A5016324981- Analytical Chemistry and Chromatography
- Analytical chemistry methods development
- Effects and risks of endocrine disrupting chemicals
- Advanced oxidation water treatment
- Electrochemical sensors and biosensors
- Petroleum Processing and Analysis
- Enzyme-mediated dye degradation
- Mass Spectrometry Techniques and Applications
- Toxic Organic Pollutants Impact
- Electrospun Nanofibers in Biomedical Applications
- Hormonal and reproductive studies
- Microbial bioremediation and biosurfactants
- Innovative Microfluidic and Catalytic Techniques Innovation
- Chemical Analysis and Environmental Impact
- Pharmacological Effects and Assays
- Electrochemical Analysis and Applications
- Child Nutrition and Water Access
- Microencapsulation and Drying Processes
- Analytical Methods in Pharmaceuticals
- Polymer Surface Interaction Studies
- Analytical Chemistry and Sensors
- Water Quality Monitoring and Analysis
- Hydrogels: synthesis, properties, applications
- Microfluidic and Capillary Electrophoresis Applications
- Advanced Polymer Synthesis and Characterization
Universidade Federal do Paraná
2017-2024
Universidade Estadual de Campinas (UNICAMP)
2022-2024
Brazilian Biosciences National Laboratory
2023
A novel alginate based hydrogel was successfully prepared and tested for the solid phase microextraction of medium-to-high polarity compounds, when supported in a polypropylene (PP) fiber. Pure added onto surface PP fiber, resulted significant improvement extraction efficiency analytes (except β-estradiol). The modified upon incorporation small amount zein, corn protein. Interestingly, alginate/zein-supported capable extracting compounds with low partition constant (Kow), such as...
A new extraction phase based on hydrogel disks of polyvinyl alcohol (PVOH) and pectin was proposed, characterized evaluated for the six steroidal hormones (estriol, estrone, 17β-estradiol, 17α-ethinylestradiol, progesterone, testosterone) in aqueous samples with subsequent determination by gas chromatography-tandem mass spectrometry (GC-MS/MS) after derivatization procedure. The developed procedure solid (SPE) technique, but employed as sorbent phase. effects several parameters, including...
Abstract Smart microgels can be used as sorbents, possessing high surface area and rapid stimuli‐responsiveness. A series of poly( N ‐isopropylacrylamide) (pNIPAM) pNIPAM‐ co ‐starch nanoparticles (pNIPAM‐ ‐SNPs) thermo‐responsive were synthesized, presenting different hydrophilic/hydrophobic behavior according to the composition. The adsorption studies carried out for methylparaben (MPB), ethylparaben (EPB), propylparaben (PPB), butylparaben (BPB), bisphenol (BPA), extraction desorption...
Abstract Zein, a corn‐derived protein, has variety of applications ranging from drug delivery to tissue engineering and wound healing. This work aims develop biocompatible scaffold for dermal based on thermally annealed electrospun propolis‐loaded zein nanofibers. Pristine fibers' biocompatibility is determined in vitro. Next, propolis Melipona quadrifasciata added the fibers at different concentrations (5% 25%), scaffolds are studied. The physicochemical properties zein/propolis precursor...
In this work, it is reported the detailed evaluation of filtering scripts for comprehensive two-dimensional gas chromatography coupled with high-resolution mass spectrometry (GC×GC–HRMS). Automated were built to perform group-type analysis naphthenic acids (NAs) in complex mixtures, like produced water (PW) samples. The logical operations based on spectral information acquired by using electron ionization (EI) and chemical positive mode (PCI). most common derivatization methods carefully...
Hydrogels are smart-swelling 3D structures capable of incorporating/expelling water while maintaining their structures. When combined with electroactive materials, such as conducting polymers, the resulting composite may present tunable properties. Herein, preparation and characterization alginate-polypyrrole hydrogels is described using chemical polymerization to form polypyrrole inside around alginate beads, employing two simple protocols. These materials were qualitatively tested...
The pulp and paper industry is one of world’s largest water consumers, generating high volumes effluents. Kraft process produces effluents with BOD, COD, suspended solids, lignin a myriad potentially toxic compounds, which require treatment before discharge into the aquatic environment. Advanced oxidation processes, such as UV/H2O2, have been applied alternatives because they can destroy many compounds mineralize. However, when incomplete, occurs could be produced by products toxicity. This...