A5021622689- Nanoparticles: synthesis and applications
- Microplastics and Plastic Pollution
- Insect and Pesticide Research
- Environmental Toxicology and Ecotoxicology
- Pharmaceutical and Antibiotic Environmental Impacts
- Insect and Arachnid Ecology and Behavior
- Pesticide and Herbicide Environmental Studies
- Insect-Plant Interactions and Control
- biodegradable polymer synthesis and properties
- Plant and animal studies
- Water Quality and Pollution Assessment
- bioluminescence and chemiluminescence research
- Recycling and Waste Management Techniques
- Aquatic Ecosystems and Phytoplankton Dynamics
- Engineering Education and Curriculum Development
- Gold and Silver Nanoparticles Synthesis and Applications
- Heavy metals in environment
- Coastal and Marine Management
- Biosensors and Analytical Detection
- Mechatronics Education and Applications
- Advanced biosensing and bioanalysis techniques
- Bee Products Chemical Analysis
- Electrochemical Analysis and Applications
- Management and Organizational Practices
- Online and Blended Learning
University of Aveiro
2011-2024
Universidade Federal do Tocantins
2022-2023
As the production of zinc oxide nanoparticles (ZnO-NPs) and other metal oxides is exponentially increasing, it important to investigate potential environmental health impacts such nanoparticles. Nanoparticles' properties (e.g., size, dissolution rate) may change in different water media, their characterization essential derive conclusions about toxicity results. Therefore, an aquatic model organism, Daphnia magna, was used effect ZnO-NPs with 2 particle sizes (30 nm 80-100 nm) then compare...
Whether intentionally manufactured or resulting from fragmentation of larger plastic debris, micro-sized fragments (<5 mm), commonly referred to as microplastics, are ubiquitous in the environment. Therefore, correctly ascertaining their prevalence, order accurately estimate environmental, ecotoxicological and health impacts, is utmost importance. However, simple, straightforward efficient methods for routine monitoring remain scarce. In this scenario, staining techniques, following adequate...
Complex mixtures makes the assessment of environmental hazards difficult due to possible antagonistic or synergistic interactions that can occur between chemicals, even more complex effect patterns like dose-level dose-ratio-dependent responses. The aim present work was investigate acute and sublethal responses Daphnia magna Straus exposed four single chemical compounds (imidacloprid, thiacloprid, nickel chloride, chlorpyrifos) three binary mixtures. In immobilization feeding inhibition...
Raphidocelis subcapitata is a freshwater algae species that constitutes the basis of many aquatic trophic chains. In this study, R. was used as model to investigate kinetics uptake and elimination silver nanoparticles (AgNP) in comparison nitrate (AgNO3) with particular focus on Ag sized-fractions solution. AgNP study were provided suspension 1 mg Ag/l, an initial size 3–8 nm coated alkane material. Algae exposed for 48 h both AgNO3 sampled at different time points determine their internal...
Imidacloprid (IMI) belongs to the group of first generation neonicotinoids, known for their toxic effects non-target invertebrate species. Neonicotinoids have a specific mode action that mimics acetylcholine, impairing cholinergic neurotransmission, ultimately affecting survival organisms. This research aimed determine commercial formulation based on IMI survival, and life traits parameters larvae parental (P) F1 generations insect Chironomus xanthus. C. xanthus is bioindicator species...
The application of nanoparticles (NPs) in consumer products has been increasing over the past few years. Their release into environment is likely to happen at any stage production or during use containing NPs. Zinc oxide NPs (ZnO-NP) are among most-used on market due its intrinsic properties, such as ultraviolet (UV) absorption. aim present study was assess combined effects ZnO-NP and UV radiation 2 freshwater species: Daphnia magna Danio rerio. initial hypothesis that presence aquatic media...
Thiamethoxam (TMX) is a systemic neonicotinoid that acts as partial agonist of the nicotinic acetylcholine receptors (nAChRs). However, target species have shown resistance to formulations based on such neonicotinoids, which can also be expected for non-target insects. This research aimed study effects formulation TMX [Cruiser® 350 FS (CRZ)] life traits Chironomus xanthus filial generation (F1) and compare it with parental (P). Environmentally relevant concentrations CRZ significantly...
Neonicotinoid pesticides are one of the most commercialized groups worldwide. Their application in agriculture aims to control pests through a systemic mode action which is not specific target species. Our study aimed evaluate effects insecticide Actara® [active ingredient thiamethoxam (TMX)] on non-target species, Girardia tigrina. Therefore, acute and sublethal endpoints, such as mortality, feeding activity, locomotion behavioral biomarkers were assessed. exerted low toxicity towards...
Clothianidin (CLO) is an insecticide belonging to the second-generation class of neonicotinoids. In this study, we evaluated how CLO affects survival and complete life cycle tropical insect Chironomus xanthus, a non-target species, considering Parental (P) Filial (F1) generations. We found 48 h-lethal concentration (LC50) 3.78 µg/L. The lowest observed effect concentrations (LOECs) were: i) for body growth head capsule width in P generation = 47.3 ng/L CLO; ii) F1 larvae 80 36.4 CLO,...