A5026814117- Heavy metals in environment
- Water Quality and Pollution Assessment
- Mercury impact and mitigation studies
- Isotope Analysis in Ecology
- Thermochemical Biomass Conversion Processes
- Biofuel production and bioconversion
- Lignin and Wood Chemistry
- Environmental Toxicology and Ecotoxicology
- Growth and nutrition in plants
- Adsorption and biosorption for pollutant removal
- Geochemistry and Elemental Analysis
- Coal and Its By-products
- Marine and coastal ecosystems
- Soil Carbon and Nitrogen Dynamics
- Soil Management and Crop Yield
- Biodiesel Production and Applications
- Phosphorus and nutrient management
- Clay minerals and soil interactions
- Toxic Organic Pollutants Impact
- Analytical chemistry methods development
- Water Quality Monitoring and Analysis
- Chromium effects and bioremediation
- Geochemistry and Geologic Mapping
- Microbial bioremediation and biosurfactants
- Microplastics and Plastic Pollution
Universidade Estadual Paulista (Unesp)
2015-2024
Faculdade de Medicina de São José do Rio Preto
2018-2024
Universidade Federal do Ceará
2019
Fundação de Estudos e Pesquisas Aquáticas
2018
Brazilian National Association of Graduate Programs in Communication
2018
Dirección de Investigación y Desarrollo
2018
Universidade de São Paulo
2013-2015
Universidade Estadual de Campinas (UNICAMP)
2003-2005
University of Buenos Aires
2005
BEHAVIOR OF METHYLMERCURY IN THE ENVIRONMENT.Methylmercury is the most hazardous mercury species known.Due to its high stability, lipid solubility, and ionic properties, this compound shows a ability cross membranes in living organisms, damaging central nervous system, mainly brain, effects of chronic poisoning are progressive.In paper some aspects related toxicity cases methylmercury described.Other behavior environmental factors that influence transformation water sediment, with emphasis...
Mercury (II) adsorption studies in top soils (top 10 cm) from the Rio Negro basin show this process depends strongly on some selected parameters of aqueous phase contact with soils. Maximum occurred pH range 3.0-5.0 (>90%). Dissolved organic matter shows an inhibitory effect availability Hg to be adsorbed by soils, whereas a higher chloride content solution resulted lower at 5.0. Soils were less affected changes salinity. An increase initial concentration increased amount soil and decreased...
PERSISTENT TOXIC SUBSTANCES (PTS) IN BRAZIL.The present article presents an assessment of PTS in Brazil including polychlorinated biphenyls, polycyclic aromatic hydrocarbons, benzene hexachloride, aldrin, dieldrin, endrin, p,p , -DDT, DDE, -DDD, hexachlorocyclohexanes (α-HCH, β-HCH, γ-HCH and δ-HCH), endossulfan, heptachlor pentachlorophenol.The data presented here are related to a survey levels different environmental matrixes (soil, sediment, water, air, biota) human tissues (milk, blood,...
Abstract Background Hydrothermal carbonization (HTC) is a thermochemical process to convert biomass in carbon-rich materials (hydrochar). The use of sugarcane industry by-products HTC has been evaluated, generating hydrochar rich nutrients, which could be used as soil conditioner. We raised the hypothesis that application can improve its nutrient characteristics, bringing better environment and favouring plant growth, expecting development similar one observed anthropogenic soils. Results...
Despite the low level of industrial activity and human density, Hg concentration in Negro River basin is relatively high. Soil enriched with naturally high concentrations atmospheric deposition are main sources metal this watershed. Differences between invasive evasive fluxes at water/air soil/air interfaces indicate accumulation a rate 39.9 t y-1. The type soil, which source mercury for water bodies, hydrological cycle floods dry periods, act markedly on redox chemistry. A complex...
Fulvic acids (FA) are one of the components humic substances and play an important role in interaction with metallic species and, consequently, bioavailability, distribution toxicity metals. However, only a few studies have investigated these FA properties specific environment, such as anthropogenic soils. Therefore, knowledge about molecular composition well FA-metal is essential to predict their behavior soil. For this reason, aim study was investigate extracted from two sites soil (Terra...
Hydrochar is a carbon-based material that can be used as soil amendment. Since the physical-chemical properties of hydrochar are mainly assigned to process parameters, we aimed at evaluating organic fraction different hydrochars through 13C-NMR and off-line TMAH-GC/MS. Four produced with sugarcane bagasse, vinasse sulfuric or phosphoric acids were analyzed elucidate main molecular features. Germination initial growth maize seedlings assessed using water-soluble evaluate their potential use...
Total (HgT), reactive (HgR) and organic (HgORG) mercury species have been quantified in non-filtered waters collected from the Negro River Basin, Amazon (from January/2002 through January/2004), both black white water bodies. Black presented highest HgT, HgORG HgR concentration (29.1 ng L-1, 1.63 L-1 3.9 respectively), while, lowest (8.8 0.49 1.2 respectively). An inverse correlation between HgT level over basin was obtained, although has increased first rainy months then decreased as rose....