A5043310207- Microplastics and Plastic Pollution
- Recycling and Waste Management Techniques
- Marine Biology and Environmental Chemistry
- biodegradable polymer synthesis and properties
- Pharmaceutical and Antibiotic Environmental Impacts
- Ionic liquids properties and applications
- Phase Equilibria and Thermodynamics
- Conducting polymers and applications
- Nanoparticles: synthesis and applications
- Organic Electronics and Photovoltaics
- Analytical Chemistry and Sensors
- Material Dynamics and Properties
- Silicone and Siloxane Chemistry
- Chemical and Physical Properties in Aqueous Solutions
- Electrochemical Analysis and Applications
- Chemical Thermodynamics and Molecular Structure
- Polymer Nanocomposites and Properties
- Advanced Sensor and Energy Harvesting Materials
- Electrochemical sensors and biosensors
- Effects and risks of endocrine disrupting chemicals
- Organic Light-Emitting Diodes Research
- Classical Philosophy and Thought
- Thermodynamic properties of mixtures
Universidade de São Paulo
2022-2024
Instituto Butantan
2023-2024
Universidade Federal dos Vales do Jequitinhonha e Mucuri
2022
Artemis (United States)
2022
Universidade Federal de Juiz de Fora
2018-2022
National Council for Scientific and Technological Development
2022
Polystyrene (PS) is one of the main synthetic polymers produced around world, and it present in composition a wide variety single-use objects. When released into environment, these materials are degraded by environmental factors, resulting microplastics. We investigated ability
Extracting microplastics from sediment is critical in assessing pollution freshwater environments. However, this process can be particularly challenging for clayey sediments with a significant organic matter content. This study proposes simplified method extracting organic-rich and complete protocol processing. To evaluate the extraction method, calcined was artificially enriched varying content (20, 40, 60%). Known quantities of plastic particles distinct characteristics compositions (PET,...
Anthropogenic debris has been documented in Antarctica for the past 40 years. Upon breakdown, large pieces become microdebris, which reaches seafloor through a variety of physical and biological processes. The Antarctic benthos, deeply reliant on sinking organic particles, is thus vulnerable to ingesting microdebris. By using benthic specimens sampled between 1986 2016 deposited collections, we provide first record microdebris Southern Ocean deep-sea invertebrates. Specimens from 15 species...
Acrylonitrile-butadiene-styrene (ABS) is a thermoplastic copolymer commonly used in the electronics, automotive, and construction industries. In aquatic environment, formation of microplastics from larger-sized plastic waste occurs naturally, induced by physical, chemical, biological processes that promote aging these particles. Here, we investigated interactions between freshwater amphipod Hyalella azteca ABS (10–20 μm) (pristine after accelerated aging) over 7 days exposure. At end...
ABSTRACTFreshwater environments are especially susceptible to microplastic contamination due their proximity urbanised and industrial areas. Also, there is a lack of information about the effects this pollutant on freshwaters making it difficult conservation these environments. Benthic species, such as freshwater amphipod Hyalella azteca, have been superficially studied so far for evaluation pollution. In present study, we analyzed whether polyethylene terephthalate (PET) microplastics could...
The interaction of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) with Au or Ag nanospheres, nanostars, and nanoprisms was investigated using surface-enhanced Raman scattering (SERS). SERS investigation showed that adsorption MEH-PPV strongly depends on the nature nanoparticle surface. On gold nanostars present a thick layer capping polymer, spectrum is only observed in relatively concentrated solution (1 mmol L −1 ). other hand, nanospheres spectra down to 10 −6 mol no...
Microplastics are widespread pollutants in the environment and considered a global pollution problem. mostly originate from larger plastics due to environmental conditions undergoing constant fragmentation processes. It is important understand pathways, since they play key role fate of particles, also directly influence toxicity. Amphipods potential inducers plastic debris fragmentation. Here, Hyalella azteca was exposed different concentrations (540, 2700, 5400 items/L) 24.5 µm polystyrene...
The inherently high viscosity of ionic liquids (ILs) can limit their potential applications. One approach to address this drawback is modify the cation side chain with ether groups. Herein, we assessed structure–property relationship by focusing on acetate (OAc), a strongly coordinating anion, 1,3-dialkylimidazolium cations different chains, including alkyl, ether, and hydroxyl functionalized, as well combinations. We evaluated viscosity, thermal stabilities, microstructure using Raman...
This paper constitutes a presentation of work in progress at discussion session the conference Dense ionic fluids Faraday Discussion, 8-10 July 2024, London, and is published on pages 293-295 Ref. [Faraday Discuss. volume 253, page 289].
ABSTRACT Growing global concern surrounds microplastics, found in various environments. However, data on microplastics contamination salted shrimp and associated health risks remain scarce. We analyzed whether shrimps sold markets a main city Amazonas state (Brazil), are contaminated with microplastics. examined 150 specimens of Macrobrachium amazonicum 396 potential 129 individuals (86%). The number particles per gram body mass was highest the gastrointestinal tract, 60% them ranging size...
This article tells the story of proof known as reductio ad absurdum, through biographies Heraclitus, Parmenides and his disciple Zeno. Emphasis is placed on Zeno’s paradoxes some classic demonstrations modern mathematics, in which by absurdum used widely. In other words, we intend to discuss logical-mathematical history from birth logic Zeno ipso facto establish a relationship between mathematical logic. The method was bibliographic, referring mainly secondary sources due strictly...