A5023143210- Analytical chemistry methods development
- Heavy metals in environment
- Mercury impact and mitigation studies
- Heavy Metal Exposure and Toxicity
- Electrochemical Analysis and Applications
- Mass Spectrometry Techniques and Applications
- Pesticide Residue Analysis and Safety
- Environmental Toxicology and Ecotoxicology
- Trace Elements in Health
- Aluminum toxicity and tolerance in plants and animals
- Ion-surface interactions and analysis
- Plant Stress Responses and Tolerance
- Radioactive element chemistry and processing
- Heavy Metals in Plants
- Plant Micronutrient Interactions and Effects
- Arsenic contamination and mitigation
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Water Quality Monitoring and Analysis
- Geochemistry and Elemental Analysis
- Aquaculture Nutrition and Growth
- Water Quality and Pollution Assessment
- Physiological and biochemical adaptations
- Erythrocyte Function and Pathophysiology
- Lipid Membrane Structure and Behavior
Universidade Federal de Santa Maria
2016-2025
Arizona State University
2021
Universidade Federal de Santa Catarina
1998-2021
Laboratório Nacional de Ciência e Tecnologia do Bioetanol
2010-2012
Universidade Federal do Rio Grande do Sul
2008
Westfälische Hochschule
1983-1984
RWTH Aachen University
1984
In aquatic environments, heavy metals are produced from natural and anthropogenic sources the degree of contamination in fish tissues depend on pollutant type, species, sampling site, trophic level, their mode feeding. The metal concentration (Al, As, Cd, Co, Cr, Cu, Fe, Mn, Zn, Pb) water, sediment, liver two species (Oligosarcus spp. – carnivore Chyphocarax voga detritivore) was analyzed at sites Sinos River, Brazil, during four seasons. highest observed followed by lowest fish. As sediment...
Laser ablation inductively coupled plasma mass spectrometry has been proven to be useful in life sciences as can observed by the increasing number of publications this field.
Ultrasound-assisted oxidative desulfurization (UAOD) process was applied to diesel oil and petroleum product feedstock containing model sulfur compounds (benzothiophene, dibenzothiophene dimethyldibenzothiophene). The influence of oxidant amount, volume solvent for the extraction step time temperature ultrasound treatment (20 kHz, 750 W, operating at 40%) investigated. Using optimized conditions UAOD, removal up 99% achieved in using a molar proportion H2O2:acetic acid:sulfur 64:300:1, after...
The present study investigated the effect of administration N-acetylcysteine (NAC), on memory, acetylcholinesterase (AChE) activity and lipid peroxidation in different brain structures cadmium (Cd)-exposed rats. rats received Cd (2 mg/kg) NAC (150 by gavage every other day for 30 days. animals were divided into four groups (n = 12–13): control/saline, NAC, Cd, Cd/NAC. results showed a decrease step-down latency Cd-group, but reversed impairment memory induced intoxication. Rats exposed to...
This study investigated the cadmium (Cd) intoxication on cognitive, motor and anxiety performance of rats subjected to long-term exposure diet with Cd salt or from contaminated potato tubers. Potato plantlets were micropropagated in MS medium transplanted plastic trays containing sand. Tubers collected, planted sand boxes cultivated 0 10 μM and, after oven-dried, powder processed used for diet. Rats divided into six groups fed different diets 5 months: control, potato, potato+Cd, 1, 25 mg/kg...
A microwave-induced combustion (MIC) procedure was applied for coal digestion subsequent determination of As, Cd and Pb by inductively coupled plasma mass spectrometry (ICP-MS) Hg using cold vapor (CV) generation to ICP-MS. Pellets (500 mg) were combusted 20 bar oxygen ammonium nitrate as aid ignition. The use nitric acid absorbing solution (1.7, 3.5, 5.0, 7.0 14 mol L(-1)) evaluated. For samples with higher ash content, better results found L(-1) HNO(3) an additional reflux step 5 min after...