A5086552119- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Analytical chemistry methods development
- Analytical Chemistry and Sensors
- Advanced biosensing and bioanalysis techniques
- Conducting polymers and applications
- Adsorption and biosorption for pollutant removal
- Education during COVID-19 pandemic
- Analytical Chemistry and Chromatography
- E-Learning and Knowledge Management
- Covalent Organic Framework Applications
- Digestive system and related health
- Educational Innovations and Technology
- Biosensors and Analytical Detection
- Dye analysis and toxicity
- Agricultural and Food Sciences
- biodegradable polymer synthesis and properties
- Coffee research and impacts
- Extraction and Separation Processes
- Mass Spectrometry Techniques and Applications
- SARS-CoV-2 detection and testing
- Chemical Synthesis and Characterization
- Advanced Chemical Sensor Technologies
Instituto Federal de Educação Ciência e Tecnologia do Paraná
2017-2025
Instituto Federal de Educação, Ciência e Tecnologia do Pará
2020-2025
Universidade Estadual de Londrina
2013-2025
Abstract This paper describes the development of a new electrochemical sensor for 17β‐estradiol (E2) determination based on glassy carbon electrode (GCE) modified with molecularly imprinted polymer grafted onto iniferter‐multiwall nanotubes surface (MIP‐MWCNT) and dihexadecyl‐hydrogen‐phosphate (DHP). The method was closed‐circuit preconcentration E2 in 0.1 mol L −1 phosphate buffer (pH 7.0) during 500 s. Upon preconcentration, determined by differential pulse voltammetry (DPV) exhibiting...
No presente estudo, um novo material compósito (SiO 2 /TiO /ZnO) foi avaliado para pré-concentração de cobre em amostras água e alimentos.O sorvente caracterizado por microscopia eletrônica varredura (SEM), infravermelho com transformada Fourier (FT-IR), análise dados texturais, fluorescência raios X energia dispersiva (EDXRF) difratometria (XRD).A linha determinação espectrofotométrica na região visível baseada 20,0 mL amostra pH 7,0 através 50 mg do sorvente, numa vazão 6,4 min -1 .Um...
ACID MEDIUM.A simple and reliable voltammetric method is presented for the determination of amitriptyline using a boron-doped diamond electrode in 0.1 mol L -1 sulfuric acid solution as support electrolyte.Under optimized differential pulse voltammetry conditions (modulation time 5 ms, scan rate 70 mV s , amplitude 120 mV), provides linear responses to concentration range 1.05 92.60 µmol at detection limit 0.52 .The proposed was successfully applied pharmaceutical formulations, with results...
The present paper describes a new analytical method exploiting SiO2/WO3 mixed oxide as an adsorbent synthesized via sol-gel process for the preconcentration of Ni2+. This material was characterized by energy dispersive X-ray fluorescence spectroscopy, powder diffraction, Fourier transform infrared analysis specific surface area Brauner, Emmett and Telle multipoint method, average pore size volume Barrett-Joyner-Halenda scanning electron microscopy, spectroscopy. presented high (710.9 m2...
An SPE-based procedure for simultaneous preconcentration of tricyclic antidepressants was developed. Two organic polymers were used as adsorbent materials which showed high sensitivity.
In the present study an anodic stripping voltammetric method using a bismuth film modified carbon nanotubes paste electrode for simultaneous determination of metals Zn2+, Cd2+and Pb2+in ethanol fuel is described. The metallic ions were preconcentrated on in time and deposition potential 500 s -1.2 V step was carried out by square wave voltammetry (frequency 15 Hz, pulse amplitude 25 mV 5 mV). Acetate buffer at 0.1 mol L-1concentration pH 4.5 used as support electrolyte. showed linearity...
This study proposes the development of a new photoelectrochemical (PEC) sensor for determination dopamine (DA) at nanomolar levels. The PEC was based on physical mixture bismuth vanadate (BiVO4) with nanocomposite molecularly imprinted poly(acrylic acid) (MIP-AA) grafted onto MWCNTox by using surface controlled radical polymerization strategy an INIFERTER reagent. XRD, diffuse reflectance spectroscopy (DRE), SEM, TEM and TGA were employed to characterize materials. Photoelectrochemical...
Unexpectedly, social distancing became a rule, forcing schools and universities to introduce an emergency remote education. The information communication technologies (ICTs) are being used in many cases only as way of transmitting content, reducing its potential promote interaction between users, contextualization daily life, failing make the student protagonist their learning process. In this sense, knowing handling available tools is essential current moment Thus, order perform brief...