A5068784972- Analytical chemistry methods development
- Heavy metals in environment
- Mass Spectrometry Techniques and Applications
- Electrochemical Analysis and Applications
- Heavy Metals in Plants
- Mercury impact and mitigation studies
- Ion-surface interactions and analysis
- Heavy Metal Exposure and Toxicity
- Laser-induced spectroscopy and plasma
- Arsenic contamination and mitigation
- Radioactive element chemistry and processing
- Analytical Chemistry and Sensors
- Isotope Analysis in Ecology
- Geochemistry and Geologic Mapping
- Spectroscopy and Chemometric Analyses
- Extraction and Separation Processes
- Catalytic Processes in Materials Science
- Water Quality Monitoring and Analysis
- Advanced Chemical Sensor Technologies
- Catalysis and Oxidation Reactions
- Coal and Its By-products
- Geochemistry and Elemental Analysis
- Contact Dermatitis and Allergies
- Mesoporous Materials and Catalysis
- Catalytic Cross-Coupling Reactions
Universidade Federal do Rio Grande do Sul
2013-2022
Universidade Federal de Santa Catarina
1998-2021
Universidade Federal de Santa Maria
2008-2020
University of Rio Grande and Rio Grande Community College
2014
Universidade Federal do Rio Grande
2011
Fundação de Ciência e Tecnologia
2000
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.
A novel solution-based calibration method for quantitative spatial resolved distribution analysis (imaging) of elements in thin biological tissue sections by LA-ICP-MS (laser ablation inductively coupled plasma mass spectrometry) is described. dual flow the carrier and nebulizer gas used to transport aerosol laser ablated solid sample (brain tissue) that nebulized aqueous standard into (ICP) source, respectively. Both aerosols are introduced separately injector tube inside a special ICP...
Inorganic arsenic (iAs) is very toxic. iAs in rice was determined using selective hydride generation conditions and atomic absorption spectrometry.
A procedure for the determination of Cu, Cd, Pb, Bi and SeIV in sea-water by electrothermal vaporization inductively coupled plasma mass spectrometry, after on-line separation using a flow injection system, is proposed. Matrix analyte preconcentration was accomplished retention analytes complexed with ammonium salt O,O-diethyldithiophosphoric acid on C18 immobilized silica minicolumn directly to autosampler arm vaporizer. The methanol used as eluent vaporized being automatically injected...
Major, minor and trace elements in wines from wine-producing countries South America (Argentina, Brazil, Chile, Uruguay) were determined. Inductively coupled plasma optical emission spectrometry (ICP OES) inductively mass (ICP-MS) combined with pneumatic and/or ultrasonic nebulization used. The concentrations of 45 (Al, Ag, As, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cu, Dy, Er, Eu, Fe, Gd, Ho, K, La, Li, Lu, Mg, Mn, Mo, Na, Nd, Ni, P, Pb, Pr, Rb, Sb, Sn, Se, Sm, Sr, Tb, Ti, Tl, Tm, U, V, Yb, Zn) 53...
Toxic and nutrient elements were investigated in yerba mate (Ilex paraguariensis) from South America. Fifty-four brands of commercialised Argentina, Brazil, Paraguay Uruguay analysed for Al, Ba, Ca, Cu, Fe, K, Mg, Mn, P, Sr, Zn, using inductively coupled plasma optical emission spectrometry (ICP-OES), Li, Be, Ti, V, Cr, Ni, Co, As, Se, Rb, Mo, Ag, Cd, Sb, La, Ce, Pb, Bi U mass (ICP-MS). Antimony, Ag not detected any sample whereas the limits detection (LODs) these 0.19, 0.40, 0.003 0.001 μg...
A method has been investigated for the determination of Cd, Hg, Pb and Tl in coal fly ash, using slurry sampling electrothermal vaporization inductively coupled plasma mass spectrometry isotope dilution. The slurry, 25 mg ml−1, was prepared by mixing powdered sample (≤36–45 µm) with acid solutions (nitric nitric hydrofluoric acids ash) submitting mixture to an ultrasonic agitation, letting it stand afterwards a water bath at 60 °C 2 h. An probe used homogenize autosampler cup just before its...
A methodology based on multivariate analysis of the NIR reflectance spectra was developed for yerba mate classification. All brands analyzed were correctly classified according to country origin.