos Alberto Achete, Eliane D'Elia
Summary: An electrochemical sensor based on a modified glassy carbon electrode with reduced graphene oxide and Ni-Au nanoparticles was developed for the determination of ethylene glycol. The modified electrode showed good performance with a linear range, correlation coefficient, detection and quantification limits, and stability. The characterization and analysis of the modified electrode were conducted using various techniques, confirming its effectiveness in ethylene glycol detection.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Viviane M. Teixeira, Gustavo A. de Oliveira, Michelle J. C. Rezende, Eliane D'Elia
Summary: The aqueous extract of cumaru seeds and its high molecular weight fraction showed efficient inhibition of mild steel corrosion in hydrochloric acid solution, characterized by physical adsorption, decreased double layer capacitance, and increased charge transfer resistance. The adsorption of molecules in the cumaru extract followed Langmuir isotherm.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Isabel da Silva Hernandes, Jessica Nogueira da Cunha, Carolina Araujo Santana, Jose Guilherme Aquino Rodrigues, Eliane D'Elia
Summary: The study showed that aqueous cotton seeds extract can be a good corrosion inhibitor for mild steel in HCl solution, with the high molecular weight fraction playing a crucial role in the inhibitive process. This suggests a potential application of cotton seed extract as a natural corrosion inhibitor.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2021)
