RSS 1.0Departamento de Química Analítica
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Synthesis, thermal behavior in oxidative and pyrolysis conditions, spectroscopic and DFT studies of some alkaline earth metals p-aminobenzoate complexes using TG-DTA, DSC, PXRD and EGA (TG-FTIR) techniques
; ; Isquibola, Guilherme
; ; ; Caires, Flávio J. ; Ionashiro, Massao (Thermochimica Acta, 2022) [Artigo]
p-aminobenzoic acid is a substance widely used in several areas, such as catalysis, biomarkers, magnetic materials, luminescent materials and biological applications. p-aminobenzoate complexes with alkaline earth metal ... -
Surface facet Fe2O3-based visible light photocatalytic activation of persulfate for the removal of RR120 dye: nonlinear modeling and optimization
Khan, Saad U.; ; ; Torquato, Lilian D. M. ; Khan, Sabir ; ; Oliveira, Danielle P. ; Dorta, Daniel J. ; Perini, João A. Lima ; et al. (Environmental Science and Pollution Research, 2022) [Artigo]
Photocatalytic activation of persulfate (PS) is recently emerged as an energy-efficient and environmentally sustainable approach for pollutants degradation, which enables to leverage the strengths of low-cost solar energy ... -
Correction to: A new approach on synergistic effect and chemical stability of graphene oxide-magnetic nanocomposite in the heterogeneous Fenton degradation of caffeine (Environmental Science and Pollution Research, (2021), 28, 39, (55014-55028), 10.1007/s11356-021-14714-8)
Ramirez-Ubillus, Manuel Alejandro; de Melo Costa-Serge, Nayara ; Hammer, Peter ; Nogueira, Raquel Fernandes Pupo (Environmental Science and Pollution Research, 2022) [Errata]
The original publication contains the incorrect Supplementary materials. The correct Supplementary materials is shown in this paper. -
Analytical methods applied for ozone gas detection: A review
; ; ; ; Cardoso, Arnaldo A. (TrAC - Trends in Analytical Chemistry, 2022) [Resenha]
Ground-level ozone has been increasing worldwide, mainly due to the high anthropogenic emissions of NOx and VOCs. In addition, ozone generators are sold as water and air purifiers, and are also used to assist in decontaminating ... -
Measuring concentrations of a dye in the hemolymph of a marine amphipod: Development of a protocol for exposure assessment
; ; ; ; Silva, Bianca Ferreira da; Zanoni, Maria Valnice Boldrin ; (Marine Pollution Bulletin, 2022) [Artigo]
The increasing pollution of aquatic environments due to old and emerging contaminants requires the development of integrative methods for exposure assessment. Internal concentrations are a reliable way to estimate total ... -
Sample preparation and antibiotic quantification in vinasse generated from sugarcane ethanol fuel production
da Silva, Josiel José; da Silva, Bianca Ferreira ; Zanoni, Maria Valnice Boldrin ; Stradiotto, Nelson Ramos (Journal of Chromatography A, 2022) [Artigo]
Vinasse - liquid organic residue derived from the production of sugarcane ethanol fuel, has been applied as soil amendment via fertigation for decades in Brazil. This organic residue is an important source of nutrients and ... -
All-solution processed CuGaS2-based photoelectrodes for CO2 reduction
; ; Zanoni, Maria Valnice Boldrin; (Journal of CO2 Utilization, 2022) [Artigo]
Considering the influence of carbon dioxide (CO2) on global warming, an all-solution approach is presented here to fabricate nanocrystalline film of the ternary chalcopyrite for the photoelectrochemical CO2 reduction. ... -
Forest Fires in the Brazilian Amazon and their Effects on Particulate Matter Concentration, Size Distribution, and Chemical Composition
Costa, Maria Angélica M; ; ; Cardoso, Arnaldo A. ; ; Souza, Michele L. ; (Combustion Science and Technology, 2022) [Artigo]
The number of fires in the Brazilian Amazon rainforest has increased in recent years. Particulate matter emitted from these fires can affect different locations, depending on air mass trajectories. Characterization of such ... -
Effect of ionic liquid in a pressurized reactor to enhance CO2 photocatalytic reduction at TiO2 modified by gold nanoparticles
Perini, João Angelo Lima; Irikura, Kallyni ; Torquato, Lilian D. Moura ; Flor, Jader Barbosa da S. ; Zanoni, Maria V. Boldrin (Journal of Catalysis, 2022) [Artigo]
This work describes the synergic effect of gold nanoparticles as co-catalyst on TiO2 nanotubes (TNT/AuNP) in aqueous medium containing the ionic liquid (IL) 1-Butyl-3-methylimidazolium tetrafluoroborate, in a pressurized ... -
Effect of edible onion (Allium cepa L.) film on quality, sensory properties and shelf life of beef burger patties
; ; ; ; Ribeiro, Clóvis Augusto; ; ; ; ; (Molecules, 2021) [Artigo]
The production of edible film from onion (Allium cepa L.) to be applied as packaging is attractive, due to its chemical properties and biodegradable characteristics. Thus, we tested the hypothesis that edible onion film ... -
Development of a selective molecularly imprinted polymer for troponin T detection: a theoretical-experimental approach
Neres, Lucas Chagas Silva; Feliciano, Gustavo Troiano ; ; Sotomayor, Maria Del Pilar Taboada (Materials Today Communications, 2022) [Artigo]
The present work reports the synthesis and optimization of a molecularly imprinted polymer (MIP) for the selective recognition of troponin T. Troponin T is a cardiac protein found to be responsible for contraction and ... -
Simultaneous detection of hesperidin and narirutin in residual water using nanoporous platinum electrosynthesized by alloying-dealloying mechanism
Azevedo Beluomini, Maísa; Ramos Stradiotto, Nelson ; Boldrin Zanoni, Maria Valnice (Journal of Electroanalytical Chemistry, 2022) [Artigo]
This paper reports the versatile preparation of three-dimensional nanostructured porous platinum (3DnpPt) directly on the surface of a screen-printed electrode via a simple electrochemical method and its application for ... -
Modification of a Brazilian natural clay and catalytic activity in heterogeneous photo-Fenton process
Rojas-Mantilla, Hernán D.; Ayala-Duran, Saidy C. ; Pupo Nogueira, Raquel F. (Chemosphere, 2022) [Artigo]
The catalytic activity of a Brazilian natural clay modified with the immobilization of iron oxide was applied in the heterogeneous Fenton process for the degradation of the antibiotic sulfathiazole (STZ). The clay without ... -
Advances in photoelectroreduction of CO2 to hydrocarbons fuels: Contributions of functional materials
Brito, Juliana Ferreira de; ; Perini, João Angelo Lima ; Torquato, Lilian Danielle de Moura ; Zanoni, Maria Valnice Boldrin (Journal of CO2 Utilization, 2022) [Resenha]
The unbalanced concentration of CO2 in the atmosphere has received great attention due to severe effects on the planet. However, as human progress is still growing exponentially, CO2 emissions continue to be a major concern ... -
Kinetic evaluation of the dehydration of Yb(III) Lu(III) and Y(III) 4-chlorobenzylidenepyruvate by thermogravimetry (TG)
; ; Ionashiro, M. (Ecletica Quimica, 2006) [Artigo]
The dehydration kinetic of Yb, Lu and Y 4-chlorobenzylidenepyruvate was studied by using thermogravimetry and the kinetics parameters obtained by Flynn and Wall method suggest that the dehydration step follows a first order ... -
Thermoanalytical study of purine derivatives compounds
; ; ; Bannach, G.; Ionashiro, M. (Ecletica Quimica, 2004) [Artigo]
Thermal methods of analysis are now used in a very large range of scientific investigations. In this work simultaneous thermogravimetry-differential thermal analysis (TG-DTA), X-Ray powder diffractometry and infrared ... -
Thermal stability and thermal decomposition of sucralose
Bannach, Gilbert; ; ; ; Ionashiro, Massao (Ecletica Quimica, 2009) [Artigo]
Several papers have been described on the thermal stability of the sweetener, C12H19Cl3O8 (Sucralose). Nevertheless no study using thermoanalytical techniques was found in the literature. Simultaneous thermogravimetry and ... -
Photo-fenton process for treating biological laboratory wastewater containing formaldehyde
Fonseca, Janaína Conrado L.; Pupo Nogueira, Raquel F. ; Marchi, Mary Rosa Rodrigues (Ecletica Quimica, 2010) [Artigo]
Laboratories consume great amounts of hazardous chemicals substances and consequently generate wastewater containing them, for example formaldehyde. This substance is widely utilized to preserve biological samples generating ... -
Determination of copper at wide range concentrations using instrumental features of high-resolution continuum source flame atomic absorption spectrometry
Lima, Renata Toledo; Raposo, Jorge Luiz ; Virgílio, Alex ; Neto, José Anchieta Gomes (Ecletica Quimica, 2010) [Resenha]
This work describes a method to determine Cu at wide range concentrations in a single run without need of further dilutions employing high-resolution continuum source flame atomic absorption spectrometry. Different atomic ... -
Study of the thermal behavior in solid state of Mn(II)-diclofenac complex
; ; de Almeida, Adélia Emília; Ribeiro, Clóvis Augusto ; Crespi, Marisa Spirandeli (Ecletica Quimica, 2018) [Artigo]
The preparation, characterization and thermal behavio of Mn(II)-diclofenac solid-state complex was investigated b simultaneous TG/DTA and DTG curves, DSC, X-ray powde diffraction (XRD) and scanning electron microscopy (SEM ...