A5016973935- Analytical chemistry methods development
- Radioactive element chemistry and processing
- Heavy Metals in Plants
- Extraction and Separation Processes
- Biodiesel Production and Applications
- Heavy metals in environment
- Youth, Drugs, and Violence
- Insect and Pesticide Research
- Gas Sensing Nanomaterials and Sensors
- Isotope Analysis in Ecology
- Dye analysis and toxicity
- Material Properties and Processing
- Textile materials and evaluations
- Pesticide Residue Analysis and Safety
- Advanced Chemical Sensor Technologies
- Graphite, nuclear technology, radiation studies
- Coal and Its By-products
- Health, Nursing, Elderly Care
- Nanocomposite Films for Food Packaging
- Analytical Chemistry and Chromatography
- Bee Products Chemical Analysis
- Psychology and Mental Health
- Mass Spectrometry Techniques and Applications
- Minerals Flotation and Separation Techniques
Universidade Federal do Rio Grande do Sul
2017-2022
Universidade Federal de Santa Maria
2015-2017
Sample preparation methods for cereal digestion were evaluated the first time subsequent As, Cd, Hg, and Pb determination by atomic absorption spectroscopy techniques. Microwave-assisted (MW-AD) under high medium pressure microwave-induced combustion (MIC) evaluated. The use of MIC made it possible to digest 700 mg samples, agreements 97, 96, 100 92% obtained Hg Pb, respectively, when 7 mol L−1 HNO3 was used as absorbing solution. It not necessary dilute digests avoid interferences in...
A sample preparation method using only H2O2 in the single reaction chamber system (SRC-UltraWave™) was proposed for carbohydrate-rich foods (CRFs) digestion and further elemental determination by inductively coupled plasma (ICP) based techniques. The greenness of evaluated on Analytical Eco-Scale. Additionally, efficiency, obtained under different conditions (temperature volume H2O2), concentration residual carbon (RC). Determination RC major elements (Ca, Fe, Mg Na) were carried out optical...
Biopolymers are alternative materials used in the production of edible and/or biodegradable films. A very important restriction factor concerning films is their sensitivity to environmental conditions, such as temperature and relative humidity. The based on gelatin polyvinyl alcohol blends can be an solution order reduce Thus, aim this work was apply microwave transmittance technique measure qualitative effects presence glycerol moisture content gelatin-based results show that with glycerol,...
A sample preparation method for further determination of halogens in honey using hydrogen peroxide an alkaline medium a high pressure system.
Microwave coupled to ultraviolet radiation is proposed for the first time produced water digestion allowing metal determination by ICP-OES.
A microwave-assisted ultraviolet digestion (MW-UV) method for biodiesel is proposed subsequent determination of Ba, Co, Cr, Cu, Mn, Ni, Pb, Sr, and V by sector field inductively coupled plasma mass spectrometry (SF-ICP-MS).
Microwave-induced combustion was evaluated for the digestion of high purity nuclear flexible graphite further determination potentially embrittling elements (Ag, As, Bi, Cd, Ga, Hg, In, Pb, Sb, Sn and Zn) using atomic spectrometric techniques. Flexible is obtained by exfoliation process conventional oxidant agents subsequent fast heating at temperatures. Thus, chemical inertness specific purposes attained which causes also to methods. Microwave-assisted method maximum temperature pressure...
Digestion of petroleum coke is proposed for the first time by MW-AD and MIC La Ce determination DSN-ICP-OES.
The increasing demand for the elemental determination of petrochemical samples by inductively coupled plasma techniques requires development suitable sample preparation methods that permit high throughput and are in accordance with green chemistry recommendations. For this aim, microwave-induced combustion (MIC) method has been attempted to completely digest petroleum coke address quantitative elements, such as Ag, Al, Ba, Ca, Cd, Co, Cu, Fe, Mg, Mn, Mo, Na, Ni, Pb, Sr, V Zn, optical...